Quick notes:
- tested cardboard arm w/ hinge (it slips over the foam balls sometimes...)
- moved single ball collector to middle (inverted wedge)
- added powered little wheel before the ball collector to prevent clogging at ball collector entrance
- drive train thoughts:
+ can't find omnidirectional wheels in the area, online order won't come in until friday (!!)
+ but rollerblades w/ masking tape might give enough sideways slip to get around corners...
- ball collector motor (maxon) current tests:
+ at 4.5 V: 350 mA when driving ball thru, 70 mA otherwise
+ at 2.6 V: 170 mA when driving ball thru, 37 mA otherwise
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