I just built the Solsylva dual screw. I am using the Xylotex 3 axis 269 oz kit. I am mechanically inclined so that all went well, all axes move smoothly. I hooked up the xylotex board, read instructions for Mach 2, and get nothing but a whirring noise and fluttering motors. I thought I had the vref's set right, but as mentioned, I am an electronic idiot! I don't think I am using my cheap multimeter correctly... I thought I had the voltage right, but the voltage changed drastically with very little pressure on the screwdriver (in the blue dial thingy).
You can imagine my excitement and anticipation as my project nears completion... this is very frustrating!!! Please help.
-Matt