Propbot
Propbot is based on Parallax propeller.
Open source, shematics and BOM and Code at: www.xtune.se
The robot has:
4 reflex sensors to follow lines.
1 socket for xbee radio module
2 H-bridges for motor control.
1 Buzzer.
1 HD44780 LCD socket. (LED backlight via N-ch MOSFET.)
1 FTDI FT232R (USB to Serial Port).
1 LM2623 (step-up DC-DC)
1 MAX1555 (a single-cell lithium-ion charger)
1 MCP3208 (8-Channel 12-Bit A / D Converters)
1 LED for power.
1 LED debug.
1 LED charging indicator
2 RC hobby servo contacts.
Read more and see video at: http://www.xtune.se/product_info.php?cPath=23&products_id=101&language=en