MM die after I

This is my first time using arduin and mm I'm using smc3 to control as of now I've killed 2 mm just by turning the 10k pot I must be doing something wrong I did get one to read 11v on A1 to B1 but as soon as i twist pot the mm dirction light lights up and then mm dies any help would be geatly appreciated

Ok here's a pic of how my 10k pot is wired +5v from ard and mm to pot I'll post some more pics after we determine this is right it's kinda of hard to see with all wired thanks for help

Hi, I don't think that the poti causes the issue. You didn't wire the control pins so the poti does nothing. There could be more reasons, first the MMs were DOA or the PSU is defective or the polarity was changed by accident.

The other 2 mm I had them wired fully that quit
I just wanted to show the pot wiring by itself then I will connect rest of wires befor I try it I will use another psu and snap another pic

ok, but honestly you cannot burn the MMs on the 5V line. So the issue is somewhere else.

I gotcha i have 2 more mm's on hand and some more ordered will swap psu tonight and check them thanks for the help

I swapped psu and mm are running the only problem now is trying to find some that are not faulty out of the 2 I tried are both out putting less than 12v
The first one was 4v on both sides and the other was 5v I have more on the way today so maybe I'll have better luck with those thanks for the help

Obviously DOA. If you ordered from a serious vendor/dealer money is back guaranteed.

Question once you fin good ones what kind of life span have you been getting out them with keeping them cool I plan to use 2 dual boards per motor I know different set ups and settings will vary life span just curious tho cause this seems to be a good set up for as bang for your buck

My MMs are still working after more than 2 years of excessive driving. If they work (from the very first beginning) they will not fail (mostly lol).

That's good to hear