Steppers on MINI

Steppers on MINI

paulsm updated 4 years, 10 months ago 2 Members · 4 Posts
Hardware
paulsm

Member
June 12, 2020 at 12:09 pm

I just trid this simple:

digitalWrite(pin1, HIGH);

digitalWrite(pin2, LOW);

UNO does give LOW, but controllino does not, is that a malfunction or that is how it works?
mr-controllino

Administrator
June 12, 2020 at 6:42 pm

Hello PaulsM,

It is working properly. The “problem” is that the CONTROLLINO MINI, MAXI, MAXI-A and also 12 outputs of the MEGA are High-Side Switches.

Imagine a switch … that is ON and OFF. A switch does not force the output to GND. It simply disconnects.

So you can only drive a unipolar stepper motor with it. So no 4 wire stepper will work. It only works with the 12 half bridge outputs of the MEGA.

And if you use a stepper motor directly with CONTROLLINO … please make sure it has a high internal resistance. Because CONTROLLINO only has voltage outputs … there is no special current limitation.

regards

Marco
paulsm

Member
June 13, 2020 at 5:54 am

Thank You, Marco

Viewing 1 - 3 of 3 replies