Recherche par propriété

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Recherche par propriété

Une liste de toutes les pages qui ont la propriété « Step Content » avec la valeur « To insulate the foam at best, you need to roll it using survival blankets. So as to do that, use adhesive tape to attach the blankets on both sides of the foam. "NB: It is better to use the aluminium side on top so as to reflect the body's heat." ». Puisqu’il n’y a que quelques résultats, les valeurs proches sont également affichées.

Affichage de 63 résultats à partir du n°1.

Voir (200 précédentes | 200 suivantes) (20 | 50 | 100 | 250 | 500).


    

Liste de résultats

    • Insulated mattress  + (To insulate the foam at best, you need to roll it using survival blankets. So as to do that, use adhesive tape to attach the blankets on both sides of the foam. "NB: It is better to use the aluminium side on top so as to reflect the body's heat.")
    • Moteur Stirling  + (<nowiki>On list ici quelques vidéos On list ici quelques vidéos d moteurs stirling "diy" (do it yourself)

      plus ou moins bricolés et en langue français.

      On voit qca va du moteur fait avec 1 canett dcoca cola (DDM Brico Voyageur https://www.youtube.com/watch?v=nBxKOkYx2rI) à 1 moteur en bois

      avec des seringues en verres pour les pistons(Incroyables Experiences https://www.youtube.com/watch?v=s79odgWz6BM), à 1 moteur 125 cm3 usiné avec une puissance estimée d 0,8kW à 8kW,soit 0,6ch à 6ch, au regard d la mesure d 800tr/min et d'un poids du plateau estimé entre 100g et 1kg (French Stirling Fablab https://www.youtube.com/watch?v=Z24dZ3St_JE d la serie d'épisod https://www.youtube.com/playlist?list=PLE1TyIvCXNyjlvWRi10LUsEMXKyRS6Ltx sur la chaine https://www.youtube.com/@FrenchStirlingFablab).

      Vous y trouverez nettement plus d ressources pour essayer d fabriquer

      votr propr moteur stirling qdans l texte ci-dessous.

      En bonus, pour les enseignants, 1 exempl d jouet d typ tracteur et gru fabriqué en meccano ici :

      http://cm1cm2.ceyreste.free.fr/stirling.html
      lt;br /><br />http://cm1cm2.ceyreste.free.fr/stirling.html</nowiki>)
    • Moteur Stirling  + (<nowiki>On list ici quelques vidéos On list ici quelques vidéos d moteurs stirling "diy" (do it yourself)

      plus ou moins bricolés et en langue français.

      On voit qca va du moteur fait avec 1 canett dcoca cola (DDM Brico Voyageur https://www.youtube.com/watch?v=nBxKOkYx2rI) à 1 moteur en bois

      avec des seringues en verres pour les pistons(Incroyables Experiences https://www.youtube.com/watch?v=s79odgWz6BM), à 1 moteur 125 cm3 usiné avec une puissance estimée d 0,8kW à 8kW,soit 0,6ch à 6ch, au regard d la mesure d 800tr/min et d'un poids du plateau estimé entre 100g et 1kg (French Stirling Fablab https://www.youtube.com/watch?v=Z24dZ3St_JE d la serie d'épisod https://www.youtube.com/playlist?list=PLE1TyIvCXNyjlvWRi10LUsEMXKyRS6Ltx sur la chaine https://www.youtube.com/@FrenchStirlingFablab).

      Vous y trouverez nettement plus d ressources pour essayer d fabriquer

      votr propr moteur stirling qdans l texte ci-dessous.

      En bonus, pour les enseignants, 1 exempl d jouet d typ tracteur et gru fabriqué en meccano ici :

