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Member Since: January 12, 2011

Country: Canada




  • This CNC project of mine is gonna take longer to finish than Noah took to build the ark... Anyway, here is what I did that cleaned up the inputs - 6 x 0.01uF caps to filter the step & dir line for the 3 axis. I'm still only using 12V - have not got brave enough to up it to 24V http://www.flickr.com/photos/flyinglow/8091755406/in/set-72157625214365376

  • Weak microstepping - looking for ways to improve a less than ideal situation.

    I have an old BIG (physically - http://www.flickr.com/photos/flyinglow/8117734883) stepper being driven by the EasyDriver. The plate lists the stepper as 2.9V / 3.1A, so I'm assuming a just under 1 ohm / coil. The motor is a 6 wire and I am not using the commons, so can I assume then that I have an almost 2 ohm / coil?

    I'm powering with 12V from a PC power supply. I believe the supply voltage to be between 11 & 12 V (closer to 11).

    It appears that the micrstepping is not as smooth as I think it should be. There seems to be period 'big' steps between small steps. The result is a bouncy ride when moving slowly.

    I'm not finding much difference regardless of which way I turn the current control.

    (my cnc that is being driven by the EasyDrivers - http://www.flickr.com/photos/flyinglow/8106467834/in/set-72157625214365376/)

  • I'm sure most have done this - but I'm proud of my recent discovery. I now use a breadboard to hold header pins while soldering them in place. Here's how I did it (inadvertent shameless plug for the EasyDriver from Sparkfun) http://www.flyinglow.ca/flyinglow/2012/02/shop-tip-soldering-pin-headers.html

  • In Winnipeg (home town of Princess Auto {www.princessauto.com}, but I mentioned them already), I can think of 4 places where your products might do well.

    1) Active Electronics (active123.com) - the place I go to for bits and pieces - way better selection and price than RadioShack / The Source.

    2) Toad Hall Toys - The store in Winnipeg for model railroads. Lots of educational toys as well.

    3) Eliminator RC (eliminator-rc.com) - The car centric R/C store in Wpg. They carry all things R/C, but seem to focus on the cars.

    4) Cellar Dwellar (cellardwellerhobby.com) - The airplane/helicopter R/C store in Wpg. Again, they carry all things R/C, but seem to focus on the birds.

    There are probably others.

  • PrincessAuto! The definitive tinkerer store up in the Great White North!

  • Actually that is exactly what I do, and it works for me.

    So far all I'm doing is full stepping, but I have had no issues with stepping. Does it become a problem if 1/2, 1/4, etc. stepping? or if trying to get full torque out of the motor?

  • Same here. I know sometimes I miss a character on the captcha and it gives the same response as when I know I got it right. Only if I really mess it up does it nag me about messing up. Either way, the progress bar never changes. It's throwing me off my game.

  • Here's a (silent) video of the problem with electrical noise - http://www.youtube.com/watch?v=o0iTuKYLWIc

    Looking for advice on how to solve. Thanks!

  • Since upgrading to a bigger router, I am having electrical noise problems with the EasyDriver. It is sporadically stepping up and down whenever the router is turned on. I have the EasyDriver located right beside the stepper, and I'm using about 4 feet of Cat5 to deliver the Step and Dir commands direct from my parallel port. Any suggestions on noise filtering caps, grounds, shields, etc? Or should I shorten the command wires and lengthen the drive / power wires?

  • 24V challenges - I am able to run my stepper with this controller quite well with a 12V PC power supply. My problem is when I apply 24V to system to try and get more speed out of the stepper, I get erratic behaviour. Typical behaviour is missing steps or erratic stepping more so in one direction than the other. At first I realized it was because I had not tied the common from the 24V to the common of the computer's parallel port. Once connected it improved, but it is still unreliable. Switching back to 12V and all is smooth. Any suggestions?