A compact BLE smart tracker that helps quickly locate misplaced vehicle keys.

Digitally regulated CCCV flyback power supply for 230V AC. Implements cascaded PI control, ADC-based feedback, and PWM regulation via STM32L011 MCU. Features UART communication, galvanic isolation, and production-grade PCB design with full EMC compliance.

Compact ESP32-based remote controller firmware for RC projects. Reads two analog joysticks and two thin-film pressure sensors, packs the data into a small Payload and transmits it wirelessly via nRF24L01. Minimal, easy-to-adapt Arduino/PlatformIO code intended for rapid prototyping and custom receiver integration.