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Type: Posts; User: jon

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  1. The indexer is working beautifully, controlled by...

    The indexer is working beautifully, controlled by a little arduino. After 25 revolutions (625 of the stepper) the mark lines up. There appears to be zero backlash, I will need to confirm that. Next...
  2. Here is the gearbox unit assembled and ready for...

    Here is the gearbox unit assembled and ready for testing on Tuesday. I have a friend who has managed to get another driver and stepper combo running off of an Arduino board. We are just getting that...
  3. It took a while to finally get back to this...

    It took a while to finally get back to this project, here are my prototype pulleys. The frame should be a snap to make next and I'm almost to the stage at which I will wire it up to the control box...
  4. Ok I think I just figured it out; 500 steps per...

    Ok I think I just figured it out; 500 steps per revolution, 360 degrees per revolution= 500/360= 1.3889
    1/8 steps in shopbot programming= 1.3889 x 8= 11.1112
    25:1 reduction= 11.1112 x 25= 277.78
  5. I am assuming that those values are specifically...

    I am assuming that those values are specifically for my 25:1 reduction set up. If I notice some slight error in rotation position I would probably need to adjust those values I am assuming. Can you...
  6. Gary, thanks again for all the info. You have...

    Gary, thanks again for all the info. You have saved me a bunch of time with this project. Yes, I was talking about the driver and motor combo that used to be mounted on my machine, I am going to use...
  7. Yes this is the next hurdle to jump, once its all...

    Yes this is the next hurdle to jump, once its all hooked up. I actually have no idea of how to even operate it. I hope that I don't end up smashing it into itself etc. I have no real commercial use...
  8. Very cool! So what you are showing me there with...

    Very cool! So what you are showing me there with that chart is that my resolution is actually double of what I had calculated.
  9. I'm using shopbot programmed driver and asm911...

    I'm using shopbot programmed driver and asm911 motor for this. I think there is an increased resolution with that set up
  10. http://www.talkshopbot.com/forum/attachment.php?at...

    http://www.talkshopbot.com/forum/attachment.php?attachmentid=28689&stc=1http://www.talkshopbot.com/forum/attachment.php?attachmentid=28690&stc=1
    Thanks to Gary Campbell and G Burkhardt I think I...
  11. Ahhh, thanks for the clarification there Gary, no...

    Ahhh, thanks for the clarification there Gary, no I had not done the math. 0.05" is totally unacceptable. I am in the speculation phase of my design. I suppose I will follow yours and G's advice of...
  12. Well I don't mind that you don't have a bot, I...

    Well I don't mind that you don't have a bot, I have respect that you made your own CNC! Also very nice 'life hack' on the gear dxf download, I'll be sure to try it out and then should purchase my...
  13. That's a nice looking pulley G, what type of...

    That's a nice looking pulley G, what type of motors do you have on your bot?
    Thanks for the advice to you and Gary. I will think about this further, maybe a clamp placed on the pulley blank during...
  14. Using my asm911aadc2.65v servo motor to make timing belt pulleys

    Hi folks, I have an idea to machine my own timing belt toothed pulleys using my Asm911aadc2.65v stepper motor and driver combo. I will have a timing belt sourced and will gauge the pitch of the teeth...
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