Al's Robotics....

Head

Not a lot to say about this one just that it uses 2 solar cells, 1F capacitor, 2 photo transistors, 74HC14 and a Diode SE. You can see all the components that I used for this on the components page and also find out how to build the Diode SE here. But the real special thing about this head is the motor it uses, it's a planetary geared motor made by Maxon in Switzerland and has a cost of around £100 (good thing I didn't have to pay for it), it's almost unstoppable and only draws 2.5 mA at 3 Volts which is really good.

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