The LilyPad USB is a LilyPad board that is programmed via USB port, rather than via TTL serial. The board is connected to the USB port of your computer to be programmed, then unplugged from the computer to use in your activity. The advantage is that a fairly expensive, specialized cable is not required. The USB interface is accomplished by the use of an ATmega32U4 microcontroller, similar to the Leonardo, rather than the ATmega328 used in the LilyPad Arduino.
The LilyPad Arduino USB has 11 pins, or pads. 9 of them may be used for inputs or outputs. The other two are for power, if the battery connector is not used.
|LilyPad Arduino USB|
|Operating Voltage||3.8 / 5|
|Test Current Draw|