This is my second version of my ERV-1 robot.
Update : 27-2-2012
Picaxe 28x1 Project-board mounted above the motors.
Home-made Power supply board, with one row for 1,5 volts and one row for 4,5 volts.
Modified cable for the IR-sensors.
The changes are:
Compact design, a few improvements and the battery standing for more room for other parts.
With integrated speaker.