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It works, mwahahah!!

Last night I hooked up a Teensy++ micro-controller, running my G-code interpreter firmware, up to a stepper motor driver and stepper motor from Makerbot, powered by an ATX power supply. I ran some g-code from my CAD through it.

We have Motion! And the motion is correct for all three axes!

*ahem* "MwahahahahahaHAHAHAHAHA! It's ALIIIIVVVE!"

Now, I just need to make a framework to attach the stepper motors to, to drive the three axes of a proper motion control system. I'm currently designing up something on my CAD.

Because I can't ever leave well enough alone, I'm designing something new, instead of using a publicly available design. I want to see if I can make a 3D plastic extrusion printer mostly from parts you can buy at your local ACE hardware store, and maybe some from a bicycle or auto-parts store. The CupcakeCNC design from Makerbot is neat, but kind of limited in the size of parts that it can output, and it seems to suffer from the steppers resonating with the wood, making it louder then I'd like.

I can do better. :)

Comments

( 6 comments — Leave a comment )
maskedretriever
Sep. 26th, 2009 08:03 pm (UTC)
Yay! That is super-awesome!

Two things!

1: If you upload the designs of your repstrap to Thingiverse, we will sing your praises quite loudly. The parts lister especially would come in handy showing off your percentage of easy-to-source parts.

2: The MakerBot you heard at my place was poorly tensioned and badly lubricated, requiring me to turn the power up on the motors more than should be necessary. This doesn't solve the basic problem of the MakerBot being essentially a guitar when it comes to vibrating steppers, but I thought I'd mention that what you saw back at my lab was definitely louder than advertised.
revar
Sep. 26th, 2009 08:32 pm (UTC)
I definitely plan to upload the design and code, once I get a final running machine.

Hee. Yeah, okay, the tensioning and such explains a bit, but I still want to do something about the resonation of the thin wood.
maskedretriever
Sep. 26th, 2009 09:01 pm (UTC)
Like I said, it's a freakin' guitar. X3

Can't wait to see more of this project!
revar
Sep. 26th, 2009 11:24 pm (UTC)
I love the rev2.3 stepper drivers; the chips don't get hot at all!
wingywoof
Sep. 26th, 2009 09:25 pm (UTC)
Celebrate with a new TMBG video!

revar
Sep. 26th, 2009 10:42 pm (UTC)
Hee. TMBG's latest stuff is awesome.
( 6 comments — Leave a comment )