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Prototype de Low-tech with Refugees - Low-tech & Réfugiés | Catégories : Énergie
Low-tech with Refugees - Low-tech & Réfugiés
"The Sunflower" ⚡🌻 Inspired by the concept of the sunflower, which changes direction according to the position of the sun. This project is a precursor to a larger project. The idea of this project is to maximise exposure to the sun by changing the direction and inclination of the solar panels according to the position of the sun. This is done using programmable servomotors controlled by a microprocessor.
"The Sunflower" ⚡🌻 Inspired by the concept of the sunflower, which changes direction according to the position of the sun. This project is a precursor to a larger project. The idea of this project is to maximise exposure to the sun by changing the direction and inclination of the solar panels according to the position of the sun. This is done using programmable servomotors controlled by a microprocessor.
Impression 3d, Servo Moteur, Batteries, Microprocesseur, Lowtech, ENR, Solaire, Photovoltaique, Conception Mecanique, Programmation Informatique, Panneau Solaire
This project is divided into 3 parts: mechanics (the most difficult), programming and electronics.
First of all, we made a sketch of the mechanism for this project, then we used CATIA V5 to design the 23 parts of the project. We then used PrusaSlicer to 3D print them using PLA filaments. This is the most difficult part, because we need to know exactly how the mechanism will work. So we bought 8 solar panels, 2 servomotors and rechargeable batteries. Finally, we put it all together.
We used rechargeable batteries of 1.5 V each, connected in series to give 12 volts. We then connected these batteries in parallel to the solar panels, of which there are 8, which also gives us 12 volts. In addition, 4 of the batteries power the STM32 microprocessor, and from the STM32 we power the servomotors.
After studying the chronology of sunset and sunrise in Brest over 365 days, we obtained the time difference between them (in minutes) and noted the variation in sunset and sunrise times throughout the year. For example, we found that the duration of sunshine increases each day until the 173rd day, then decreases until the end of the year, each day increasing/decreasing by 2.7 minutes.
✏️ In the first stage: Sketch
we drew a sketch to visualise the mechanism so that we could start with a more finished form.
🖥️In the second stage: drawing the parts on CATIA V5.
Based on the first part, we started drawing all the parts for the assembly.
🖨️ In the third stage: 3D printing.
Once all the parts have been completed, we print all the important parts for the mechanism.
📦 In the fourth stage: Assembly.
We proceed by connecting all the parts to create the mechanism.
👍 Le mécanisme fonctionne bien.
👎 Nous n'avons pas eu suffisamment de temps pour travailler plus de temps sur la partie programmation et électronique.
Ce projet est considéré comme un projet "low-tech" car il vise à utiliser des technologies simples, accessibles et durables pour résoudre des problèmes spécifiques, en l'occurrence maximiser l'efficacité énergétique des panneaux solaires. Le terme "low-tech" fait référence à des solutions qui sont souvent moins coûteuses, plus faciles à réparer et à maintenir, et qui réduisent la dépendance aux technologies complexes et coûteuses. Ce projet s'appuie sur des principes mécaniques et des technologies éprouvées, comme les servomoteurs et les panneaux solaires, combinés d'une manière innovante pour suivre la position du soleil, similaire au comportement naturel du tournesol. Cette approche favorise la durabilité, l'efficacité des ressources et l'accessibilité, en ligne avec les principes de la low-technologie.
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