Is it possible to directly connect a 12V power supply delivering 30A to an Arduino Motor shield?
We want to pilot 2 different 12V motors 2A each that will be managed by the motor shield.
Second question:
What happens if the Vin and Gnd are inverted on this motor shield (GNd being connected to the + 12V)?
I'm asking this because a group of newbees did it recently and I think they burnt the motor shield. There was some burnt smell around and the card seems to be dead.
I will check its health next week but I'm not confident at all... I think that some capacitors burnt there...
The larger capacity supply can be used, the board/motor will only draw the current that is needed.
Reversing power/Gnd often damages parts permanently.
Which motor shield? Schematics are often available online, they can be checked to see if any reverse polarity protection was added. Sound like not in this case.
Hi,
With supplies like that 30A and you only using 4A, put a 5A fuse in line before you zap something else.
Does the power supply have adjustable current limit?
