Hi,

@Masta, The servo's are MG995 pro, i didn't tested the torque, but my robot is made with 5mm plywood. It's light here is the specifications :

Dimension : 40mm x 19mm x 43mm
Net weight: 69g
Operating Speed : 0.17sec / 60 degrees (4.8V no load)
Operating Speed : 0.13sec / 60 degrees (6.0V no load)
Stall Torque : 13 kg-cm (180.5 oz-in) at 4.8V
Stall Torque : 15 kg-cm (208.3 oz-in) at 6V
Operation Voltage : 4.8 - 7.2Volts
Gear Type: All Metal Gears
Connector Wire: Heavy Duty, 11.81" (300mm)

@Grog, No path, it's just a simple joystick, you can see the USB cable( it had a blue led lol ) . I still didn't tryed the ultrasonic sensors and i need to buy encoders. I've lot of idea, but not enouth time . And for now, i've still some harware problem to solve : As you can hear in the video, there is the "sound" of the servo in the speakers, the speed of the wheels motor is max 20% because the hardware that decrease 12v to 6v miss some ampers , and the last test i did with utrasonic sensors gave unstable distances ( move beetween 60cm and 180cm quickly ) . For the ultrasonic some test learnt me that the power isn't the problem, so i need to check the arduino's connections .

For the future, i think to give him ( yes, not IT ) an IR emiter , a temperature sensor, the ability to control the lightning of the Leds of the webcams (6 white led on each) . I wan't also give him the possibility to understand french (need to change some file for sphinx) and a lot of other thing but for all that i must learn, learn and learn lol ( I love learn ! )

As you can see , i've started to build him a "suit" with strong cardboard . One more thing to finish !

I will make some picture of the hardware. You can see a part in his back that isn't paint yet . It's a trap to acces easilly to the USB hub, the raspberry bananaPI, and connectors that give me thhe possibility to "cut" sweety in two ( if i need to put it in my car a day for a trip ! )

That all for now !