Pro Micro pinout

The Arduino Pro Micro is cheap (~3$) and perfect for small boards (less than 81 keys). With a little hack though, it can drive a keyboard with up to 100 keys.

just got my hands on these rp2040 in pro micro package. it'll be a busy week. : r/olkb

ATmega32U4 Pro Micro Controller 5V 16MHz with Micro USB or USB-C

Handwire Rotary Encoder to Lily58 Pro Guide - kriscables

How to use a Pro Micro as a cheap controller/converter - deskthority

I need help wiring the pins on my pro micro. The pins are labelled different from what KBfirmware says, I'm not sure how to wire mine. Any help would be greatly appreciated.

Help! How to relate ProMicro pins? : r/MechanicalKeyboards

Arduino Pro Micro - 5V/16MHz at Rs 1750/piece, Arduino Electronic Development Board in Kolkata

Pro Micro RP2040 Hookup Guide - SparkFun Learn

MICRO/TYPE-C USB ATMEGA32U4 Module 5V 16MHz Board For Arduino ATMEGA32U4-MU Controller Pro-Micro Replace Pro Mini - AliExpress

Pro Micro With The Bootloader ATmega32U4 5V/16MHz Module Controller Mega32U4 Leonardo For Arduino - AliExpress

OSOYOO 3pcs ProMicro Board ATmega32U4 Leonardo 5V/16MHz Module Board Type C Port for Arduino : Electronics

Arduino Pro Micro Primer - Codrey Electronics