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    Re: PhantomX Reactor - Servos Not Numbered?

    Yes, servo numbers matter; they are very important!

    You may need to connect one at a time to the Arbotix board and run the servo management sketch, and configure the correct number for each of the...
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    Re: Mech Warfare Maker Fair 2019 Rankings

    For my third match, Don beat me fair and square in a match where the only malfunction was my gun dry firing at times, and then I ended up collecting cars ...
    ...
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    5.8 GHz management: SmartAudio

    Apparently the FPV world now has a feature called "Smart Audio" to control the video transmitters, including setting output power and channel frequency.
    Except it doesn't use audio at all, it uses...
  4. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    When I click "Dynamixel 2.0" it only lists:

    XL-320
    XM430-W210
    XM430-W350

    Maybe it can actually support others, too?

    Anyway, I have an email in to customer service, we'll see what they say.
  5. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    Actually, R+ Manager 2.0 doesn't list MX-64 as a supported product.
  6. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    I clicked the "version 1" option when downloading R+, so I'm hoping that's good?
    The "scan" button first tries a version 2 scan, which doesn't find these servos.
    And the "installing firmware" log...
  7. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    I beat Odin! I lost against '99!

    One or the servos lost its position, and curled in on itself during that second fight today, so I was walking three-legged. Checking afterwards, I can't compensate...
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    Re: PhatomX with XL430-W250 servos

    The OpenCM9.04 has a USB port, so you could just use a short USB cable to talk to it using serial port.
    However, the serial USB implementation of that board has always been a bit finicky for me --...
  9. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    Good news: Advanced composite-metal fusion additive machining solved the gun jamming problem, just in time to place for the sharpshooting qualifiers!

    (Some people will just say I just put on a...
  10. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    Each piece of the gun system was tested separately, but in integration, something causes a BB jam that doesn't clear up :-(
    There's plenty of possible pinch points on the inside; I removed some in...
  11. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    Ready or not, I'll be there tomorrow.

    The magazine feeder motor has an encoder on it, wired to my Teensy, but no software. Maybe I'll work on that tomorrow between bouts.

    I grew tired of hand...
  12. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    Yes I have that going for me. Pop on home to turn out another bracket on the mill in between matches :-)

    Gun, magazine, electronics all mounted. Still need to figure out how to mount video and ...
  13. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    So much still to do. Also, broke another tap in the deep holes in the magazine bottom, so had to re-do that one, too.

    But this gun seems to mostly work, and not jam very often.
    ...
  14. Thread: Immortal (V2)

    by jwatte
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    Re: Immortal (V2)

    Aaaaawesoooome!
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    Re: Phantom Reactor Arms Servos Not Numbered

    You should assign the IDs yourself. It won't work if you don't.
    I think there is an Arbotix sketch that can do it for you, or you can do it with USB2Dynamixel and RoboPlus software on Windows.
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    Re: First steps for Super Mega Microbot

    That's .... gotta be a battery drain :-D
    Are you using the power tool pluggable batteries?
    That means you'll have an easy time swapping!
  17. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    At least I didn't break a tap in it when tapping it after this photo.
  18. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    This part. THIS PART.

    If we go out for beers next week-end, ask me about this part.

    https://watte.net/malum-the-worst-part.jpg

    Actually, better not. It's a sad story and probably no fun to...
  19. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    That looks like it should work, at least in theory ... Although I prefer to have some small resistor in series, to reduce the slew rate a little bit.

    Also, that power bus on/off MOSFET...
  20. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    I'm running a Teensy 3.2, and I run at 1 Mbps. The trick is to have a good, strong driver chip ...

