I’m a professional PCB & Electronics Engineer specializing in PCB design, schematic design, embedded systems, firmware, and hardware development. I work with ESP32, STM32, Raspberry Pi CM4/CM5, Arduino, IoT, and custom embedded systems. My expertise includes power electronics, DC-DC converters, AC-DC, SMPS, BMS, BLDC/PMSM motor drivers, high-voltage PCB, EMI/EMC, and thermal optimization. I also provide audio PCB, guitar pedal, low-noise amplifier design, PCB review, debugging, redesign, reverse engineering, PCB cloning, Gerber, BOM, and manufacturing-ready PCB layouts using CAD tools.... Read more