Powerlolu

History

Based on STOMP GPL3 - http://li79-15.members.linode.com/projects

https://github.com/kliment/Stomp/blob/master/stomp.png

http://www.thingiverse.com/thing:40540

Communications

Great to hear from you. You can see more about our work at this TED talk. Our immediate need is 2.5A and up for serious stepper motors for CNC Torch Table Prototype II (prototype I was shown in the TED talk)

http://opensourceecology.org/wiki/File:Table_Frame.JPG

I would like this to be 1-off producible via CNC circuit mill, such as the open source Shapeoko (I'd like to know if you know of any better off-shelf open source variants of a CNC circuit mill? Jeff?). That is our preferred route for rapid prototyping, until the point where we stabilize a design. In any case, our goal is to make something designed for an off-shelf CNC circuit mill to enable full control of the technology by the user.

Interestingly, I looked up the driver chip and found this immediately - i appears to be open source -

http://www.thingiverse.com/thing:40540

With fully-assembled board available:

https://shop.germanreprap.com/en/Powerlolu-Stepper-Motor-Driverup-to-10A

and #kliment from #reprap IRC pulling code from the Powerlolu github repository - so he appears to be involved.

Can you help us design a prototype driver equivalent of the above that we can mill with a CNC circuit mill? It appears that the component cost would be about $20 per channel in single units?

Links

• Sourcing of complete board - [1]
• Chip from Digikey - [2]
• Open source driver from Cuteminds.com - [3]
• Source at https://github.com/fluidfred - to #kliment at #reprap IRC.
• $7 for chip - [4]
• Application schematic from Datasheet Zone - [5]
• Another homebrew circuit - http://www.youtube.com/watch?v=rNfdSBDoh48