      http://cm1cm2.ceyreste.free.fr/stirling.html
      lt;br /><br />http://cm1cm2.ceyreste.free.fr/stirling.html</nowiki>)
    • Cuiseur multi-combustible  + (La structure porteuse (le fût) est encore La structure porteuse (le fût) est encore la même, la réserve à combustible change et une jupe se rajoute Vous aurez besoin d'un tuyau de poêle (15x65cm), d'un fût supplémentaire et d'une grille : cette dernière, positionnée au fond de la réserve, est soumise à des températures particulièrement élevée. Aussi, nous vous conseillons d'en acheter une prévue pour les barbecues (lien ci-dessous) Découpez le tuyau à l'identique de la photo ci-jointe : le fond de la réserve doit être à 5cm du fond du fût. La jupe  a une ouverture de 10x10cm pour enfourner le combustible et laisser sortir les gaz de combustion Concernant les bûchettes, nous privilégions une forme compacte plutôt que du petit bois pour minimiser les recharges. Prenez en compte que dans cette version, des braises tombent au fond du bidon, donc chauffent le sol ! au fond du bidon, donc chauffent le sol !)
    • Wind turbine  + ('''Wind turbine''' 1 - Preparing the moto'''Wind turbine''' 1 - Preparing the motor 2 - Motor axis 3 - Preparing the rotor blades 4 - Aileron and base for rotor blades 5 - Assembly '''Electric circuit''' 1 - Rectifiers 2 - Capacitors 3 - tension stabilizer 4 - Connecting the USB port Motor protection Connecting the USB port Motor protection)
    • Haybox or fireless cooker made of a wool blanket  + ( * Fold the blanket into thirds and check * Fold the blanket into thirds and check that this is enough to enclose your stewpot. * Cut the blanket into three squares of equal size * With the rest, cut two squares the width of the stewpot * Sew these two small pieces in top of each other at the centre of one of the larger squares to make a double base for the stewpot * Overlay the three large squares on top of each other * Sew them together by hand around the edges Sew them together by hand around the edges )
    • Spirulina-growing pond  + (For ergonomics, it is necessary to adjust For ergonomics, it is necessary to adjust the height of the basin to the worker's size. The basin is 30 centimeters high. In our case the bottom of the basin is one meter above the ground. When calculating the height of the legs, the thickness of the low and high frames must also be taken into account. * Make 4 legs with half-rafters, * Place the corner legs aligned with the corners of the bottom frame, * Install four central legs, of a single half-rafter, facing each stiffener of the low frame, * Place a bracket about 30 cm between each center leg and its bottom frame stiffener, four in total.its bottom frame stiffener, four in total.)
    • Pasteurisation of Fruit and Vegetables  + ( * Peel and wash the fruit and vegetables * Peel and wash the fruit and vegetables to be pasteurised thoroughly * Whether from a recipe of your choice (like ratatouille, compote, puréed fruit or veg, fruit in syrup etc...) or cut into pieces in water, place the fruit or veg in a saucepan over heat. * Heat until brought to a simmer over heat. * Heat until brought to a simmer )
    • Spirulina farming  + ( * Screw a white plastic cap at the end of a ruler or a plastic or wooden rod of about 20 centimeters, * Scale the stem from 0 to about ten centimeters, with the 0 at the level of the cap. )
    • Déodorant maison  + ( *'''Bicarbonate de sodium''' de qualité a *'''Bicarbonate de sodium''' de qualité alimentaire : Utilisé ici pour son action désodorisante, il peut-être utilisé pour une multitude d'emplois (produit d'entretien, désodorisant, anti brûlures d'estomac, blanchissement des dents...) . Fabriqué à partir de calcaire et de sel. Peut provoquer des irritations chez certaines personnes. Peut être remplacé dans de l'argile blanche dans ce cas. Compter ~3-4 euros/kg *'''Vinaigre de cidre ou vinaigre blanc''' : utilisés comme désodorisant. Possède la capacité de supprimer les odeurs existantes et de réduire la force des bactéries produisant les mauvaises odeurs. *'''Fécule de maïs''' ou l’'''arrow-root''' (= fécule de rhizome de la maranta) : sont deux absorbants naturels. Ils serviront également à lier le produit. *'''Huile de coco :''' Utilisé ici pour ses propriétés hydratantes et antibactériennes.
      À utiliser avec parcimonie!! Ce produit vient de loin (en France) et a donc une empreinte carbone importante. De plus, les noix de coco sont souvent récoltées par des singes, rendus captifs et maltraités. (Voir article en lien)
      * '''Huile essentielle de Tea Tree''' : utilisées pour ses propriétés antibactériennes et sa forte odeur pour retarder puis masquer les "mauvaises odeurs" de sudation. *'''Huile essentielle de Palmarosa''' : À favoriser pour ses propriétés antibactérienne et antifongique.
      A utiliser avec parcimonie ! La production d'huile essentielle demande énormément de ressources naturelles. De plus, elles ne conviennent pas à tous et peuvent être allergisantes. À tester avant utilisation, en faible quantité sur le poignet, puis attendre 2 jours. À proscrire pour les femmes enceintes et les enfants. N'hésitez pas à consulter ce guide: https://lestrappeus.es/huiles-essentielles-bebe-et-famille-friendly/
      *'''Cire d'abeille''' : Utilisé à la fois pour ses propriétés [https://fr.wikipedia.org/wiki/Hydrophobe hydrophobes] et antibactériennes, sa haute température de fusion (63°C) permet au déodorant de rester solide en toute circonstance.
      ophobe hydrophobes] et antibactériennes, sa haute température de fusion (63°C) permet au déodorant de rester solide en toute circonstance. )
    • Desodorante casero  + ( *'''Bicarbonato de sodio''' de calidad al *'''Bicarbonato de sodio''' de calidad alimentaria: Utilizado aquí por su acción desodorizante, puede utilizarse para multitud de usos (producto de limpieza, desodorante, antiardor, blanqueamiento dental...). Elaborado a base de piedra caliza y sal. Puede causar irritación en algunas personas. En este caso se puede sustituir por arcilla blanca. Cuente ~3-4 euros/kg *'''Vinagre de sidra o vinagre blanco''': se utiliza como desodorante. Tiene la capacidad de eliminar los olores existentes y reducir la fuerza de las bacterias productoras de olores. *'''Maicena''' o '''arrurruz''' (= almidón de rizoma de maranta): son dos absorbentes naturales. También se utilizarán para unir el producto. *'''Aceite de coco:'''' Se utiliza aquí por sus propiedades humectantes y antibacterianas.
      ¡Úsalo con moderación! Este producto viene de muy lejos (en Francia) y por tanto tiene una huella de carbono importante. Además, los monos suelen cosechar cocos, llevarlos cautivos y maltratarlos. (Ver artículo vinculado)
      * '''Aceite esencial de Árbol de Té''': utilizado por sus propiedades antibacterianas y su fuerte olor para retrasar y luego enmascarar los "malos olores" de la sudoración. *'''Aceite esencial de Palmarosa''': Favorecido por sus propiedades antibacterianas y antifúngicas.
      ¡Úselo con moderación! La producción de aceite esencial requiere muchos recursos naturales. Además, no son aptos para todo el mundo y pueden resultar alergénicos. Pruebe antes de usar, en una pequeña cantidad en la muñeca, luego espere 2 días. Evitar en mujeres embarazadas y niños. No dudes en consultar esta guía: https://lestrappeus.es/huiles-essentielles-bebe-et-famille-friendly/
      *'''Cera de abejas''': Utilizada tanto por sus propiedades hidrófobas [https://fr.wikipedia.org/wiki/Hydrophobe] como antibacterianas, su elevada temperatura de fusión (63°C) permite que el desodorante permanezca sólido en todas partes. circunstancias.
