Hi all;

I'm hoping someone may be able to help me with my Arduino/Pure Data project? Please bare in mind I'm very very new to Arduino and the world of electronics.

I need to be able to control the speed of a motor while using Pure Data with Pduino. My initial problem is getting the motor working at all. I've 2 small motors (only need to use one though) and both of them have 2 input pins on them, but I've no idea what each of them are. All the tutorials I've seen involving motors, they all have 3 pins; so I'm really unsure of how the wiring should be. For example http://arduino.cc/en/Tutorial/Knob

Secondly I'm not 100% on what I'd have to do in Pure Data in order to control the knob. I'd like to use an [osc~] or [phasor~] object to control the speed of the motor.
Can anyone help me here please?

I also have a sensor triggering audio, so that takes up a couple of pins, but I still have plenty.

Thank you

Have you tried searching for the datasheet of your motor? Most of these electronic parts have datasheets floating around the web somewhere which will tell you what the polarity of the pins are and such.

Are you using motor or servo motor ? If you want to control speed of a motor, it seems that you are talking about a simple motor. The servo motor has 3 pins : on for 5V, one for Ground, and one to output pin (signal to control the angle). On your motor, the 2 pins are V+ and ground. how much voltage your engine could take ?

If you run a 5V motor, I think you can connect it straight to a PWM input pin. From there, you should be able to control the pin with Pduino.

Please send a pic of your motor if you want more help.

Otherwise, check links below:

https://sites.google.com/site/arduinosoapy29/motor-speed-controller

http://www.instructables.com/id/Simple-2-way-motor-control-for-the-arduino/