How to achieve pwm with picoborg rev

Submitted by popeyesfx on Fri, 07/04/2014 - 14:34

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Hi everyone
Was just wondering how to achieve variable motor speed. Normally i would use pwm ( pulse width modulation ) via software, but i note that you can set the motors power level on the picoborgrev.
Does this achieve the same thing. I am using a raspberry pi to control a miniture fairground ride and want to ramp the motor speed up and down to simulate the ride starting and stopping. Is it just a case of stepping through the motor power over a given number of seconds.
Cheers for the help.

piborg's picture

piborg

Fri, 07/04/2014 - 19:54

Yes, the power level on the PicoBorg Reverse actually controls a PWM on the board itself.

You are correct about the speed as well, stepping through the power levels should ramp the speed up / down in the way you are expecting.

popeyesfx

Sat, 07/05/2014 - 08:58

Thanks for the reply, just what i need

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