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  1. Thread: mjbots quad A0

    by jpieper
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    1,394

    Re: mjbots quad A0

    Isn't a day a better day when you learn something from a dictionary? (I suppose even a virtual "google dictionary"...)
  2. Thread: mjbots quad A0

    by jpieper
    Replies
    7
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    1,394

    Re: mjbots quad A0

    A short video update:


    https://youtu.be/b2TjEfJi2AE
  3. Thread: mjbots quad A0

    by jpieper
    Replies
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    1,394

    Re: mjbots quad A0

    Thanks for the video compliments. All the driving was Zia, with only a few minutes to practice beforehand. That gave me a free hand to mangle all the camera shots. ;)
  4. Thread: mjbots quad A0

    by jpieper
    Replies
    7
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    1,394

    mjbots quad A0

    Many of you have probably seen my work on Super Mega Microbot's various incarnations over in the Mech Warfare sub-forum. I'm hoping to keep competing there with variations on this robot but wanted...
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    Re: First steps for Super Mega Microbot

    Not dead yet...


    https://www.youtube.com/watch?v=E3QCTPOWj1c

    This used *very* conservative parameters, as I don't really want to break things until I've done more testing and have more spares....
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    Re: Malum Gun Sub-thread

    For those of us who do have enough space and are maybe looking to crib GenghisDhon's design (thanks for sharing Don), where was/is it posted?
  7. Re: Maker Faire 2019 Mech Warfare (WMFNY in Queens on Sept 21 and 22)

    Yep, as I said in person, I will be there. Mikhail should be able to make it to I think. Hopefully with at least 2 mechs, since I can drive!
  8. Thread: Malum IK

    by jpieper
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    12,717

    Re: Malum IK

    Well, at least you are only a short drive away still, right? So you don't have to burn a travel day like most of us!

    7523

    I already had to pack up...
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    Re: First steps for Super Mega Microbot

    This version is all gearboxes, 6x reduction planetary. All the previous jumping videos were with only direct drive motors. The gearbox versions have probably 12x the torque and still can go...
  10. Thread: Immortal (V2)

    by jpieper
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    Re: Immortal (V2)

    Mad props!
  11. Replies
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    Re: First steps for Super Mega Microbot

    Now I can walk around and shoot for 10 minutes, that means I'm ready right?

    spoiler alert... 10 or so minutes of *really slow* walking interspersed with a few BB shots

    ...
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    Re: First steps for Super Mega Microbot

    It is actually relatively efficient at just walking. The motors are all sized for running (although there is no way I'm doing anything like that soon). Just walking, my power tool battery should be...
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    Re: First steps for Super Mega Microbot

    Heh. Apparently I can't work the forum. Post should be updated with an actual picture I hope!
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    Re: First steps for Super Mega Microbot

    Because my robot wasn't big enough already...

    7521

    20lbs and counting... Fortunately, both for everyone else and me, it is at best going to be a lumbering giant for the weekend.

    Still have...
  15. Thread: Malum IK

    by jpieper
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    12,717

    Re: Malum IK

    I've been meaning to ask what mill you use, or is it a homebuilt one?
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    Re: Cleaning up the stickies?

    <crickets...>

    Guess that means no. :(
  17. Thread: Malum IK

    by jpieper
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    12,717

    Re: Malum IK

    Those also look like really sharp edges... better to shred anything that gets too close I suppose. ;)
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    Re: First steps for Super Mega Microbot

    Yep, I've got the hardware encoder compressing to h264 with low latency for streaming over IP...
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    Re: First steps for Super Mega Microbot

    Well, like most tortoise and hare stories, you know how this will end. ;)

    Yeah, I've got the pi3 doing aruco target tracking using whatever random technique is built into opencv. Without too much...
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    Re: First steps for Super Mega Microbot

    Not much functionally in this revision of the board... it supports the new 5S bus voltage and the RS485 based communcations protocol. It no longer has USB pass through, as the new turret has an rpi3...
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    Cleaning up the stickies?

    I've been meaning to ask this for a while. Does anyone have bits to clean up all the stale sticky threads and maybe just sticky the ones which are still relevant?
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    Re: First steps for Super Mega Microbot

    And fortunately, the new gimbal control board seems to have functioned correctly on the first try. I'm basically out of time for another revision, so that was good!


    https://youtu.be/47oez2-oWc8
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    Re: Mech Warfare at Bay Area Maker Faire 2019

    Thanks! Yep, I'm planning on using a similar semi-custom 5.8Ghz video-over-IP as I used last time, but wanted to be able to transmit to the monitors standing in front of the arenas from my laptop. ...
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    Re: Mech Warfare at Bay Area Maker Faire 2019

    GhengisDon: Do you plan on having a video display again? Any hint on what transmitter(s) R-Team is using so that I can get a compatible one to display my view?
  25. Thread: Malum IK

    by jpieper
    Replies
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    12,717

    Re: Malum IK

    Heh. I don't know. I think I might have found a bot that needs more work than mine. ;)
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    Re: First steps for Super Mega Microbot

    Yep, the legs definitely have room to crouch more, even within their current thermal and power limits. I did these first tests up high largely for stability. I still have direct drive motors on the...
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    Re: First steps for Super Mega Microbot

    Well, I'm working super hard to make this happen, but as is the way of things it is all coming together at the last minute.

    I've got at least a little progress to report, in the form of actual...
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    Re: Mech Warfare at Bay Area Maker Faire 2019

    To add another question... I'd be interested in broadcasting my laptop's screen over the 5.8Ghz video if you're going to have the public display again. Anyone know what a viable VGA->5.8Ghz (or...
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    Re: Mech Warfare at Bay Area Maker Faire 2019

    Any updates on if the registration process is good to go?
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    Re: First steps for Super Mega Microbot

    Continued progress... I'm probably about 85% likelihood that I'll be able to get a mech with these legs going in time for the Maker Faire. All the parts are either here or expected to arrive in the...
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    Re: Mech Warfare at Bay Area Maker Faire 2019

    I'm almost certain to bring at least one mech, likely two, with an outside chance of 3 depending upon if I can convince Mikhail to come.
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    Re: First steps for Super Mega Microbot

    Continued progress, maybe slower than I'd like, but progress none the less... ;)


    https://www.youtube.com/watch?v=PHQ1jWSkDx8
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    Re: First steps for Super Mega Microbot

    They claim it is significantly stronger and stiffer than straight nylon. https://support.markforged.com/hc/en-us/articles/209934486-Onyx

    Subjectively they certainly feel much stiffer than what I...
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    Re: First steps for Super Mega Microbot

    In this case the gearbox is actually supported by two separate bearings internally on either side of a planet carrier, so it is plenty rigid and robust to torsional loads. However, the Onyx printed...
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    Re: First steps for Super Mega Microbot

    Yeah, I'm not worried about anything getting fractured by BBs with any of the materials, even shapeways nylon. I used Onyx for the legs because they were bearing load over a long lever arm. With at...
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    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...
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    Re: First steps for Super Mega Microbot

    Slow but steady progress...


    https://youtu.be/pVTEgMYdDoI
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    Re: 2018 Tucson Mech Brawl

    I'm not going to be able to make December, but would be up for coming in the spring if you pull together something!
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    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!
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    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/improved-actuators-for-smmb/

    ...
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