      como antibacterianas, su elevada temperatura de fusión (63°C) permite que el desodorante permanezca sólido en todas partes. circunstancias. )
    • Thermal curtain - prototype 2  + ( *Clean the remaining milk cartons thoroughly. *Flatten the bricks so that there are no creases. *Cut the brick as shown in the photo. *Remove the outer layer of the brick so that a little cardboard remains (be careful not to tear the brick). )
    • Homemade deodorant  + ( *Food-grade '''sodium bicarbonate''' : Us *Food-grade '''sodium bicarbonate''' : Used here for its deodorising action, it can be used for a multitude of purposes (cleaning product, deodoriser, heartburn remover, teeth whitener, etc.). Made from limestone and salt. May cause irritation in some people. Can be replaced with white clay in this case. Cost ~3-4 euros/kg *'''Cider vinegar or white vinegar''' : used as a deodorant. Has the ability to remove existing odours and reduce the strength of odour-producing bacteria. *'''Corn starch''' or '''arrow-root''' (= maranta rhizome starch): these are two natural absorbents. They are also used to bind the product. *'''Coconut oil:''' Used here for its moisturising and antibacterial properties.
      Use with parsimony! This product comes from far away (France) and therefore has a significant carbon footprint. What's more, coconuts are often harvested by monkeys, who are then held captive and mistreated. (See linked article)
      * '''Tea Tree essential oil''': used for its antibacterial properties and strong odour to delay and then mask the "bad smells" of perspiration. *'''Palmarosa essential oil''': Recommended for its antibacterial and antifungal properties.
      Use sparingly! The production of essential oils requires an enormous amount of natural resources. What's more, they are not suitable for everyone and can be allergenic. Test a small amount on the wrist before use, then wait 2 days. Not recommended for pregnant women or children. Don't hesitate to consult this guide: https://lestrappeus.es/huiles-essentielles-bebe-et-famille-friendly/
      *'''Beeswax''': Used for both its hydrophobic [https://fr.wikipedia.org/wiki/Hydrophobe] and antibacterial properties, its high melting point (63°C) means that the deodorant remains solid in all circumstances.
      g/wiki/Hydrophobe] and antibacterial properties, its high melting point (63°C) means that the deodorant remains solid in all circumstances. )
    • Multifunctional Crankset  + ( *Salvage the hub of the front wheel (whic *Salvage the hub of the front wheel (which is not used) and remove all spokes. *Attach a pulley on either side of the hub. Transmission pulley 1 will be driven by a belt connected to the bike wheel, and transmission pulley 2 will power the desired tool with a second belt. *Secure the hub on a block of wood with the eye straps. This block of wood will later be attached to the table. f wood will later be attached to the table. )
    • Brick wallet  + (- Rinse the inside thoroughly with water - Dry the brick with a cloth - Dry the inside of the brick)
    • Autonomous solar watermaker  + (1 Solar concentrator 1.1 Frame 1.2 M1 Solar concentrator 1.1 Frame 1.2 Main reflector 1.2.1 Support for main reflector 1.2.2 Mirrors 1.3 Secondary reflector 1.3.1 Support for secondary reflector 1.3.2 Secondary reflector and copper pipe 2 Watermaker 2.1 Evaporation tank 2.1.1 Frame 2.1.2 Stages 2.1.3 Copper pipe 2.2 Condensation tank 2.2.1 Frame 2.2.2 Copper pipes 2.2.2.1 Copper condensing coil 2.2.2.2 Copper water inlet pipe 2.2.2.3 Copper water outlet pipe 2.2.3 Cover 3 Total circuit 3.1 Circuit closing pipes4 3.2 Pump 3.1 Circuit closing pipes4 3.2 Pump)
    • Oyas  + (<br/><div class="icon-instruction
      You can dispense with this step by choosing a smaller pot for the upper part of the oya
      Goal: that the upper parts of the pots fit together well enough two by two to then allow a solid, watertight seal. Even when manufactured industrially, clay pots are not always perfectly round, and their dimensions can vary. If the 2 pots do not fit together sufficiently: #look for a better fit by turning the top one on its axis #plane the rim of the pot using a wood file, a sander or an angle grinder Once fitted, mark the chosen position.
      im of the pot using a wood file, a sander or an angle grinder Once fitted, mark the chosen position. <br/>)
    • Domestic biodigestor  + (The entry of the system will be the biodigThe entry of the system will be the biodigestor mouth. The installation will first be done to verify dimensions of the system, and then will be dissasembled and definitively glued. * Put a PVC pipe in one of the digestor openings, without putting it too much inside (this would reduce matter circulation). * Create a 90° angle using two 45° bends. On small diameter tubes, it is better to have smooth angles, as a direct 90° angle would get stuck more easily. * Build the "mouth" with large diameter pipes. The larger the mouth is, the easier it will be to feed the digestor. A first fermentation process happens in the mouth. An unscrewable lid closes the mouth. * Link the mouth to the digestor, placing it higher than the digestor, so that matter can circulate in the system with gravity. can circulate in the system with gravity.)
    • Solar water heater  + (Refrigerators are numerous in waste collecRefrigerators are numerous in waste collection centres, it is necessary to identify those which have the adequate grids (see Preface - Grid) and of the largest possible dimension. Pinching the pipes at the outlet of the compressor will limit the exhaust of refrigerant gases. Cut the pipes as close as possible to the compressor to ensure maximum length with the grid. Unscrew the grid. Wash the grid with soapy water. Blow a blower into the pipes to remove impurities. Seal the pipes with tape to prevent impurities from getting into them, as they may have a small diameter and become obstructed.ve a small diameter and become obstructed.)
    • Pare-soleil pour fenêtres, velux, baies vitrées...  + (Cette étape n'est pas détaillée car elle eCette étape n'est pas détaillée car elle est simple si on sait coudre, ce qui est un prérequis. Pour qu'elles puissent être accrochées, les voiles devront avoir des boutonnières ou de petits élastiques : - pour les fenêtres battantes et les velux, de petits élastiques sont la solution la plus pratique, mais des boutonnières pourraient convenir - pour les baies vitrées, il faut impérativement des boutonnièress, il faut impérativement des boutonnières)
    • Pare soleil climatiseur  + (Etendre la couverture de survie sur une surface plane, face argentée vers le bas. Reporter les mesures au marqueur, et tracer les lignes à l'aide de la règle.)
    • Face mask for coronavirus - Quick version  + (Cut out 1 or 2 or 3 rectangles (depending Cut out 1 or 2 or 3 rectangles (depending on the fabric combination chosen) measuring 20x28 cm. Layer them inside out. Stop the edge threads with the serger, or if you don't have one, with a simple sewing machine, using the zig-zag stitch. Depending on fabric elasticity, adapt zig-zag stitch sizes. First test it on a scrap of fabric.sizes. First test it on a scrap of fabric.)
    • Made-to-measure mosquito net  + (First of all, you need to '''measure the sFirst of all, you need to '''measure the size of your window'''. You need to measure the '''empty space''', i.e. the '''smallest opening''', where you can put your hand. To do this, use a tape measure to measure the '''height/length''' and '''width''' of the window, as shown in the diagram.
      Measuring your window is the essential step in the tutorial, without it you won't be able to make a mosquito net

