Hi, I'm Electro — an electronics hobbyist and maker documenting hands-on DIY builds with Arduino, ESP32, and IoT projects. Every guide on this blog is based on projects I've actually built, wired, and debugged myself — including the mistakes along the way. My goal is simple: clear, honest, step-by-step tutorials that actually work, without the fluff.
un circuit simple qui permet la marche et l'arrêt de moteur 12V DC avec TTL entrée de signal de commande. Le BD139 doit installé avec dissipateur de chaleur.