Question on how this motor works.

[machineman9]

I am a bit bored so I am thinking of making myself some custom hardware/thing (currently it seems to be making a turning platform for a webcam so it can be controlled in direction)

Anyway, I have some motors from an old remote controlled car... they turn both ways. They have 3 wires, and I don't quite get how to effectively make them work.

One motor, 3 wires. 1 black, 1 orange, 1 green. Green and Orange are obviously there to seperate them from the other motor, and I would have thought the black be the negative.

I put a 1.5V battery to it, just to test.

Negative battery to black wire and positive battery to orange = no motion
Negative battery to black wire and positive battery to green = no motion

Negative battery to green and positive battery to orange = motion
Negative battery to orange and positive battery to green = counter motion.


Any thoughts what the black wire is for? They all seem to be linked up aswell.


Cheers

[BigTruck]

I'm gonna take a swing at this and say ground.

[machineman9]

The orange and green are both negative and positive... Depending on which is which results in a different direction of motion.


Someone said that it could be a speed controller... would this make more sense?

[BigTruck]

That could be, like if you hooked a dial up to it and it regulated the amount of power going to the motor, thus controlling the speed?  

[machineman9]

Yeh I suppose that could work. I have currently put a variable resistor on it, so it has speed control without this third wire (as at the time I didn't know what it did)

[Mushroom_Farmer]

I would think it works as a 3-way switch where when one is on it cancels out the other.