Matrix user forums

Hi Guys,
another basic MIAC question,
I'm hooking up a small stepper to the motor outputs A,B,C,D
So I set the connections in the stepper properties as;
Coil1 PortD.4
Coil2 PortD.5
Coil3 PortD.6
Coil4 PortD.7
and have called the stepper enable at the start of the FC This sims OK. But I get nothing on the actual hardware.
Are these the correct ports for the motor outputs?
thanks, J.

Hello,

Yes those are the right pins for the transistor outputs.

As well as enabling the stepper motor you will also need to enable the transistor outputs by writing a logic 1 to pins F0 (A/B) and F1 (C/D).

This usually happens behind the scenes when you call the Output on or Output off commands.

Thanks Ben,
Ah, I see those pins now. Motors1 RF0 & Motors2 RF1.
I note that the later generation MIACs have a few more features on the outputs, such as the half bridges.
Is there any more info on these?

Hi,
The downloadable PDF datasheet is quite comprehensive.
Don't know if you have it?
See the MIAC resource page if not.
Suggestions for additional info welcome.
Leigh

for anyone playing along..
Very simple example but none the less, shows a basic direct connection of a stepper to MIAC motor output pins.
J.