Arduino Pro Micro ATMega32U4 5V/16MHZ

The Arduino Pro Micro ATmega32U4 (5V/16MHz) is an ultra-compact, breadboard-friendly development board. Because its microcontroller features a built-in USB transceiver, the board natively emulates USB devices like keyboards, mice, and serial/COM ports.Core Specifications

• Microcontroller: ATmega32U4
• Operating Voltage: 5V
• Clock Speed: 16 MHz
• Digital I/O Pins: 12 (with 5 PWM outputs)
• Analog Input Pins: 4 to 9 (depending on the specific clone/pinout)
• Hardware Serial: Dedicated Rx and Tx pins

How to Program It

1. Board Selection: In the Arduino IDE, you must select “Arduino Leonardo” under the Tools > Board menu to successfully upload sketches.
2. Port: Choose the corresponding COM port that appears when you plug in your board’s Micro-USB or Type-C connector.

Important Power Constraints

• Voltage Input: The onboard voltage regulator accepts an input of 6V to 9V DC.
• RAW Pin: Always connect unregulated power supplies to the RAW pin, not the VCC pin. Supplying voltage directly to the VCC pin will bypass the regulator and permanently damage the 5V microcontroller.
• VCC Pin: The VCC pin acts as a 5V regulated output to power low-current sensors.