I develop Arduino and ESP32 prototypes, Flutter apps, custom websites and REST APIs with Node.js, Express and MongoDB. I can help with sensor readings, motor control logic, WiFi/HTTP connections, reproducible bugs, app features and API integration. My projects include an ESP32 solar panel cleaner and Flutter interfaces connected to backend services. We agree on scope, testing and delivery stages before starting. You receive source code and setup notes for the agreed work. Hardware tests depend on available components. Contact me to discuss your project in English or French.... Lee más