Sanyo Denki Stepper

Hi There,

Just thought I would share a bit of info that may help.

I have a Sanyo Denki stepper motor, type 103-550-0146, which I wanted to try in a project but it did not seem to operate as it should in that when I connected it to the shield in a conventional configuration all the motor did was oscillate back and forth at what I assume to be the stepper angle of 1.8 deg.

I had connected it to the shield according to the wire colour code as seen in other Arduino projects i.e. Blue Yellow Red Orange.
I manage to get it working as I believe it should by switching two wires so now the order is, Blue Orange Red Yellow.

I assumed the colour code was universal, but maybe not?

Image from Original Post so we don’t have to download it. See this Image Guide



The colours of the wires are meaningless unless you have a datasheet for a specific motor that specifies the colours. You should always measure the coil resistance with your multimeter to ensure you know which wires belong to each coil.

...R Stepper Motor Basics Simple Stepper Code