Is it possible to control a Jaguar with a potentiometer?

[Hugh Meyer]

Here is a link to what we use:

http://gadgetgangster.com/find-a-pro...projectnum=206

You need to lower the value of the output current limiting resistor then it works great.

I suggest you add a current probe to your test rig so you can measure current while you are testing your systems. A 10 gauge wire 12" long works perfect. Use that wire as a shut, it will measure 1 millivolt for 1 amp. There are several threads here that discuss that scheme. Do a search for stangsense.

Here is a photo of our rig that can control two motors. In this photo the motor is running and drawing 3 amps. By having this information you can know that your motor is running within the correct range and that the magic smoke will remain.

-Hugh

[Gdeaver]

I have found that a Pololu RC controller to be handy for some robot testing.
http://www.pololu.com/catalog/product/1352
You could do the same thing with an arduino, but the control application that you would run on the laptop makes it easy to use. Can also read analog 0 to 5 volts so it can double as a sensor checker.