The Mini Proto is an M5Unit size universal prototyping board. Smaller than the PROTO unit, the size is exactly the same as the regular M5unit. You can have the total freedom to make your own project as you want it, with prototyping boards that allow laying out the customised circuit to interact with the M5 core CONNEXT Port A, B or C. For different CONNEXT ports, you will be able to interact with different pins that ported out from ESP32. * PORTA: GPIO 21, 22 * PORTB: GPIO 36, 26 * PORTC: GPIO 16, 17 Features * Hole Size: 0.039" 1mm (CNC Drilled) * Hole Pitch: 0.1 in - (2.54 mm) * Entire Hole Quantity: 40 Holes * Two Lego-compatible holes Package Contents * 1x Mini Proto unit * 1x GROVE cable Specifications Resources Parameter Net weight 3g Gross weight 15g Product Size 32 x 24 x 8mm Package Size 68 x 52 x 12mm Resources * Documents https://elecena.pl/product/22723899/m5stack-new-mini-proto-unit-40-holes 2023-03-07 https://elecena.pl/product/22723899/m5stack-new-mini-proto-unit-40-holes 2023-12-27 https://elecena.pl/product/22723899/m5stack-new-mini-proto-unit-40-holes 2024-09-19 https://elecena.pl/product/22723899/m5stack-new-mini-proto-unit-40-holes 2024-11-29 https://elecena.pl/product/22723899/m5stack-new-mini-proto-unit-40-holes 2024-11-30 https://elecena.pl/product/22723899/m5stack-new-mini-proto-unit-40-holes 2025-04-29 https://elecena.pl/product/22723899/m5stack-new-mini-proto-unit-40-holes 2025-11-28 https://elecena.pl/product/22723899/m5stack-new-mini-proto-unit-40-holes 2025-11-29