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Hi
I've just been looking on the web to see if I can find some more information about this unit, and I can't find much that may help.
So a couple of questions for you, and with the answers, I might have some suggestions. My apologies if my questions sound like idiot ones, but, I have no idea what level of knowledge you may have about electronics. I am not wishing to insult or offend.
Do have and understand how to use a multimeter?
Do you know if the motors are simple DC motors or stepper motors?
If you don't know, can you tell how many wires are going directly into each motor? (I'm guessing two for a DC motor or four for a stepper motor)
You are using a tip positive power supply. Are you certain that is the correct way around?
Do you have the battery part of the system? I think this is shown in you photograph.
Philip
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