      the tutorial, without it you won't be able to make a mosquito net</div> </div><br/>)
    • Thrifty and stand-alone water point  + (Gather 3 transversal battens from the wooden box (1 short / 2 long) et use them to make a T-shaped lever (around 25cm - 10 inch long). Attach those 3 pieces with some glue.)
    • Warmer  + (Here are the quantities for one warmer ! THere are the quantities for one warmer ! The mass of vinegar depends on its concentration.
      ===Quantity for one warmer=== 35g baking soda
      Concentration of vinegar [%] [g Mass of vinegar [g] Approximate volume of vinegar [mL
      6 415 415
      8 315 315
      10 250 250
      12 210 210
      14 180 180
      16 155 155
      These values are approximate. You can find out how to calculate them in the theoretical sections.
      NB: The density of vinegar is very close to that of water, 1kg for 1L.
      ;</tr><tr> <td>14 </td><td>180 </td><td>180 </td></tr><tr> <td>16 </td><td>155 </td><td>155 </td></tr></table> These values are approximate. You can find out how to calculate them in the theoretical sections. </div> NB: The density of vinegar is very close to that of water, 1kg for 1L.)
    • Serre à structure PVC  + ( * Placer la bâche sur la structure sans l * Placer la bâche sur la structure sans l’abîmer. * Vérifier que la bâche est assez longue pour tapisser toute la tranchée * Reboucher la tranchée avec la terre d'origine pour fixer et tendre la bâche (le poids de terre doit être suffisant pour maintenir l'ensemble de la bâche. * Faire cette opération lorsque le soleil tape et qu'il fait chaud (la bâche sera plus souple et lorsque il fera plus froid la bâche se tendra. * Rabattre la bâche aux extrémités pour la fixer (pincée) aux chevrons en bois avec une lattes et des vis à bois. * Reboucher également les tranchées situées aux extrémités. ement les tranchées situées aux extrémités. )
    • Black Soldier Fly breeding  + (The breeding environment can be made with The breeding environment can be made with various materials. For the prototype of the boat for example, we built a wooden box in which we put a plastic bin containing the waste and larvae (See photo). For example, you can use a plastic drum cut on top, or a simple plastic box. '''For the construction:''' '''1. Preparation of the boards''' *Using an electric or hand saw, cut the 6 boards to the right lengths *Sand the boards *Apply an undercoat on all sides of the boards and allow to dry *Apply a coat of wood paint and let it dry *Apply a coat of varnish (optional) and let it dry '''2. Assembly of the box''' *Using the angles and screws, assemble the boards on the bottom of the box *Using angles and screws, connect the different sides of the box *Cut out cleats to strengthen the inside of the box and attach the lid to it. *Using screws, fix the cleats on the upper part of the walls *Prepare the cover by installing hinges. *Install the cover on the box and fix the hinges '''3. Preparation of the waste box''' If the sides of your waste bin are not very high, it may be useful to put an additional barrier against larvae escape *Pass an old used inner tube all around your tray and leave a part coming out towards the inside *Staple the inner tube to the tray *Place the tray at the bottom of the box and stick it against one side '''4. Preparation of the slope''' *Cut the board in the shape of a trapezoid so that it forms a ramp when placed on the waste and joins the edge of the box at an angle of less than 45 degrees *Cut cleats to fit the external shapes of the ramp *Secure them with screws on the ramp '''5. Installation of the ramp ''' To facilitate maintenance, we put the ramp on a hinge to be able to lift it up and easily remove the bin from the waste *Install a hinge on the lower part of the ramp *Attach the hinge to the box '''6. Cutting of the holes on the box''' In order to allow the entry of flies and the exit of larvae, holes must be drilled on the sides of the box. For larvaes: *Measure the location where the ramp arrives and count 2cm high for the opening *Using a drill, make holes at the 4 ends of your opening *Using a saw, connect these holes to create an opening For the flies *On the sides of the box, drill with a hole saw about ten openings of 5cm in diameter '''7. Placing of the larvae collection box''' *Using screws, fix the plastic box under the larvae exit slot
      Make sure that the ramp is firmly fixed against the wall so that the larvae cannot fall back into the tank. If necessary, staple a bracket from the ramp to the collection box
      '''8. Laying supports (if no separate aviary)''' *Cut out pieces of cardboard boxes that are 10cm by 5cm thick. *Assemble 4 pieces with string *Attach two screws to the cleats at both ends of the box *Hang a string on these screws *Hang the egg-laying supports on the string so that they are as close as possible to the waste '''The general recommendations for the design of the living environment are :''' - Size your waste bin according to your weekly volume. Indeed, it is not necessary to have a too thick layer of substrate so it is better to be able to spread out your waste rather than stack it. - Drill holes so that female flies can come and lay eggs inside. - Place the egg-laying supports above the waste, as close as possible. These can be made of honeycomb cardboard or wooden planks separated by a pin (a gap must be left in which the flies will lay their eggs). During hatching, the larvae will fall directly into the waste. - Have a well sealed waste box to prevent larvae from escaping in case of lack of food. - Put a ramp for the exit of the larvae. It can be inclined up to 45 degrees but prefer a softer slope. As larvae tend to follow the edges of the box to find the exit, it may be good if the ramp is the full width of the box. - Avoid the ventilation holes on top to protect the substrate as much as possible from rain.
      Do not bring water into contact with eggs, they would burst!
      On the pictures, you can see the plans of the system we had validated and that works on the boat. The fly inlet/outlet holes on the top have been plugged and the aviary attached to the cover has been changed to a separate aviary, see below.
      works on the boat. The fly inlet/outlet holes on the top have been plugged and the aviary attached to the cover has been changed to a separate aviary, see below.)
    • Orangepi-raspberry pi nextcloud server (photovoltaics powered)  + (The links to the photovoltaics material arThe links to the photovoltaics material are in the autonomie.ods file (readable with libreoffice) attached to this tutorial. - raspberry pi : 42€ on leboncoin -Orange pi : single board computer: Orange pi 5 single board computer with 4,8,16 or 32 Go of ram 2,4Ghz ARM Cortex-A55 CPU This card is compatible with nvme pcie 2.0 hard drives (2242 or 2230, pcie is retrocompatible ie 3.0, 4.0 and 5.0 work with lower speed on orange pi 5) Same principle as here but a bit more powerful and we can plug a hard drive (useful for nextcloud which is made to host files) and it starts automatically on a usb stick Price: 143€ brand new on aliexpress in version 16 Go on the 2nd of august 2023 Second hand on leboncoin: we find more easily raspberry pi at around 100€. It is necessary to buy a small box at 10€ (or make one) to avoid a naked single board computer -hard drive Here we use a kingston usb stick of 32Go and a nvme samsung 512Go card We can plug a hard drive of higher capacity in usb, or a nvme card (nvme pcie 2.0 ssd 2242 or 2230) compatible with pcie 3.0 4.0 and above but the speed is reduced A nvme samsung 2242 card of 500Go is about 50€ on the 2nd of august 2023. -usb stick : 10€ - rj45 cable: 5€ -Internet box or 4G modem according to your internet connection -solar pannel: here we use a flexible 120W pannel bougth 115€ brand new but we can find second hand ones at 30€ on leboncoin for an equivalente peak power. Note: for the theoretical need. See file autonomy.ods -second hand battery: use the previous lead acid battery of your car when it crashes when it's too hot in summer! -12V/24V-usb 5V battery converter: 20€ avoid amazon if you can - pwm regulator 30A: 30€ brand new if you dont buy corporate brand - DRL (day/night switch 13V): 1,5€ brand new (key word "Kit de feux de jour à LED pour voiture, contrôleur marche/arrêt automatique DRL" in french) -electric mc4 cable: 20€ Total second hand price for orangepi: 256,50€ Total brand new price for orangepi: 431,50€ Total second hand price for raspberry: 165€ See autonomie.ods - for raspberry: 165€ See autonomie.ods -)
