The LilyPad Arduino is designed for e-textiles and wearables projects. It can be sewn to fabric and similarly mounted power supplies, sensors and actuators with conductive thread.
It is based on ATmega328P.
Warning: Don't power the LilyPad Arduino with more than 5.5 volts, or plug the power in backwards, you'll kill it.
For details, visit LilyPad Arduino Main Board page.
Visit LilyPad Setup page.

Visit FT232RL USB to RS232(TTL) page.
1 Visit Arduino Official Site.
2 Learn Arduino - Getting Started.
3 Download Arduino Software, it is free, open source, and available for Windows, Mac OS, and Linux.
4 The official Arduino multi-lingual forum is the place to start with questions ...