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Pro Micro ATmega32U4 5V 16MHz USB-C Development Board
ATmega32U4 · 5 V · 16 MHz · Native USB · USB-C · Arduino compatible
£6.49
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ATmega32U4MCU
16 MHzClock
5 VLogic
32 KBFlash
2.5 KBSRAM
Native USB / USB-CUSB
Product overview
A compact Arduino-compatible development board based on the ATmega32U4. Because USB is handled directly by the microcontroller, it is particularly useful for projects that need native USB serial or HID functionality such as keyboards, button boxes and custom controllers.
Ideal for
Arduino-compatible projects
USB HID keyboards & controls
Button boxes & input devices
Compact embedded prototypes
Serial USB interfaces
Education & breadboard projects
Technical specifications
| Microcontroller | ATmega32U4 8-bit AVR |
|---|---|
| Processor speed | 16 MHz |
| Operating / logic voltage | 5 V |
| Flash memory | 32 KB total flash; application space depends on bootloader |
| SRAM | 2.5 KB |
| EEPROM | 1 KB |
| Digital I/O | 12 digital I/O on the common Pro Micro format |
| PWM | 5 PWM-capable pins |
| ADC | 9 × 10-bit ADC channels |
| Interfaces | UART, I²C and SPI |
| USB | Native USB CDC / HID via USB-C |
| Frameworks | Arduino IDE and compatible AVR toolchains |
Good to know
- Select a 5 V / 16 MHz Pro Micro or compatible ATmega32U4 board profile in your IDE.
- A data-capable USB-C cable is required for programming and USB communication.
- Two loose male header strips are supplied unsoldered on the current listing.
Related development boards
Need wireless connectivity instead of native AVR USB? Compare the ESP32-C3 Super Mini for compact Wi-Fi/BLE projects or the ESP32-WROOM-32 for a general-purpose wireless development board.
Ready to order?
Available from Aetherwatt on eBay with free UK delivery.