Hi, I’m James, a professional PCB Designer and Embedded Systems Engineer specializing in firmware development for IoT, automation, and smart electronic products. I design high-quality PCB layouts, schematics, and embedded solutions using ESP32, STM32, Arduino, and other microcontrollers. My expertise includes RTOS, UART, SPI, I2C, sensor integration, power electronics, LED driver circuits, and firmware optimization. I focus on reliable, production-ready designs with clear communication, fast delivery, and professional support for every project.... Read more