    I had to look high and low to find one that was a "very good" match to the TTL bus, because the...
  21. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    Btw, those tibias are really quite long, giving the bot a wide gait. Great for speed and perhaps reducing tilt, but there are some narrow spaces in the arena ...
    Another "if I get the time" thing:...
  22. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    Moved over the gait generator, and tuned it for the new measurements and servo orientations.
    Also built a bracket for holding the gun, and brackets for holding the PCB, and mounted the RC receiver....
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    News/Announcement Re: The Robotis TurtleBot3

    And a built-in real-time clock chip, so you don't get the wrong time on boot like with the Pi ...
    Worth the price just for that :-)
  24. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    I lied! There are parts I had made but not taken pictures of. Specifically, the side brackets that both mount the scoring plates, and serve as cover holders for the battery tray. They screw into the...
  25. Thread: Malum IK

    by jwatte
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    1,992

    Re: Malum IK

    No pictures. I spent most of the free time setting up development for the Teensy I'm using, and configuring servo IDs and parameters.

    I'm using PlatformIO, with Visual Studio Code, and it can...
  26. Question(s) Re: Can't connect the servo after input voltage error

    If you hooked too high voltage to the servos, chances are that the electronics are fried.
    Robotis can replace the PCB of the servos, and doing so for the MX-64 servos will be much cheaper than...
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    News/Announcement Re: The Robotis TurtleBot3

    What's your experience with the Nano? Have you compared it to other boards?
    I kind of don't see what Nvidia wants with the Jetson Nano. It's the quad core ARM from the Jetson TX1 with half of the...
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    Re: The task (lawn mower topic)

    Neat!

    Those round colored push buttons from E-switch are favorites of mine, btw :-)
  29. Thread: Apophis 2019

    by jwatte
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    Re: Apophis 2019

    *groan*

    (Coffee through nose funny!)
  30. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    OK, most sub-assemblies assembled and laid out. (Also working on the brackets for scoring panels and video, but I'm testing new work-holding strategies and seeing impressively bent parts when I push...
  31. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    No picture yesterday, because, well ...

    https://watte.net/malum-ik-robot-fourth-brackets.jpg

    Also, broke a tap in a deep drill hole, then marred my vise jaws trying to get that tap out, then...
  32. Thread: Apophis 2019

    by jwatte
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    Re: Apophis 2019

    Ha! Inverse of what I'm doing for Malum IK :-)

    I really look forward to seeing your bot!
  33. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    Today's brackets. These are front/center, and are the feet that it will rest on when not walking. They also hold the battery tray, seen in the back right.

    These feet I could put nice edge chamfers...
  34. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    Also, building the whole thing in Fusion, down to all little brackets and bolt holes, has already saved me from several oopsies. (Bolt holes with insufficient clearance, component placements that...
  35. Thread: Malum IK

    by jwatte
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    1,992

    Re: Malum IK

    I used to use a Tormach 1100 at the Tech Shop, which was a reasonable and affordable way to get access to metalworking tools.
    Then they went belly up (TechShop that is.) After much teeth gnashing, I...
  36. Thread: Malum IK

    by jwatte
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    Re: Malum IK

    You are giving me new meele weapon ideas ...

    (Don't worry, I've seen the rules about intentional damage :-)

    Yes, I didn't chamfer the edges, because I'm just holding them in a vise and there's...
  37. Thread: Malum IK

    by jwatte
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    1,992

    Re: Malum IK

    Also, if you're really sharp-eyed, you will note that the small holes in the edges don't have threads cut. Yet.
    Because my mill doesn't have a synchronous spindle and I'm too chicken to buy a $100...
  38. Thread: Malum IK

    by jwatte
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    1,992

    Re: Malum IK

    First brackets are cut. Only ... lots more to go :-)

    https://watte.net/malum-ik-robot-first-brackets.jpg
  39. Thread: Immortal (V2)

    by jwatte
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    Re: Immortal (V2)

    Spoken like a true hero! This looks awesome.

    Some suggestions that may or may not help:

    https://www.digikey.com/product-detail/en/mechatronics-fan-group/MS2006H12D-RSR/1570-1386-ND/7606171 --...
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    Re: First steps for Super Mega Microbot

    It even has a GPU that can be fooled into doing some useful things (including compressing H.264 in hardware for storing for later offline analytics.)
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