Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Microcontroller | ATMega32U4 |
| Operating Voltage | 5V |
| Clock Speed | 16 MHz |
| Digital I/O Pins | 18 |
| PWM Channels | 7 |
| Analog Input Channels | 12 |
| Flash Memory | 32 KB |
| SRAM | 2.5 KB |
| EEPROM | 1 KB |
| Interface | Micro USB |
Anonymous
Mar 28, 2026
Rating: 5/5
Excellent I2C performance
I am running multiple sensors over I2C with this board, and communication is stable. The 16MHz speed provides enough processing power for real-time data logging.
Anonymous
Mar 13, 2026
Rating: 5/5
Perfect for custom keyboard projects
This Pro Micro board works flawlessly with QMK firmware. The compact size made it easy to fit inside my mechanical keyboard case. Recognition on Windows and Linux was instant.
Anonymous
Mar 09, 2026
Rating: 5/5
Reliable for flight controller mods
Used this as a secondary controller for LED strips on my drone. The 5V output is stable, and the board handles vibration well. Highly recommended for DIY aerospace hobbies.
Anonymous
Mar 08, 2026
Rating: 3/5
Good board, cable not included
The hardware is solid, but I was disappointed that no USB cable was included in the package. Make sure you have a data-capable Micro USB cable ready before you start.
Anonymous
Mar 04, 2026
Rating: 5/5
Easy to use with Arduino IDE
As a beginner, I was worried about setup, but installing the board manager URL and selecting the correct port was straightforward. It uploaded my first blink sketch without errors.
Anonymous
Mar 01, 2026
Rating: 4/5
Great value, minor pin labeling issue
The board functions exactly as expected for the price. My only complaint is that the silkscreen labeling for some pins is a bit faint, so I had to double-check the datasheet.
Q: Is there an on-board reset button?
A: Yes, there is a small reset button located near the USB connector. You can also trigger a reset programmatically by connecting the RST and GND pins.
Q: What bootloader does this come pre-flashed with?
A: It comes pre-flashed with the Caterina bootloader, which makes it compatible with the standard Arduino Leonardo profile in the IDE.
Q: How much current can the 5V pin supply?
A: The 5V pin is directly connected to the USB VBUS when powered via USB, so it can supply up to 500mA depending on your host computer's port limits. Do not exceed this.
Q: Does this board support 3.3V logic levels?
A: No, this specific model operates at 5V logic levels. Applying 3.3V to inputs may work, but output signals will be 5V, which could damage 3.3V-only peripherals.
Q: Can I use this to emulate a keyboard and mouse simultaneously?
A: Yes, the ATMega32U4 has native USB support, allowing it to emulate HID devices like keyboards, mice, and game controllers simultaneously via code.
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