Here is a small post about my progress in the area of PCB miniaturization over 2024.

PCBs, with AA battery for scale

The PCBs are not in chronological order, but on average the smallest ones are the latest.

  1. Remote controller Mk0 PCB, 90x70mm

  2. Arduino Nano expansion board, 75x50

  3. AVR ICSP adapter board, 60x50

  4. Motorboard with STM32G0 MCU, 20x18

  5. Motorboard with PY32, 20x10. A to-be described project with 4 H-bridges and half dozen PWM outputs for LEDs.

  6. BLE-RC board with BLE antenna, 14x10

  7. Li-Ion battery protection PCB, 9x9mm. A typical DW01-based board to be used with very small batteries.

  8. flex PCB for LEDs, 1.8x27mm