Arduino ProMicro
Introduction
ProMicro is a small Arduino development board that uses the ATmega32U4 microcontroller, featuring USB interface and built-in USB HID support, which can be used as USB devices such as keyboards, mice, and game controllers. ProMicro also has 6 analog input pins and 12 digital input/output pins, which can be used to connect various sensors, actuators, and other peripheral devices. ProMicro is small in size and powerful in functionality, making it very suitable for embedded systems, robotics, electronic toys, and other projects. Due to its compact size and flexible functionality, ProMicro is also widely used in DIY computer keyboards, game controllers, and other homemade electronic products.
Product Photos

Product Specifications
- Microcontroller: Atmega32u4
- Clock Frequency: 16 MHz
- Flash Memory: 32KB
- SRAM: 2.5KB
- EEPROM: 1KB
Dimension Diagram

Pin Description

Learning Resources
Corne Split Keyboard

Troubleshooting
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