Getting motion from a stepper motor?

[Davek0974]

I will stick the Arduino on the list for looking at, i have been looking at those simple drivers but none have any ramp control and this will certainly need that.

[Clive S]

I will stick the Arduino on the list for looking at, i have been looking at those simple drivers but none have any ramp control and this will certainly need that.

You might be able to use it with the speed pot connected to the arduino to ramp the speed up and down

[cropwell]

The Arduino is well supported at www.arduino.cc There is a library of prebuilt code for stepper motor applications. If I get the time and enthusiasm I need to get down and do a stepper controller for various jobs. John S, some time ago, indicated to me the desirability of a rotary divider with programmable angles. The application in this thread is another good idea that could be programmed in a day (if I were up to speed, which I am not at the moment). I have got a raft of other projects on the list and probably not enough lifespan left to do them (based on current list !).

Cheers,

Rob

[Davek0974]

Thanks, looking now.

It seems what i want is not a stepper controller but a ramp pulse generator - the stepper controllers seem to want to run the motor themselves but i have a bigger drive to do that, this just needs to generate the step pulses in a trapezoidal ramp form.