Reasonably Priced 100A Motor Controllers

I have two of these boards and they both have the same result no function on channel 2 channel one works fine. I’ve even tried a second Arduino i’ve also tried moving the pins from channel one which works to channel 2, and it will not work

Maybe your controller has same issue? https://www.xsimulator.net/communit...0a-motor-controllers.17638/page-9#post-258442

Also make sure that the limits of the pot does not turn off the motor. Check in SMC3 config tool it motors are on. Also tripple check ground connections.

Yep mine had the same problem. Soldered in a jumper wire and it’s all good now. cheers

i ordered up some new drivers for a different project and guess what channel 2 is not working !

Sadly it appears somebody has robbed the quality control failures and is distributing them to suppliers !

however the fix is pretty straightforward

we drilled the through hole and fitted a copper wire / rod

Its so sad that a great little driver board has been a target of dishonesty

I have two of these controllers and they both suffer from the same issue that the controller for some reason will go the opposite direction for a split second and cause hitches in the motor rotation. The LEDs on the board that indicate direction (green for forward and red for reverse) show the issue well where let's say you're going in reverse so the red LEDs are on, but then for a split second the board will turn on the green LEDs (while the red LEDs are still on) causing the motor to momentarily hitch, and the blue power LED also kinda blinks off in that same time frame too.

Does anyone else have this issue or has found some kind of solution to this issue?

Do you have a problem as above ? Is there continuity across both sides of the board ?

There are no continuity errors from what I could tell, although I hastily probed it. I would send a video to better show what's happening but I'm a new user so it's not letting me at the moment lol. But the motors will work fine until the board for some reason sends the opposite direction signal for a split second, and given that this has happened across two boards the fault may be on me with my PWM or something or just something with the boards itself I need to fix.

I'll also note that it's definitely not the motors as I've tested this controller with multiple different motors and the issue is present no matter what.

Check you have the correct vesion of code and wiring

I also forgot to mention that I'm actually not using an arduino to program the board, I'm using an STM32 dev board to do it, which I know is annoying to debug since it's different, but when I was using a debugger to test the programming and variables they all matched the expected behavior and updated correctly so I don't believe the code logic is the issue. I also tested it by putting the control pins to either 3.3V or GND (e.g. A1.A2 = 1.0) and the issue still occurred. I thought it might be the PWM signal but I probed with an oscilloscope to check the waveform and frequency (15 kHz) and they all seemed stable and reliable. Unless I'm missing something crucial I feel completely lost as to what to do here as the wiring is all correct too.

https://streamable.com/fyazwa

Here's a video link to what's happening as well. You can also hear the motors hitching in the background, and watch the LEDs closely.

Check you compiled the code with the correct driver variables