Project: Robot Jeep

version 0.3
Update #3: The new frame is 4mm bitbeam plate printed in PLA-plus, which is great because it's metric now. And I have an arduino, motor-shield, and battery installed - still need to dial-in power to the motors. Experimentally, 5-volt at 1-amp is only enough juice to run one type-130 dc motor.

I tested with a 7.4-volt LiPo pack (and a smaller power connector) in this video. With the controller set to random movement, heat-sink temp peaked at 140, which is good since the whole thing melts at 205.

The treads are not tracking smoothly - I'm getting binds and clicks around the front sprocket. Think I need to widen the front axle slightly, and maybe print another track design. I'd rather not sand these smooth by hand - maybe I can wear them in. =)


version 0.2
Update #2: I've added an inexpensive Tamiya Double Gearbox under the controller - setup for a 114:1 gear-ratio. The Tamiya axle was a quarter-inch too short, so I printed a new sprocket-wheel with axle extension. I'm using a simple friction-fit to the hex-bar rear axle.


version 0.1
Here I test-fitted these 3d-printed tank-treads, and a (temporary) Parallax controller. This project was inspired by the "RC MB Jeep in 1:10" and "Simple Arduino Tank" out on Thingiverse. I've often daydreamed building a full-size jeep out in the garage - so I hope this build can scratch that itch.

Near-term, I'd like simple radio-control and a first-person-view (FPV) camera. Long-term, I'll swap-in a Arduino controller with Android, RobotOS, vision, self-navigation - the whole enchilada.

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