AMX3d Lilypad Arduino - Lilypad Development Main Board - The Silver Dollar Sized Arduino Designed for e-Textile and Wearable Projects&ndash; Power by Battery or USB Connector Cable. E-TEXTILES PROJECTS: This Silver Dollar sized, ultra thin programmable Arduino LilyPad Processor was designed for sewing sensors into clothing and textiles. MAIN BOARD: The Lilypad Arduino USB has 9 digital input/output pins 8 MHz resonator, JST connector for a 3.7V LiPo battery and reset button. USB CONNECTOR: Attach the LilyPad board to your computer with a micro USB cable or power it with a battery to get started. ATMEGA328P UPGRADE: The ATmega32U4 board module is an upgrade to the ATmega328p. It runs Arduino sketches - plug a USB cable into the LilyPad, load and go! AMX3D ACCESSORIES: The best LilyPad Arduino creationsstart with the great inputs, outputs and parts. If there are any problems with your Main Board USB just let us know!