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Type: Posts; User: jingleby

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    USB + External Power on 3.2

    I have cut the V-USB line on the bottom of my 3.2 and confirmed with a continuity checker it is disconnected. When I power the circuit ONLY externally using this example everything works as expected....
  2. AMAZING! thank you for clarifying the bug and the...

    AMAZING! thank you for clarifying the bug and the array issue. I am sorry to ask so many questions, but really do appreciate your help.

    I still can't get 2 sets of motors to move. I get this...
  3. I am running into issues compiling with 10 motors...

    I am running into issues compiling with 10 motors and can't figure out why. At the moment all are running at the same speed. For some reason the log says "Too many motors used", though I am only...
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    Thanks for testing this out. I did forget about...

    Thanks for testing this out. I did forget about the common ground and will give that a try.
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    I2C Examples not working on Teensy 3.6

    I am at a loss as to why I can't get any communication between 2 teensy 3.6's. I am using a pull-up resistor (tried 4.7k and 2.2k). I've seen a variety of posts with similar issues. I had it working...
  6. Scheduling Installation / Boot-up Sequence for 10x Steppers in Storefront

    I am finalizing an installation involving 10x stepper motors on a 24V PSU and trying to wrap my head around how to schedule the performance as it is in a storefront window.

    For previous...
  7. This is great, thanks. I'll certainly consider...

    This is great, thanks. I'll certainly consider PCB's on a future iteration.

    I'm moving everything over from bboards to protoboards this week. Fingers crossed the recable and 12v to 24v change...
  8. I am adapting my plan to work for TeensyStep and...

    I am adapting my plan to work for TeensyStep and am looking to better understand the library and hardware limitations (FTM/PIT/Interval Timers).

    Would the hardware limitations limit either Opt 1...
  9. Yep exactly. Though I don't think perfect...

    Yep exactly. Though I don't think perfect connections will solve it. I suspect something to restrict backflow emf before the driver (capacitor between driver and this restrictor) could do it?

    I...
  10. FIXED IT (But don't totally understand it). ...

    FIXED IT (But don't totally understand it).

    Motor Power needs to be ran direct from the motor, not parallel (2 cables to breadboard, then off rails). 2 motors can successfully be ran in parallel,...
  11. Just tried this but no luck. Should the Grounds...

    Just tried this but no luck. Should the Grounds between the motor PSU and Microcontroller be connected? The driver details don't indicate that. I suspect that is because they are optoisolated or...
  12. Do you mean basically from the same ports and to...

    Do you mean basically from the same ports and to the same rails but simply another wire?

    And yes, teensy is supplying Vin ... though I have also tried the regulated 3.3V 2 pins down from Vin.
  13. *beyond safety margin not begins

    *beyond safety margin not begins
  14. Thanks for the reply. Yes, the drv8825 drivers...

    Thanks for the reply. Yes, the drv8825 drivers can accept 3.3 or at least say they can.

    They all work at 3.3v when running only 2 motors. Something about adding the third is pushing things begins...
  15. Also tried confirming 2 work, then adding the 3rd...

    Also tried confirming 2 work, then adding the 3rd circuit (on a diff breadboard). For the new circuit: using the same 2 pins from one of the two 'confirmed working' motors (same signal).

    Initially...
  16. Noise but no Movement with 3+ Steppers & TeensyStep

    For some unknown reason when I try to run 3+ motors with TeensyStep they simply make static-ish noise and don't move (or possibly M3 does poorly). I have tried the example Array but also run into the...
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    Correct, looking to take a new constant speed and...

    Correct, looking to take a new constant speed and accel/decel to it from whatever speed is currently running. Take your time, I understand.

    I likely will be focusing on it after Xmas thru Jan...
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    Thanks again for all your input. Just curious if...

    Thanks again for all your input. Just curious if you think you might have a testable library to play with :)

    At the moment i'm considering changing my creative direction to accommodate library...
  19. Awesome, excited to see it. Yep, its for an art...

    Awesome, excited to see it. Yep, its for an art installation ... 10-12x motors spinning at constant but precise RPMs to create an optical illusion.

    I'm trying to get beyond the phase of ordering...
  20. Oh wow, sure thing. More than happy to test it...

    Oh wow, sure thing. More than happy to test it out whenever you are ready. My coding skills aren't stellar but my application is pretty direct so should still be helpful.

    Thanks for being direct...
  21. Thanks for the quick and thorough reply. Ok...

    Thanks for the quick and thorough reply.

    Ok no problem on not being able to run 10, but is there any way to run for 1 motor to run at a constant speed, then accel/decel to a new constant speed?...
  22. TeensyStep - How to switch from 1 speed to another

    I'm stuck on figuring out how to actively choose a new speed and have my motors accel/decel from current to the new speed. The code below ramps up to the right speed, but on the new speed command it...
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    Thanks for the reply. Ooops, link to datasheet is...

    Thanks for the reply. Ooops, link to datasheet is fixed.
    Here's the datasheet (link) for it -- it says the 3.3-24v Control Voltage so should work.

    Here are my tests results:
    Teensy 3.2 +...
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    TeensyStep issue - Driver not working

    I have prototyped stepper motors running at precise speeds on an Arduino Micro and just found out about TeensyStep -- my mind is blown!

    I have 2x 400 step motors, and 2 different drivers that...
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