UncleDirt wrote:motiondave wrote:If you are planning a 240v motor setup, I cannot help. My work is still on 12v motors.
Hmm... does anyone else know something about this? First what i was thinking about is to use the signal from the jrk´s, that is normally used for normal wiper motors, and transfer it via a relais to the 240v volt motors. Or did anyone have another solution? Someone must have done an electrical circuit before.
As for jrks as a control board and using the outputs, I asked pololu about this already, this is the answer I got,
"Yes, I think you could use the signals from the jrk's two motor outputs to control another hbridge, but this would be an advanced task and would probably level shifting. When driving at an intermediate speed, one of the motor outputs will be driving high and the other will alternate between driving low and being high impedance, so you would need a pull-up resistor on that line to guarantee that its voltage changes. An oscilloscope would be very useful to determine that you are getting the signal you expect. You might need some discrete logic components depending on what the truth table of your motor driver is."For 240v control, you'd be best using a K8055, K8061 or tronic card to control 240v motors via inverters.
Scan the threads here, I remember someone has done this.