So it’s ‘running’. Couple questions for the veterans.
Tinyg controller. Settings through chili pepper
I had to set my mm/rev to 8.067 to get it to move accurately. This seem reasonable?
Anything over 1000 Will cause steppers to stutter. This seems really slow. Tried the pots on the tinyg but doesn’t seem to matter. What else to look at?
After doing a config update via chili pepper the machine will be reversed in the y till you jog it both ways. Any one else seeing this behaviour. On latest firmware.
I have never used chilipeppr to set config settings as I found it introduced unreliable timing issues on connection.
You should be able to get up to 3500mm/min though I advise sticking to 3000. You should check and recheck your machine for squareness and alignment to get up to those speeds.
The mm/rev sounds about right I think I have something similar.
Mine ended up being about 8.08ish. It was different on all three axis. Tensioning and squaring everything should fix the stutter. I ended up with the pots a little more than half way. I am not sure if I have them right yet but I can run 1200 without problems. I was running faster but I had to be dialed perfectly. Slowing down a little didn’t cost me much in machining time. I recommend playing as fast as you can while setting up and then picking a conservative speed for production.
I have the issue with skipping on the x axis (one stepper) as well so not sure how I’d square that up. Tension seems pretty good on the acme screws as well. Bongs when flipped. When everything went together the wheels weren’t tight enough to hold it against gravity.
@Michael_Dillon It is easy for the two motors to get out of sync if you crash the machine or when first setting up the machine. I am sure there are many solutions. I’ll give you mine and you can adapt it as you see fit.
Draw a line or use the front edge of the table as a reference. Using a large framing square square one side. Screw it down front and back. Run the y-axis to the front. Make sure the distance from the aluminum plate with the acme bearings to the carriage is the same on both sides. (If it isn’t turn one motor by hand.) screw down the front. Run the y axis all the way to the back and screw down the back.
Test by setting the speed to 1200 mm/min and scroll back and forth a few times. Make sure you end up square after the test by measuring again.
If you make the extrusions exactly the same length you can check for square by matching the diagonal lengths.
