Collapse all Expand all Print all In new window Interfacing UK1125 and UK1130 motor s

[pghalverson]

Hello,

I am a high school teacher and my students are building a solar powered car. We got two motor speed controllers, the UK1125 and UK1130, one to handle steering and one to handle motor speed.

The problem is that I don't see how we can interface these controllers to a computer.

I had assumed that these controllers worked in a way similar to other motor controllers such as the TI Jaguar, which accepts a PWM control signal. But can't see how the devices can do the equivalent thing. Can they? Do they need to be modified? Is there more information on the circuit available? What is the chip on the board? I would like to get a datasheet for it.

Sincerely,

Peter Halverson

[RDEngineer]

Peter,
The UK1125 & UK1130 are kits from Canakit and we simply resell them. Unfortunatly I don't know what they use for control. I suspect they simply use an analog control voltage to change the pulse width of an oscillator such as a 555 timer but that's just a guess. I suggest you contact then directly. THeir Web site is www.canakit.com and the phone number is 1-888-540-KITS. We don not have any Ramsey designed products tio do what you want either.

I just looked at their sight and they have the manual available which gives the basic operation but there is no schematic or parts list provided. We also do not supply schematics in our on-line manuals for obvious reasons. From the PCB layout it looks like they may be using a small micro controller to generate the PWM but that's just a guess. Sorry I can't be of more help.