Jump to content
  • 0

PMOD HB3 acting strange


project-2020

Question

Hello,

 

using PMOD HB3 with an arduino to run a DC motor backwards and forwards.

everything was working fine but now when direction pin is LOW and enable pin is HIGH  I only get a very small voltage going to the motor.

when the direction pin is HIGH and enable is HIGH I get 12v to the motor (which is what my external power supply provides).

is there something broken on the PMOD board?

 

Thanks,

Mark

Link to comment
Share on other sites

1 answer to this question

Recommended Posts

Hi @project-2020,

It sounds like you shorted at least part of the pmod HB3. In the reference manual for the Pmod HB3 here under section 2: Interfacing with the Pmod it states that the Direction pin must not change state while the Enable pin is at a high voltage state. If this does occur, one set of switches that are driving the motor will be closing while the other set is opening, allowing for the possibility for both sets of switches to be open at the same time, creating a short. 

thank you,

Jon

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...