Beetle Leonardo USB ATMEGA32U4 Mini Development Board

Compact, powerful, and incredibly versatile — the Beetle Leonardo USB ATMEGA32U4 Mini Development Board is the go-to microcontroller board for makers, hobbyists, and electronics enthusiasts alike. Built around the popular ATMEGA32U4 chip (the same microcontroller used in the Arduino Leonardo), this tiny board packs full USB HID capability into an ultra-compact 21mm footprint, making it perfect for wearable projects, custom HID devices, keyboard/mouse emulators, and more.

Why Choose the Beetle ATMEGA32U4?

Native USB Support: The ATMEGA32U4 features built-in USB communication, allowing the board to act as a USB keyboard, mouse, joystick, or other HID device — no extra hardware needed.
Ultra-Compact Design: At just 21mm, the Beetle is one of the smallest Arduino-compatible boards available, ideal for space-constrained builds and wearable electronics.
Arduino Leonardo Compatible: Programs exactly like an Arduino Leonardo using the familiar Arduino IDE — no new software learning curve required.
2 Color Options: Choose from 2 available color variants to match your project aesthetic or build style.
Plug-and-Play USB: Connects directly via USB — no FTDI chip or external USB-to-serial converter required.
Versatile GPIO: Includes digital I/O pins, PWM outputs, and analog inputs to interface with sensors, LEDs, motors, and more.

Key Specifications

Microcontroller: ATMEGA32U4
Operating Voltage: 5V
USB Interface: Native USB (HID compatible)
Size: ~21mm (ultra-mini form factor)
Compatibility: Arduino Leonardo / Arduino IDE
Color Options: 2 variants available

Perfect For

DIY wearable electronics and e-textiles
Custom USB HID devices (keyboards, gamepads, mice)
Robotics and automation projects
Sensor data logging and prototyping
Maker projects, STEM education, and classroom labs
Compact embedded system development

What's in the Box

1 × Beetle Leonardo USB ATMEGA32U4 Mini Development Board

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Frequently Asked Questions

Q: Is the Beetle Leonardo ATMEGA32U4 compatible with the Arduino IDE?

A: Yes! The Beetle Leonardo ATMEGA32U4 Mini Development Board is fully compatible with the Arduino IDE. Simply select "Arduino Leonardo" as your board type, and you can upload sketches and code exactly as you would with a standard Arduino Leonardo — no special drivers or software needed for most operating systems.

Q: What makes the ATMEGA32U4 chip special for USB projects?

A: The ATMEGA32U4 microcontroller features built-in native USB support, which means it can communicate directly with a computer as a USB HID device (such as a keyboard, mouse, or gamepad) without requiring an external USB-to-serial converter. This makes the Beetle board ideal for building custom input devices, automation tools, and interactive electronics projects.

Q: How small is the Beetle Leonardo Development Board?

A: The Beetle Leonardo measures approximately 21mm, making it one of the most compact Arduino-compatible development boards available. Its tiny size makes it a top choice for wearable electronics, miniaturized prototypes, and space-constrained enclosures.

Q: Can beginners use this development board?

A: Absolutely. While the Beetle ATMEGA32U4 is a favorite among experienced makers, its Arduino Leonardo compatibility means beginners with basic Arduino knowledge can get started quickly. The vast Arduino community and wealth of online tutorials make it easy to learn and build your first USB HID project.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.