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Thread: First steps for Super Mega Microbot

  1. #41

    Re: First steps for Super Mega Microbot

    Wow, welcome back Josh!

  2. #42
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    Re: First steps for Super Mega Microbot

    Josh, love to have you enter again in 2019! Super Mega Microbot will raise the tech in the whole event.

  3. #43
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    Re: First steps for Super Mega Microbot

    Good to see progress is still being made on Super Mega. We missed you at Robogames 2018. Hope to see you in 2019!

  4. Re: First steps for Super Mega Microbot

    Another update... trying to see if I can build some more capable actuators for faster walking (maybe eventually running?): https://jpieper.com/2018/10/21/impro...tors-for-smmb/


  5. #45

    Re: First steps for Super Mega Microbot

    A fast high-powered brushless robot servo with built-in controller would probably be a nice product to sell as a niche market.
    Just sayin' :-)
    Also, without brushes, there's less that can go wrong, so it might be more robust, too...

  6. Re: First steps for Super Mega Microbot

    Certainly could be more robust. Also a lot of new ways for it to get busted too... I was putting 200W into this one for short periods and boy does that motor get hot quickly!

  7. #47

    Re: First steps for Super Mega Microbot

    You have cold winters in Boston, so that seems like a benefit :-)

  8. Re: First steps for Super Mega Microbot

    Slow but steady progress...


  9. #49

    Re: First steps for Super Mega Microbot

    That's super awesome!

    (Do you have access to internal company machining resources for making parts?)

  10. Re: First steps for Super Mega Microbot

    Nope. The only machined part in the whole assembly is the piece of aluminum scrap holding the motors onto the guide rail that I butchered with a jigsaw, drill press, and dremel. Everything else is either off the shelf or 3d printed. All but the legs are shapeways parts, the leg parts I had done in Onyx on 3dhubs.

    I'm torn how much I want to get machined to make enough for the first whole mech. I only have basic tools myself, so will need to send nearly everything out. There is only so much you can do with plastic. I'm considering trying out some of the fiber reinforced Mark Forged parts through 3dhubs to see how far that goes.

    The big challenges are the legs, for which the Onyx probably isn't going to work once there is a 3rd axis and they have to support weight in the lateral direction, heat dissipation from the motor/controller, and the gears. Plastic is a terrible heat conductor and I can't really l leave anything exposed to flying projectiles. The off the shelf gears are a sub-optimal gearing ratio and awfully heavy.

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