Rover based on power wheelchair, Sabertooth and Pixhawk

Posted by AndyL on April 28, 2016 at 6:24am

A couple of threads here show members using power wheelchair, Sabertooth and Pixhawk to build an autonomous rover. The rc portion with Sabertooth and an inexpensive 2.4Ghz controller seems easy, as I have accomplished the same with three used power wheelchairs. However, several members attempted to integrate Pixhawk, GPS with Sabertooth to make the rover autonomous ran into a lot of problems. 

Could someone please share the details of a successful use case?  

Thank you very much in advance.

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Replies

  • Anders Wikstrom May 1, 2016 at 11:28pm

    I have an autonomous rover project that runs: Pixhawk, GPS and 2x25A Sabertooth. It was running great last summer but currently there is a bug in the firmware preventing skid steering to work, at least in manual mode. (it works fine if I use an older firmware) Testing on an open field gives you very good result. Same track, oven and over, with a few decimeter variations.

    What kind of trouble are you seeing?

    Anders
    Sweden

    • AndyL > Anders Wikstrom May 2, 2016 at 5:03am

      I am not in any troubles yet. Just planning to purchase Pixhawk to add the autonomous function. Want to be careful before investing a few hundred dollars and opening a can of worms. 

      Could you share your wiring schmatics?

    • Anders Wikstrom > AndyL May 3, 2016 at 10:43pm

      OK! I can fix a hand-written schematics of this. Can you PM me your email address.

      Anders

  • AndyL April 28, 2016 at 6:28am

    Please note that I am only interested in autonomous ground vehicles. Many autopilot wikis mix up ground rovers with aerial drones, which I have no plan to get into. Thank you.

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