ALLNET 4duino Mainboard for Lilypad (ALL_OY_2021)

The ALLNET 4duino Mainboard for Lilypad (ALL_OY_2021) is a compact, round, sewable microcontroller board designed for wearable electronics and e-textile projects. Based on the ATmega328P microcontroller, it operates at 5V with a clock speed of 16 MHz, offering 14 digital I/O pins (6 PWM), 6 analog inputs, 32 KB flash memory, 2 KB SRAM, and 1 KB EEPROM. The board features sew tabs for conductive thread, a JST connector for LiPo battery or external 2.7-5.5V supply, and indicator LEDs for power, TX, and RX. It is compatible with the Arduino IDE and comes pre-installed with the Arduino LilyPad bootloader. Ideal for smart garments, DIY projects, and interactive wearables.

Advantages

Compact round form factor with sew tabs enables seamless integration into fabric. Low power consumption and wide input voltage range support battery-powered wearable applications. Pre-loaded bootloader ensures easy programming via external FTDI/USB-to-serial converter.

Suitable for

• Wearable electronics and e-textiles
• Smart garments and fashion tech
• DIY interactive projects
• Educational STEM kits

Key specifications

• Microcontroller: ATmega328P
• Operating Voltage: 5V
• Input Voltage (Recommended): 2.7V - 5.5V
• Clock Speed: 16 MHz
• Digital I/O Pins: 14 (6 PWM outputs)
• Analog Input Pins: 6
• Flash Memory: 32 KB
• SRAM: 2 KB
• EEPROM: 1 KB
• Form Factor: Round, Sewable
• Connectivity: Sew tabs for conductive thread
• Programming Interface: Serial (requires external FTDI/USB-to-serial converter)
• Power Source: JST connector for LiPo battery or external 2.7-5.5V supply
• Indicator LEDs: Power, TX, RX
• Software Compatibility: Arduino IDE
• Max Current per I/O Pin: 40 mA
• Diameter: Approx. 50 mm
• Thickness: Approx. 3 mm
• Bootloader: Pre-installed Arduino LilyPad bootloader

Recommendations

For programming, use an external FTDI adapter or USB-to-serial converter (not included). Pair with conductive thread and LiPo battery for wearable projects.