    • Hydroponics  + (In order to gain in autonomy, it is possibIn order to gain in autonomy, it is possible to install a timer system thanks to a programmable electrical socket or an arduino allowing to program the starting of the pump and the bubbler. * Indeed, for a better development of the plants, it is advisable to proceed to a regular watering alternated with dry breaks. This water stress will strengthen the roots. For this purpose, we recommend that the pump be switched on for 30 minutes every 2 hours during the day. No watering at night. * The biofilter needs to be aerated regularly for good growth and survival of bacteria. '''We recommend lighting the bubbler for 1 minute every 5 minutes, 24 hours a day.''' '''Arduino control system: ''' [[Gestion énergétique d'un système d'hydroponie/fr]]
      [[Gestion énergétique d'un système d'hydroponie/fr]] <br/>)
    • Biodiesel  + (Before it can be converted, the used oil mBefore it can be converted, the used oil must be filtered first in order to remove any possible food residues (fries, doughnuts...). We recommend you let the oil settle for a few days. An initial filtration must be carried out to get rid of the biggest particles (e.g.: with a double cotton sheet or a sock...). Then pour the oil into a 5µm maximum filter bag (the finer the better) above the clean canister, prepared beforehand.e the clean canister, prepared beforehand.)
    • Apple juice extractor  + (This first stage is common to both machines. The first step is to break up the pallets to recover the wooden planks. You also need to collect screws and bolts. That's our only expense.)
    • Solar water heater  + (The creation of the chamber is very easy :The creation of the chamber is very easy : cut the bottom of the bottle in a way that you could slot them together (picture). The more complicated step is to slot at the base of your pile two bottle in the opposite direction, in a way that the edge of the chamber are neck. /!\ Wait before sealing with the adhesive tape !it before sealing with the adhesive tape !)
    • Solar lamp with reused lithium cells  + (This tutorial shows how to recover computeThis tutorial shows how to recover computer cells to make a new battery. Powered by a solar panel, or by a USB port, it will allow you to light an LED lamp. The system works around three modules: * the energy reception module: the solar panel and its charge controller * the energy storage module: the battery * the module that gives back the energy: the LED lamp and its voltage regulator '''Energy Receiving Module: Photovoltaic Panel & Charge Controller''' The photovoltaic panel concentrates the energy of the sun. It allows to recover its energy in order to store it in the battery. But be careful, the amount of energy received by the panel is irregular depending on the time of day, the weather... it is important to install a charge/discharge regulator between the panel and the battery. This will be protected against overload, among other things. '''Energy storage module: the battery''' It is composed of two lithium cells recovered from a computer. To put it in a nutshell, a battery is a bit like a box containing several batteries: each of them is a cell, a unit that supplies power to the device by electrochemical reaction. The cells found in computers are lithium cells. They all have the same capacity to store energy, but their ability to make it is different for each. To form a battery from cells it is important that they all have the same ability to deliver energy. It is therefore necessary to measure the capacity of each cell to compose homogeneous batteries. '''Module that renders the energy: the LED lamp, the 5V USB port and its voltage converter''' Our battery supplies us with 3.7V power and the LED lamps we used operate at the same voltage. In addition, the USB ports provide a voltage of 5V. We therefore need to transform the cell energy from 3.7V to 5V: using a voltage converter called DC/DC booster3.7V to 5V: using a voltage converter called DC/DC booster)
    • Batteries recovery  + (This tutorial shows how to recover the batThis tutorial shows how to recover the battery cells from a computer in order to create a new battery. Powered by a solar panel or by a USB port, it will allow you to light a LED lamp. The system works around three modules: * the energy reception module: the solar panel and its charge controller * the energy storage module: the battery * the module that gives back the energy: the LED lamp and its voltage regulator '''Energy Receiving Module: Photovoltaic Panel & Charge Controller''' The photovoltaic panel concentrates the energy of the sun. It allows to recover its energy in order to store it in the battery. But be careful, the amount of energy received by the panel is irregular depending on the time of day, the weather... It is important to install a charge/discharge regulator between the panel and the battery to protect it against overload, among other things. '''Energy storage module: the battery''' It is made of two lithium cells recovered from a computer. To put it in a nutshell, a battery is a bit like a box containing several batteries: each of them is a cell, a unit that supplies power to the device by electrochemical reaction. The cells found in computers are lithium cells. They all have the same capacity to store energy, but their capacity to deliver it is different for each. To make a battery from cells it is important that they all have the same capacity to deliver energy. It is therefore necessary to measure the capacity of each cell to compose homogeneous batteries. '''The module that gives back the energy: the LED lamp and its voltage regulator''' Our batterie delivers a 3.7V current and our LED lamps work with 12V. So we need to transform the cell's energy from 3.7V to 12V : thanks to the voltage regulator called DC/DC booster. A small screw on this module allows to regulate voltage. You can set it to 12V - or another voltage according to your LED's characteristics.r another voltage according to your LED's characteristics.)
    • Bait for Melipona bees  + (To make a big amount of mixture • Mix 100ml of 90° alcohol and 300g of Bee propolis in the first bottle. • Leave to macerate in the shade for 7 days.)
    • Parabolic solar cooker  + (Use a rolling table, with a rectangular sheet that needs to be fixed with a drill and screws on the stand to place the tube that will support the parabolic dish later.)
    • Tawashi  + (Use your pencil and ruler to draw a square 12cmx12cm. Put 20 nails every 2 cm. With your hammer, firmly plant the nails into the board onto each of the 20 dots.)
