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Arduino LilyPad ATmega32U4
The Arduino LilyPad ATmega32U4 is a wearable microcontroller board designed for e-textiles and sewable electronics projects. Built around the ATmega32U4 chip with native USB support, it features large sew tabs and a slim circular form factor that integrates seamlessly into fabric, clothing, and soft circuits — making it the go-to board for interactive wearable designs.
Key Features
- ATmega32U4 MCU — native USB HID support, acts as keyboard, mouse, or game controller without extra chip
- Wearable Form Factor — circular PCB with large conductive sew tabs for thread-based connections
- 9 Digital I/O Pins — 4 PWM-capable for LED dimming, motor control, and analog output
- 4 Analog Input Pins — 10-bit ADC for sensor readings
- Onboard Micro-USB — direct USB programming and power, no FTDI programmer needed
- Low-Profile Design — thin and lightweight, ideal for embedding in garments
- Arduino IDE Compatible — programs just like a standard Arduino Leonardo
- 3.3V / 5V Operation — flexible power input via LiPo battery or USB
Technical Specifications
- Microcontroller: ATmega32U4
- Operating Voltage: 3.3V
- Input Voltage: 3.8V – 5V
- Clock Speed: 8 MHz
- Flash Memory: 32 KB (4 KB used by bootloader)
- SRAM: 2.5 KB | EEPROM: 1 KB
- Digital I/O Pins: 9 (4 PWM)
- Analog Inputs: 4
- USB: Native USB (ATmega32U4)
- Connector: Micro-USB
- Form Factor: Circular, sewable tabs
Ideal For
Perfect for interactive wearables, smart clothing, LED-embedded costumes, soft robotics, and any e-textile project that needs a programmable, sewable microcontroller with native USB capability.
Programs as Arduino Leonardo in the Arduino IDE. Compatible with conductive thread and LiPo batteries.