I am using this controller in a unicycle robot and have everything working properly. To get a little tighter control on the steppers, I have written some controller code to interface directly to the STEP and DIR pins on the board. After calling exitSafeStart() and energize(), the motors are energized as expected. With the DIR pin held low and a square wave applied to the STEP pin, I get no motor steps. The logic levels are 3.3V (Teensy 4.0). Any ideas? Thanks.
Have you configured the Tic’s input mode to “STEP/DIR”? Could you post a copy of your Tic settings file? You can save a copy of your settings file from the “File” drop-down menu of the Tic Control Center. Posting a simple but complete program you are using to generate the square wave might be helpful too.
Also, could you post pictures of your setup that show all of your connections?
Brandon
Yes. It was not in the STEP/DIR mode. Since I couldn’t see a way to set this through the API, I mistakenly assumed that it was already active. Sorry for not consulting the Tic reference first.
1 Like