Currently I am using a DRV8825 stepper motor driver with a Teensy 4.1 which is working well and now am converting over to the Sparkfun Prodriver with the TC78H670FTG and have a couple of questions.
- Setting Vref? On the DRV8825 I set have to set vref but I did not see anything in the hook up guide on how to do this. However looking at the datasheet it looks like Current = 1.1 x Vref, so Vref = Current / 1.1. Assuming that for a 1amp per coil stepper that vref should be about 0.91. Measure vref on the board is showing about 0.93 volts which seems a bit high. Measurement is done just 12v applied to the barrel jack. So can I just adjust this with the pot?
- While libraries are nice and convenient it hard to learn whats under the hood you might say so I rolled my own. Can I use the board without using your library? Are there any gotcha’s I need to know?
- How do you control speed? or moveto position etc
Thanks in advance
Mike