Over the past few days, we have been comparing motor controllers and seeing how best to place 4 motors, 2 batteries, Pi and controller.
Basically, unless we have some complex belt drive we are limited with the width of the robot being as wide as the 2 x the width of the tyres + 2 x the length of the motors, and we want big tyres.
We found some nice 12mm hex hub wheels that were not too wide which also has some grip.
The length of the robot is less constrained, it obviously has to take the batteries we are using but the overall length (and height) will need to cope with our ball launcher, which will probably be the same as last year. ( 5, 6 and 5 scored in the duck shoot!! ).
We basically have a rolling chassis with the components laid out roughly where they will go.
14V battery pack with motors mounted below and Pi and electronics above. Pi Camera for line following and remote navigation using pan and tilt mount.
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