Embedded systems engineer specializing in ESP32 and IoT. I build commercial devices end-to-end: firmware, touchscreen UIs (LVGL), Wi-Fi/MQTT connectivity, and C#/.NET backends with database integration. I've designed and deployed multi-unit ESP32 display systems running in real businesses, plus vending machine controllers and Linux SBC video solutions (Rockchip, Allwinner). I write clean, documented code and deliver working results, not just prototypes. Message me before ordering so we can scope your project.... Lee más