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Motor Control
Posted: Sun Nov 04, 2012 6:27 pm
by bluesmokeclub
Have a Kenmore sewing machine motor marked 110/120/Volt, A.C.-D.C. 25/60 Cycles, 1.2 Amps. Want to control speed with Arduino. Any thoughts?
Thanks.
Re: Motor Control
Posted: Mon Nov 05, 2012 5:51 pm
by Ross Robotics
How is this related to the Sparkfun website?
Re: Motor Control
Posted: Mon Nov 05, 2012 6:14 pm
by MichaelN
As implied by codlink, it would be a good idea to move this to a more relevant Sparkfun forum.
Anyway, you should be able to use a leading-edge dimming module to control that type of motor (presumably a "universal" type motor). For manual control you could use a cheap dimmer from the hardware store, but for Arduino control have a look at this:
http://www.inmojo.com/store/inmojo-mark ... er-module/
This was discussed here:
https://forum.sparkfun.com/viewtopic.php?f=5&t=32954
Re: Motor Control
Posted: Tue Nov 06, 2012 9:23 am
by n1ist
The Inmojo board has many design issues that render it unsafe. Hopefully they will respin it and fix the problems, but until then, I would go with a safer layout.
Re: Motor Control
Posted: Tue Nov 06, 2012 2:12 pm
by MichaelN
n1ist wrote:The Inmojo board has many design issues that render it unsafe. Hopefully they will respin it and fix the problems, but until then, I would go with a safer layout.
Yep. Since the schematic is provided, it would be pretty easy to re-spin it and get some cheap boards made at Itead / Seeed Studio.
Re: Motor Control
Posted: Tue Jul 30, 2013 1:58 am
by unexpectedly
The motor is probably inductive (meaning its speed is determined by the AC cycles, 60 hz, and the number of windings). Changing power to it changes its power output but not its speed.
You'll need a DC motor and a motor controller board to vary speeds. The inventor's kit has small DC and servo motors to play with and get the easy concepts down.