    • Electrically-assisted bicycle  + (Video source : <u>https://www.youtubVideo source : https://www.youtube.com/watch?v=nikYUAnj7F0 Dismantling the hoverboard will depend on the brand and type of hoverboard. The instructions and images that follow are general but there may be details that vary. First of all, you need to remove the plastic shell that encloses all the electronic components. '''Note:''' Be careful with any wires connected to the plastic shells, such as the charging wire. See image 1 a basic diagram of the inside of a hoverboard. Unplug the cables and mark where they are connected, using marked tape if possible. In particular, keep the charging cable to one side and mark where it is connected on the motherboard. Carefully remove the battery after disconnecting it from the motherboard and removing the wires from the central cylindrical area. Keep the battery (1) (see image 3) as it will be used to power the bike's electric assistance motor. '''Caution! ''' The battery is the most dangerous electronic component of the hoverboard. Any risk of impact, particularly with sharp objects, must be avoided. If the battery is damaged (tears, holes, etc.) or appears swollen, it must not be used, as there is a risk of explosion or flame. The motherboard is an important element to keep to enable the battery to be recharged. You need to locate the "Charging socket" (2) on the charging cable you put aside earlier. Next, remove the "Sensor" boards (see image 2) to gain access to the motor mountings. At least one of the blocks of 4 screws needs to be unscrewed with an Allen key to obtain the motorised wheel that will drive the bicycle wheel (see image 4). It is possible to keep the fixing system to make it easier to attach the wheel to the bike.e fixing system to make it easier to attach the wheel to the bike.)
    • Stirling Engine  + (W hereby list a few videos of diy stirlingW hereby list a few videos of diy stirling engine mor or less diy and in french languag W can find engin mad with a coca cola can (DDM Brico Voyageur https://www.youtube.com/watch?v=nBxKOkYx2rI), wooden engine made with glass syringes for the pistons (Incroyables Experiences https://www.youtube.com/watch?v=s79odgWz6BM) , a 125 cm3 manufactured engine with an estimated power of 0,8kW to 8kW (0,6 horsepower to 6 horsepower) considered the measurement of 800 rpm and a tray mass estimated between 100g and 1kg (French Stirling Fablab https://www.youtube.com/watch?v=Z24dZ3St_JE from series https://www.youtube.com/playlist?list=PLE1TyIvCXNyjlvWRi10LUsEMXKyRS6Ltx on channel https://www.youtube.com/@FrenchStirlingFablab) You can find notably resources to try to build your own stirling engin that you won't find in th text below As a bonus, for teachers, 1 example of a tractor and cran toys build in meccano here: http://cm1cm2.ceyreste.free.fr/stirling.htmle: http://cm1cm2.ceyreste.free.fr/stirling.html)
    • Solar Oven (box-type oven)  + (1) Take the [[:Fichier:Plans cuiseur solaire.jpg|plans de la boîte]] 1) Take the [[:Fichier:Plans cuiseur solaire.jpg|plans de la boîte]] , the plywood panels and the tape measure 2) Copy the dimensions of the side A on one of the panels with a ruler. 3) Use the protractor to create an angle of 60° and another one of 30° as shown on the schema. 4) Fix the panel on the working table with the clamp. 5) Protect the ears and the eyes 6) Cut following the drawings with the jigsaw. 7) Copy the dimensions of the schema on the second panel to realize the side B. 8) Cut the second panel 9) Draw, cut the panels C, D and E '''Comment''': if at the cutting of the panels, the borders of the plywood panel contains thorns, it can be useful to sand the borders with sandpaper. The panels being voluntary thin, it is necessary to fix on the panels A and B the sticks that will be used as support to screw the panels C, D and E. The sticks will be, in ideal, of the same thickness of the isolator. Cut the sticks 1) Take the sticks and draw the desired dimensions 2) Fix the sticks on the clamping and cut with a saw. Fix the stick to the panels 3) Position one of the stick and use the clamp to maintain the whole 4) Return the panel and screw with a screw (two screws per stick is enough). '''Comment''': Keep in mind to keep the thickness of a panel between the end of the panel and the stick (it is at this place that the panels C, D and E will come). 1) Screw the panels C, D and E on the sticks, 3 screws are enough. We obtain so the inside of the box. The isolator will be added and then the inside box will be covered with reflectings. '''Comment''': To screw, it is sometime judicious to pre-screw with a drill or a broach.ous to pre-screw with a drill or a broach.)
    • Fermented foods - alternatives to animal proteins  + (You don't have to work in a sterile field You don't have to work in a sterile field when it comes to fermentation, but it is crucial to be as clean as possible. Work on a clean work surface (if necessary/possible sanitised with white vinegar or alcohol). Use clean utensils and containers, washed in hot water (or put in the dishwasher), handle with clean hands and wipe with a CLEAN tea towel... of course. wipe with a CLEAN tea towel... of course.)
    • Domestic mealworm farming  + ('' 'Beginning of breeding' '' Upon receip'' 'Beginning of breeding' '' Upon receipt of the mealworms, they can be placed in a plastic container with the flour and carrots. '''Food''' Insects are used to a dry environment, their food should be checked weekly. If you want to consume the insects, you will have to give them human food (no peeling). Worms eat flour and vegetables (they are crazy about carrots). '' 'The Mealworm Cycle' '' The worm will mutate into an adult, the adults will lay eggs, and the cycle begins again! Before its transformation, the worm stores as much protein as possible. '' 'Appearance of adults' '' Once the first adults are present, keep in mind that there will be small eggs in the tray with adults. It is necessary to have 3 bins: - 1 tray containing nymphs, adults, adult eggs and cardboard - 1 tray containing the larvae, adults can stay a maximum of 1 week in this tray (to avoid having eggs in this tray) - 1 empty bin for transfers maintenance The maintenance of the bins is carried out with each sorting of insects. The flour trays can be changed every month. The flour in the adult container should be stored for 4 weeks, in order to collect the larvae from the eggs.order to collect the larvae from the eggs.)
    • Déodorant maison  + ( *'''Bicarbonate de sodium''' de qualité a *'''Bicarbonate de sodium''' de qualité alimentaire : Utilisé ici pour son action désodorisante, il peut-être utilisé pour une multitude d'emplois (produit d'entretien, désodorisant, anti brûlures d'estomac, blanchissement des dents...) . Fabriqué à partir de calcaire et de sel. Peut provoquer des irritations chez certaines personnes. Peut être remplacé dans de l'argile blanche dans ce cas. Compter ~3-4 euros/kg *'''Vinaigre de cidre ou vinaigre blanc''' : utilisés comme désodorisant. Possède la capacité de supprimer les odeurs existantes et de réduire la force des bactéries produisant les mauvaises odeurs. *'''Fécule de maïs''' ou l’'''arrow-root''' (= fécule de rhizome de la maranta) : sont deux absorbants naturels. Ils serviront également à lier le produit. *'''Huile de coco :''' Utilisé ici pour ses propriétés hydratantes et antibactériennes.
      À utiliser avec parcimonie!! Ce produit vient de loin (en France) et a donc une empreinte carbone importante. De plus, les noix de coco sont souvent récoltées par des singes, rendus captifs et maltraités. (Voir article en lien)
      * '''Huile essentielle de Tea Tree''' : utilisées pour ses propriétés antibactériennes et sa forte odeur pour retarder puis masquer les "mauvaises odeurs" de sudation. *'''Huile essentielle de Palmarosa''' : À favoriser pour ses propriétés antibactérienne et antifongique.
      A utiliser avec parcimonie ! La production d'huile essentielle demande énormément de ressources naturelles. De plus, elles ne conviennent pas à tous et peuvent être allergisantes. À tester avant utilisation, en faible quantité sur le poignet, puis attendre 2 jours. À proscrire pour les femmes enceintes et les enfants. N'hésitez pas à consulter ce guide: https://lestrappeus.es/huiles-essentielles-bebe-et-famille-friendly/
      *'''Cire d'abeille''' : Utilisé à la fois pour ses propriétés [https://fr.wikipedia.org/wiki/Hydrophobe hydrophobes] et antibactériennes, sa haute température de fusion (63°C) permet au déodorant de rester solide en toute circonstance.
      ophobe hydrophobes] et antibactériennes, sa haute température de fusion (63°C) permet au déodorant de rester solide en toute circonstance. )
