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 |
| USB Interface | Built-in Bootloader (Micro USB) |
Anonymous
Mar 28, 2026
Rating: 5/5
Excellent for HID projects
Because of the ATmega32U4, this board can emulate keyboard and mouse devices directly. I used it to build a custom macro keypad, and it worked flawlessly out of the box.
Anonymous
Mar 25, 2026
Rating: 5/5
Great for learning embedded systems
Bought this for my university project. It's affordable and compatible with the Arduino IDE. The 16MHz speed is sufficient for most real-time control tasks I've tried.
Anonymous
Mar 23, 2026
Rating: 4/5
Solid board, watch the voltage
We use these in our workshop frequently. Just remember it runs at 5V logic, so be careful connecting 3.3V sensors without level shifters. Otherwise, very reliable.
Anonymous
Mar 19, 2026
Rating: 4/5
Good value, pin layout takes getting used to
Works exactly as described. The only downside is the pin layout is different from the standard Arduino Uno, so you need to check the pinout diagram before wiring sensors.
Anonymous
Mar 12, 2026
Rating: 5/5
Perfect for compact projects
This board is incredibly small yet powerful. The built-in USB bootloader makes programming a breeze without needing an external programmer. Great for wearable tech or small drones.
Anonymous
Mar 04, 2026
Rating: 5/5
Tiny but mighty
I was surprised by how much functionality is packed into such a small form factor. The reset button is a bit small, but that's expected given the size. Highly recommended.
Q: What happens if I brick the bootloader?
A: If the bootloader is corrupted, you can reflash it using an external ISP programmer like an AVR ISP Mark II connected to the ICSP header pins.
Q: Does this support native USB host functionality?
A: No, the ATmega32U4 has native USB device capability (acting as a keyboard, mouse, etc.), but it does not support USB host mode to connect other USB devices directly.
Q: Is this board compatible with the Arduino IDE?
A: Yes, this board is fully compatible with the Arduino IDE. You just need to select 'Arduino Leonardo' or 'Pro Micro' from the board manager depending on your specific setup.
Q: Can I power this board via the RAW pin with 9V?
A: Yes, you can supply 5V to 12V to the RAW pin. The onboard regulator will step it down to the required 5V for the microcontroller.
Q: Are the analog pins 12-bit or 10-bit resolution?
A: The ADC on the ATmega32U4 provides 10-bit resolution by default, similar to other standard AVR-based Arduino boards.
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