Arduino Pro Micro ATmega32U4 5V/16MHz Mini MCU Leonardo

The Arduino Pro Micro ATmega32U4 is a small Arduino-compatible board built around the ATmega32U4 microcontroller running at 5 V and 16 MHz. Like the Arduino Leonardo, the ATmega32U4 has USB built into the chip, so the board can act as a keyboard, mouse or serial port on a computer without a separate USB-to-serial converter. Its narrow footprint suits macro pads, game controllers, wearables and other compact projects.

Arduino Pro Micro ATmega32U4 Specifications

• Microcontroller: ATmega32U4
• Operating voltage: 5 V
• Clock speed: 16 MHz
• Flash memory: 32 KB (4 KB used by the bootloader)
• SRAM: 2.5 KB
• EEPROM: 1 KB
• USB: native USB on the microcontroller, supports USB HID (keyboard and mouse)
• Interfaces: hardware serial (UART), I2C and SPI
• Programming: Arduino IDE, as a Leonardo-type board

Arduino Pro Micro ATmega32U4 Applications

• Custom USB keyboards, macro pads and shortcut buttons
• Game controllers and other USB input devices
• Compact sensor and data logging projects
• Wearables and small robots where space is limited
• Learning Arduino programming on a breadboard-friendly board

What's in the Box

• 1 × Arduino Pro Micro ATmega32U4 5 V/16 MHz board

Tip: In the Arduino IDE, select Arduino Leonardo (or Arduino Micro) as the board. If the board stops showing up as a port after a faulty sketch, briefly connect the RST pin to GND (twice quickly on some versions) to start the bootloader, then upload a working sketch straight away.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.