At 10:06 AM 3/28/2010, you wrote: >Hey Guys, > >Been testing my machine and am having trouble with random movement of each >of the axis. I believe the problem is because the input to my homemade >driver boards is high impedance and the STEP and DIRECTION lines are not >terminated. Any voltage spikes or EM interference in the immediate area, >like the laminate trimmer that I'm using as a cutting tool, seems to cause >the problem. > >To supress (hopefully) the problem, I figured I'd just put termination >resistors on the breakout board. So... I'm guessing the value of the >termination resistors would not be critical but, surely, there is a correct >value. What would be the correct value for a resistor between the STEP / >DIRECTION signals and Ground? > >I'll also add some decoupling caps to the Power Supply lines to stop any >potential problems there. > >TIA, Steve Robertson >steverob [at] ccvn [dot] com
Steve, On an unrelated note, your computer time on the computer you sent this email is way off, somewhere into the future. I'm reading this at around 0745 on the 28th, and it indicates you sent it about 2 1/2 hours from now... ;-) Also reading the replies, I noticed some folks had replied last night around 9:30 PM, so it sounds like you 'pooter time is about 12 hours or so off, possibly without DST applied. Mark ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