    • Fertilisants et répulsifs naturels  + (Cette préparation est nécessaire pour la 'Cette préparation est nécessaire pour la ''préparation de microorganismes liquides'', elle-même utilisée dans chacune des recettes de fertilisant et répulsif. '''Recette - proportions à respecter :''' * 1 seau de terre de la montagne, forêt ou campagne, riche en microorganismes. Il faut prélever des microorganismes présents localement, dans la montagne ou forêt alentour, car on sait que ceux-ci se sont adaptés aux conditions environnementales du milieu - autrement dit, rien ne sert d'acheter ou d'importer de la terre soi-disant riche en microorganismes car nous ne serons pas sûr qu'ils survivront et s'adapteront à notre environnement. * ½ seau de mélasse, milieu nutritif pour les micro-organismes * ½ seau d'écorce de riz Ajouter de l'eau jusqu'à obtenir 40% d'humidité → faire le test du poing : prendre une poignée de mélange et la presser. Le mélange doit prendre la forme du poing sans ruisseler d'eau. Laisser fermenter pendant 1 mois au minimum à l'ombre dans un bidon fermé hermétiquement. On peut ajouter de “vieux” microorganismes d'une préparation antérieure pour accélérer le processus. La préparation peut se conserver pendant 1 à 2 ans.ation peut se conserver pendant 1 à 2 ans.)
    • Fertilisants et répulsifs naturels  + (Cette préparation est nécessaire pour la 'Cette préparation est nécessaire pour la ''préparation de microorganismes liquides'', elle-même utilisée dans chacune des recettes de fertilisant et répulsif. '''Recette - proportions à respecter :''' * 1 seau de terre de la montagne, forêt ou campagne, riche en microorganismes. Il faut prélever des microorganismes présents localement, dans la montagne ou forêt alentour, car on sait que ceux-ci se sont adaptés aux conditions environnementales du milieu - autrement dit, rien ne sert d'acheter ou d'importer de la terre soi-disant riche en microorganismes car nous ne serons pas sûr qu'ils survivront et s'adapteront à notre environnement. * ½ seau de mélasse, milieu nutritif pour les micro-organismes * ½ seau d'écorce de riz Ajouter de l'eau jusqu'à obtenir 40% d'humidité → faire le test du poing : prendre une poignée de mélange et la presser. Le mélange doit prendre la forme du poing sans ruisseler d'eau. Laisser fermenter pendant 1 mois au minimum à l'ombre dans un bidon fermé hermétiquement. On peut ajouter de “vieux” microorganismes d'une préparation antérieure pour accélérer le processus. La préparation peut se conserver pendant 1 à 2 ans.ation peut se conserver pendant 1 à 2 ans.)
    • Pare soleil  + (choisir les vitres les plus exposées au soleil : orientées sud / sud ouest = là où le soleil tape le plus)
    • 200W Wind Turbine  + ( * Choose a plank of dimension minimum 95m * Choose a plank of dimension minimum 95mm x 35mm '''Notes''': 1) The wood should be imputrescible, light-weighted and easy to work with. For example, red cedar, Oregon pine, spruce, larch, douglas fir may be suitable. 2) For this tutorial, the section of the red cedar plank is 150mm x 45mm. 3) The parameter which determines the energy transmitted by the wind at the propeller is the length of the blade and not it’s breadth. *With the help of the blade pattern, '''lower side visible''', mark the location for the first blade. '''Notes''': 1) Put the knots and defects of the wood at the end of the blade, so that the thinnest part does not become fragile (middle-end of the blade). 2) Select the leading edge ridge as neatly as possible. This ridge will not be altered during the cutting of the blade. 3) Extend the blade tip pattern by 4-5 cm to maintain a margin in case of damage. * Do the same for the 2 other blades and cut the blades. '''Note''': When using a circular saw for cutting, be careful to place the width of the blade always on the outside of the line. * Rectify the left of the blades if necessary with the help of a plane. * Fix the 3 blades together with the help of the clamps and equalize all the irregular planes. All the 3 blades needs to be strictly identical. * Mark the position of the leading edge ridge for it to stay where it is. It will be its landmark. stay where it is. It will be its landmark. )
    • Insulated mattress  + (It consists of removing the foam inside the life jackets using scissors or an utility knife.)
    • Solar air heater  + (Detailed plans and CAO have been realised Detailed plans and CAO have been realised by [https://www.enerlog.fr/ Enerlog]. They are available in open-source here : https://cloud.ecutsa.fr/index.php/s/apRoi395xdQb52T#pdfviewer Those plans have been used for the first version built during a workshop. They are shared here in order to respond to one of the objective of Enerlog: to support the reappropriation of the knowledge by the citizens by sharing knowledge and promote its transmission.ng knowledge and promote its transmission.)
    • Pare soleil climatiseur  + (Etendre la couverture de survie sur une surface plane, face argentée vers le bas. Reporter les mesures au marqueur, et tracer les lignes à l'aide de la règle.)
    • Solar desalinator  + (For this model, the chosen floor area is 1For this model, the chosen floor area is 110 cm horizontal by 66 cm vertical. The wooden battens used have a section of 44 mm by 22 mm. The thickness of the frame is 44 mm. The frame is assembled with screws. At about 10 centimeters from the bottom of the frame, a cleat is added, as can be seen in the picture. It makes it possible to stiffen the frame, to stretch the sheet and to separate the freshwater and seawater parts (no risk of salt contamination).ter parts (no risk of salt contamination).)
    • Energy use in households  + (In France, buildings account for 45% of thIn France, buildings account for 45% of the total energy consumed, followed by transportation (33%), industry (19%), and agriculture (3%). Two-thirds of the energy consumption in this category comes from housing and one-third from service sector buildings. Within the home, in 2013, 67% of consumed energy went toward heating the home, 10.4% toward heating water, and 6% toward cooking. The remaining 16.6% was used for lighting, household appliances, office equipment, and hi-fi, all of which is grouped under the term “specific energy”. The 16,000 kWh consumed by each household costs just over €1,700 per year. In France, residential heating accounts for a larger portion of the total energy consumed (20.1%) than does industry (19%).consumed (20.1%) than does industry (19%).)
    • Simple wooden bike trolley - hand tools only - back wheel attachment  + (Here, we collect materials before adaptingHere, we collect materials before adapting the plan to what we find. At the local charity store, I found a bunch of single bed slates and a wooden board - 9€ I talked with someone who fixes second-hand bikes and sold me 2 kid front wheels - 5€ For hardware, we used whatever we had at home and headed to the hardware store to complete our set - spent around 13€ore to complete our set - spent around 13€)
    • Stand-Alone Adjustable Sink  + ('''Materials''' *Clear tubing 16/12mm (12'''Materials''' *Clear tubing 16/12mm (120cm + 20cm) *Clear tubing 12/10mm (40cm) *Plastic reducing adapter 12/10mm *Foot pump *Swivel spout tap
      ...To avoid dealing with multiple suppliers, we got the majority of the specialized materials concerning the sink on the site www.mon-camping-car.com We didn't find exactly everything we needed there. The foot pump is 12mm and the tap is 10mm, so we had to use two types of clear tubing and an adapter to get the right dimensions for the tap
      '''Directions''' #Connect the clean water bucket to the foot pump. Attach the 16/12 (1.2 meters) tube to the nozzle of the clean water bucket. Then, connect the 16/12 tube to the foot pump (The nozzle on the right when viewed from the bottom (water intake)). #Connect the foot pump to the swivel spout tap. Link the 16/12 (20cm) tube from the foot pump to the adapter and then to the 10/12 (40cm) clear tube which goes toward the swivel spout tap.
