This board is perfect for any robotics project that needs stepper motors like a DIY CNC, laser engraver, or 3D printer. Read more
This project was successfully funded on July 16, 2011.
Domo*pes: The remaining $20-130 rewards will be shipped out Monday. Thanks to all the buckers, there is now an all-in-one I/O and stepper driver board. It simplifies motor projects by not having to connect and solder LOTS of wires. By using USB there's no need for an ancient pc for its parallel port. Although any software that generates gcode should work we have only tested it with free software like SketchUp and Inkscape. We hope to see the Domo*pes run on Mach3 and EMC2. The Domo*pes board was designed with through-hole components when possible to easily replace parts but after soldering we see why the big companies do all surface mount. The schematics and board layout will be uploaded next Saturday. We will soon be adding personal blogs for you to document and/or share your projects.
whats new: So as of now we are focusing on the CNC rewards by tweaking the design files and testing the new components that were added. When we first designed the CNC, the stepper motor was just mounted on the side. While the main screw and stepper shaft were coupled by a rubber hose. A rubber hose can lose accuracy by twisting so a solid coupler was designed out of four round sections of MDF. When combined it made a solid coupler. A stepper mount was also designed. It's posted on the forum. Having the extra room from having a mount allows users to upgrade the coupling to a high end coupling if desired.
rotary tool and mount: Instead of designing a mount for the rotary tool, the rotary tool was stripped out of the case and integrated in the CNC. Getting away from a bulky look and giving it strength. The $20 rotary tool has its limitation that the kit comes with so we will be including a blank mount that allows upgrades to the more powerful rotary tool with flex shaft that the $1,000 CNCs use. They range from $60-70 and will allow the CNC to cut harder materials.
drive screw system: Six months ago, we designed a plastic part that has 4 screw holes on the back of each axis and a main holder for the hexnut to sit in as a plastic top snapped in to keep it in place. A 3D printer could easily make hundreds of these holders. We don't have a complete 3D printer yet and getting it made through a company costs $8 each axis + shipping. No discount for bulk. It added cost to the CNC. It works really good but to drive the cnc cost down we redesigned a more economical design. The revision is an interlocking sandwich made from MDF that was integrated to the CNC, simple but effective. Works just as well.
precision rods:. One minor thing I have to tweak is that the precision rod that was used previously is always understocked. So when I ordered I went with a more standard size that they have plenty of.
May or may not be added during the revision raising the cutting area 1/2" higher and angling the sides so it adds more curve appeal. It depends because I'm only giving myself 1-2 days to do revisions and going straight to testing. Then start filling the CNC rewards. Will be doing what we have done which is ship as we go, it seems to work.
As this is a new experience, we appreciate all the input we've received and guidance throughout the kickstart!
John & Amy