- October 28, 2017 at 11:10 am #46835
the first “Big” project on the lowrider and after 20 minutes of cutting the right axis seems to loose its power. Simply dropping and destroying the workpiece by doing so.
As I’m troubleshooting, anyone have an idea what could cause it? vref set to around 1V (noticed skipping steps while being under 1V) and wired in series.
Never had this issue before, i think it could be a loose cable.
Any other ideas?
Thank you guysOctober 28, 2017 at 11:31 am #46836
What board, what drivers, what steppers? Where did you get 1v from?
1v on a drv8825 will go into thermal shutdown without really good active cooling and most stepeers will start to over heat as well.October 28, 2017 at 12:31 pm #46839
Sorry, should rember to post the Info next time!
Drv8825 and the same steppers as you have in the kit
Use an 8mm fan, never failed on me. But I’ll try on the voltage limit you suggested tomorrow and see if something fails.
Thanks for the thermal shutdown info, haven’t had this in mindOctober 28, 2017 at 1:02 pm #46841
I have a hard time running my steppers at anything over .7 and I am actually starting to set them lower. At 0.7V my steppers get to hot for my liking, I can’t imagine how they would feel at 1V, unless you are running them in parallel…if that is the case series is the way to go.October 29, 2017 at 6:24 am #46854
Thermal shutdown would kill both z motors though.
I would look close at the wires, tug then a little, and make sure they are mechanically attached.
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