Mach 1 overdrive clipping-section mod with the 12-position rotary clipping selector integrated onto the main PCB, D4/D5 omitted, PCB-mounted Volume/Drive/Tone controls, and a 125B-oriented control layout without Zero IOD branding.
ESP32-based USB-C powered controller for four 5 V / 1 W heater strips, with PCB-mounted safety and ambient temperature sensing, OLED UI, rotary encoder, RGB status LED, and cost-conscious reliability/protection design.
