If you are interested in building your own Laser Tag system:

- All source code is FREE to download (PicBasic Pro).
- All documentation is FREE to download (full schematics and parts lists).
- Update firmware using freeware bootloader.

Pre-programmed PIC18F2525 = $10.00
Bare PCB for Main Board = $8.00 (with solder mask and silkscreen)

Details here:
http://www.lasertagparts.com/mtdesign.htm

Parts available here:
http://www.lasertagparts.com/order.htm