Front and rear view of Robinho... and a bottom view with his gearbox and bumpers switches.

Statistics:
Weight = 420g
Height = 95mm
Width = 115mm
Length = 85mm
Bumpers lenght = 150mm

Power:
3,6 Volts x 600mA/h NiCa (3 x AA cells) for motors.
9 Volts x 200mA/h NiCa for logic, from this generates +5V with a switched regulator.

Control:
Main Processor: BasicStamp2 I.C. (Parallax Inc.)
Slave Processor: PIC16C61 (Mini SSC - Serial Servo Controler, Scott Edwards Electronics)

Sensors:
2 x 40Khz IR obstacle avoidance with IR iluminator
2 x bump switch

I/O:
2 x PWM outputs for motors
1 x PWM audio out (piezzo speaker)
1 x conector for (old) SPO-256-AL2 Speach Processor ( 4 I/O pins and GND)

Frame:
Aluminum chassis with left and right wheels attached to a dual-gearmotor reducer.