BBBMINI is now Open Hardware

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Just want to tell that the DIY Ardupilot Cape for the BeagleBone Black (BBBmini) is now Open Hardware. You can get the KiCad sources here BBBMINI-PCB. I will not sell the PCBs, but I add some lines how to get 10 PCBs for less than 30$.

The BBMINI-PCB is updated to Rev 1.4, here some improvements:

  • Connector for Ultra Sonic Range Finder HC-SR04 (2$, range 3cm to 400cm, 1cm accuracy)
  • Voltage divider at pin RC_IN (RCIN) to connect 5V signals to RC_IN (RCIN), now it is possible to connect a 5V RX to the BBBmini without an external level shifter.

I also started a new project with is in an early stage of development, a Self Balancing Robot based on the BBBmini and Ardupilot software. AP_AHRS will be used to to get the pitch angle and AC_PID to balance the robot. It runs at 400 Hz, there are two Stepper Motors and there is a PRU Code inside the BeagelBone which can create up to 200000 steps per / second to the Stepper Motors.

Here is the first very early stage of development video, it balancing fine.

https://youtu.be/7Ow5aKap_sI

Best regards Mirko

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Comments

  • Hi Mirko - this is great. Thank you.

    Gary, or if anyone else is planning to have some boards made, and would be willing to let me pitch in for a board, then please let me know.

    Phil
  • @Victor

    Thank you Victor! I will have a look on your work.

  • @Gary

    There are GERBER files in the BBBMINI-PCB repo as well. Each PCB supplier should be abler to read them. This is my first KiCad project and I am very happy with Kicad.

    I just add a group on diydrones.com called BBBMINI, maybe this will be a place to get support for the BBBMINI project. Fell free to join the group!

  • Thanks for sharing Mirko. 

    Like the balancer project. I put a weekend on it a while ago and have a a skeleton built for what i called a "balancer" vehicle. Have a look at https://github.com/erlerobot/ardupilot/commits/balancer. Maybe there's something you can reuse.

    erlerobot/ardupilot
    APM Plane, APM Copter, APM Rover source. Contribute to erlerobot/ardupilot development by creating an account on GitHub.
  • Developer

    Hi Mirko, awsome balance bot!

    looking forward t more fun with the bbbmini :)

  • Hi Mirko,

    Thank you very much for making this available for us.

    I am definitely considering making a run of your board.

    I have KiCad, but am not yet familiar with it, so it may take a bit of time.

    I may convert to Eagle as my board supplier is more familiar with that.

    If I am successful I will be happy to supply Eagle files so you can include those too if you like.

    This is a nice small 2 layer board, easy to get made inexpensively, lots of places.

    Your self balancing robot is doing really well, I think stepper motors are a very good choice for this.

    Going to be using some very soon myself for an X/Y laser scanner.

    Best Regards,

    BTW Tom and others, if you are interested in getting a board with a parts kit or even pre-assembled boards, let me know, If it is feasible I am willing to pre-fund and undertake a short run < 25.

    Cost would be pretty much to cover cost of materials.

    No commitment, just let me know if you are interested.

    Best Regards,

    Gary

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