Building a Penny Pusher Arcade Game

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Bluechip:

--- Quote from: raynerd on August 02, 2013, 06:38:55 AM ---Hi guys, thanks for the interest!!

I just thought pwm would give me control of the speed as I'm not sure exactly what speed will work best. Anyway, taking your advice, 9v seemed about the correct speed. Looked in my box of old supplies and to my luck 9v. 1500mA. One of those small Chinese made supplies. Anyway, connected it up and it moves at about 1/2 RPM is there really jurky fashion!!
I must be making an obvious mistake :-(

--- End quote ---

Possibly because it's a switched mode device, never intended to drive a motor.
It may well be going into over-current, shutting down, coming back up, over-current, shutting down etc. etc. ad nauseum.

I assume you are aware that Chinese milliamps aren't as big as real ones ??

That motor, at switch on, is going to look pretty damn close to a short circuit ... they all do.

Dave BC

raynerd:
Yep, I did think the answer would be something like that.

Now to try and find a 7-9v supply suitable! :-(

vtsteam:
How about a 6 volt transformer, a bridge rectifier and a big capacitor paralleled with the output? Good old fashioned tube (valve) filament power supply. 3 parts.

vtsteam:
Okay, okay, add a fuse and a power cord and a box, etc.

-or-

I did test the original controller you were interested in, made a video of it running, and gave you speeds and current draw as requested.

And as you can hear in the video, no hum. Just gear noise.

NeoTech:
Those last pesky details.. :lol:

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