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Mini Stewart Platform (6dof Motion Platform)

by SF3DPrint May 17, 2018
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This is really slick, very impressive! Were you able to get it to work well? Any changes you would make?

Hi Occamdude, thanks for the compliment! Yep, it works great. I haven’t configured it to run with SimTools yet (xsimulator.net) but I do have it running with ThanosTronic's 6 dof AMC1280USB controller (http://motionsim.blogspot.com). To get it to work with hobby servos I had to also get a Maestro 6 channel servo controller (https://www.pololu.com/product/1350), configure a jumper, and make some settings in the Maestro, but it works nicely!

No changes I would make except maybe pour some metal shot into the base pieces before they closed up during printing to weight them. It doesn't move fast enough to lift a corner, but would feel more substantial. Thats really not needed though. I did put three self-adhesive rubber feet on the bottom to give it some grip on a table.

If I wasn't wanting to use the AMC1280USB to learn more about it, I'd just use an Arduino to control the servos.

But I'm really pleased with how it came out. Thanks!

Arduino talks to the servo controller?

Hi Carlson. The Pololu servo controller can take high level commands and then handle the PWM output for the servos. For serial commands see their guide: https://www.pololu.com/docs/0J40/5.c It would be easy to program an Arduino to talk to the servo controller directly and Pololu has example code at their website.

In my case with the 1280USB controller, it has an Arduino in it but the guy who makes it totally reprograms the Arduino with new firmware. I don't know what's in his code but he is talking to the servo controller.