      he adapter and then to the 10/12 (40cm) clear tube which goes toward the swivel spout tap.)
    • Thermosyphon Solar Water Heater  + (Our system has no pumping system. The wateOur system has no pumping system. The water circulation is only done thanks to a thermodynamic phenomenon called '''[https://en.wikipedia.org/wiki/Thermosiphon thermosiphon]'''. The principle of the thermosiphon system is that cold water has a higher density than hot water because it is more compact. It is therefore heavier and sinking. However, all systems tend towards a state of thermodynamic equilibrium. There is a movement called [https://en.wikipedia.org/wiki/Convective_heat_transfer thermal convection] to mix hot and cold water. For this reason, the solar collector is always mounted underneath the water storage tank, so that the cold water from the tank reaches the collector via a downhill water pipe. When the water in the collector heats up, the hot water rises naturally, pushed up by the cold water and returns to the tank. The cycle tank -> water pipe -> collector heats the water until it reaches an equilibrium temperature. The consumer can then use the hot water from the top of the tank.
      e the hot water from the top of the tank. <br/>)
    • Deodorante per la casa  + (Prendre un petit format de vaporisateur pePrendre un petit format de vaporisateur permet de garder à portée de main toute la journée le déodorant en cas de besoins. * Verser dans un flacon 50% d'eau et 50% de vinaigre de cidre * OU verser 25% de vinaigre blanc et 75% de volume en eau * ajouter en option 4-8 gouttes d'huile essentielle de tea tree ou palmarosa (ou autre suivant vos préférences). Pour parfumer vous pouvez remplacer l'eau par de l'hydrolat. Attention, la présence d'acide et d'alcool du vinaigre peut irriter après rasage ou épilation. Conservation plusieures semaines/mois sans besoin de frigo.ieures semaines/mois sans besoin de frigo.)
    • Ash and animal fat soap  + (A soap is normally composed of a fatty aciA soap is normally composed of a fatty acid (here animal fat) and a basic agent (high pH) such as soda or potash (here made from ash). These two compounds create a saponification reaction that creates soap. The Chemical Process Saponification is the reaction of a fatty substance with hydroxide ions (provided by an alkali such as potash or soda) to give a carboxylate ion (soap) and glycerol (also called glycerin). Soaps are therefore mixtures of carboxylate ions and metal cations (sodium or potassium ions). The carboxylate ion is a surface-active agent that lowers the surface tension of water: it is a detergent. It ensures washing thanks to 4 qualities : The wetting power: soapy water can penetrate the small interstices of the surface in contact (cloth, skin, table, plate...) more effectively than water ; Emulsifying power: the carboxylate ions agglutinate around the dirt and penetrate between it and the surface in contact until they isolate the dirt from this surface. They form micelles containing small particles of dirt. Carboxylate ions have a lipophilic end and are therefore particularly effective against fatty substances; The dispersing power: due to the properties of the carboxylate ions and the structure of the micelles, they repel each other and are therefore dispersed in soapy water; Foaming power: a film of carboxylate ions is formed on the surface of water with low surface tension. By agitating the soapy water, air bubbles can then be trapped. The foam does not intervene as such in the washing but is an indicator of the surface tension of the liquid and thus of its detergent power.he liquid and thus of its detergent power.)
    • Improved Stove - Patsari Model  + (The dimensions may be adapted.)
    • Extinguisher  + (The low-tech fire extinguisher is based onThe low-tech fire extinguisher is based on the reaction between baking soda and acetic acid vinegar. Water absorbs heat by evaporating; baking soda decomposes during an endothermic reaction (which absorbs heat) and creates water when exposed to a temperature exceeding 270 ° C; carbon dioxide is a heavy gas that "displaces" oxygen and "starves" the fire. A hole is drilled in the bottle. When you want to activate the fire extinguisher, pierce the bag containing baking soda. Vinegar, mixed with water, reacts with baking soda to form carbon dioxide, water and sodium acetate. By shaking the bottle, the reaction is accelerated: the carbon dioxide produced pressurizes the bottle, and a CO2-water mixture is ejected through the hole, which is pointed towards the fire. Water, carbon dioxide and soda extinguish the fire, and the foam created by the washing-up liquid prevents it from being re-ignited. liquid prevents it from being re-ignited.)
    • Solar coffee roaster  + (The roaster is made of 3 different parts : *The roaster itself, using a salvage cement mixer *The solar parabola, which concentrates solar energy into the roaster *A mechanical part, which makes the roaster turn)
    • Solar multicooker  + (The use of the inner tube for the hinges enables a stable position and the right tension. The cords will help to keep the panels to 90° in relation to the sunlight. They also attach the panels to the base when they are closed.)
    • Semi-removable Mass Stove  + (There are a number of items that are needeThere are a number of items that are needed to build this stove, which can either be bought from new or salvaged. * The drums are easy to obtain, apart from the 120 litre ones, which are rare... and it can cost 50€ (excluding taxes) to buy one of this size from new. * The stove pipes, which form the fire pit, are very easy to salvage and will be considerably more expensive if bought from new. NB 1: the 2 pipes that are used for the (fixed) ash tray and the (removable) feed pipe must have a male fitting at one of their ends to accommodate the stopper. NB 2: A rigorous approach must be adopted when producing the exhaust system, using pipes which are compatible with one another. It is important to avoid leaks (condensates as well as smoke) and also the risk of fire . * Concrete can be made up of sand and fire cement but this will not be as durable as using chamotte concrete/fire cement. Chamotte consists of ground-up fire brick and must contain 25 to 40% alumina. To contact manufacturers of fire bricks, see list in the annex.Grain size of 0 to 10 mm grade is ideal, but 0 to 5 mm can also be used. AVOID making concrete with ordinary cement or ‘black’ cement (unlike fire cement, it does not contain alumina) * Vermiculite: mixed with cement acts to insulate the bottom of the container. You can find this in builder's merchants and garden centres mostly under the names of “Vermex” or “Effiperl” (NB the latter also contains perlite and is a French brand) * Ceramic glass: this is specialist glass which does not expand when exposed to heat and is resistant to thermal shocks of up to 800°C ! You can buy it in the shops (for about €400 to €600 per m²) but you can also salvage it from old inserts, electric hobs, oven doors (inner glass only, otherwise it is likely to have little resistance to heat). Do not use ordinary glass ! To test salvaged glass, stand on a flat surface and put the glass onto a gas camping stove. If it resists the heat, then that is a good sign. The final thing to do for the ‘crash test’ is pour a glass of cold water over it. If there is no reaction, then it is specialist glass. Do not put it on the grass in case it breaks. In this image, you will find the average supply costs for the different models. Taking the drum and the smoke exhaust out of the equation, the pipework will be a major part of the budget.pework will be a major part of the budget.)
    • Tawashi  + (Use your pencil and ruler to draw a square 12cmx12cm. Put 20 nails every 2 cm. With your hammer, firmly plant the nails into the board onto each of the 20 dots.)