I recently found that the Tiny G does does not support ALL Nema 23 motors. I bought my nema 23’s from Open Build that are rated for 2.8A/phase. The tiny g is only rated for 2.5A per wind. Are my Nema 23’s compatible with the Tiny G. I am still having issues with x and y axis moving jerky in jog. I copied the setting Thomas Shue posted on the Open builds OX and still had problems.
I am assuming you are referring to TinyG v9? I dunno what stepper drivers it has (I could not find any detailed info on what they where at the time) but I did read this https://github.com/synthetos/TinyG/wiki/Stepper-Motors-and-Power-Supplies and say the 2.5A rating.
This is one of the reasons why I went with a Due running TinyG2 with external drivers that can handle (exceed) the stepper drivers I have.
This has nothing to do with tinyg or its drivers. It’s actually the way chili pepper does jogging. You are basically sending a ton of little commands that tinyg plans through and then plans a deceleration move before getting another line in behind with then starts the whole cycle over again.
Yeah… It’s not a tinyG issue with respect to having 2.8a steppers. I used nema 23 2.8 amp steppers on my last build. Also the only way they draw 2.8a is under load. How do you have the current pots set? As to the chilipeppr program. Watch the chilipeppr from scratch video with John Lauer. He shows you how to set up the buffer to define how many lines of Gcode gets loaded at a time. I think that may fix your problem…
Riley’s right. The jogging with the keyboard takes into account the “Move By” values. So, can you click on the 10 in Custom to get each move to be 10mm. Then try jogging on the keyboard and you’ll see it’s smooth. Or, do what I do and hold Shift down while jogging to get the 10x accelerator in action.
Phil B: Welcome to the rather confusing world of step motor specs. Depending on you depth of interest, a Search on “Step Motor voltage and current ratings” will provide several hours of good reading. Step motor drivers source pulses of current up to a set limit (in tinyG, the pot on board sets the limit). But the load presented by the motor winding is variable, depending on the torque it must generate to move the rotor (and the machine). Pursue this if interested, the dynamics of DC motors are complex.
