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stepper motor help ?'s.

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AlienInferno:

--- Quote from: TopJimmyCooks on July 22, 2011, 09:20:15 am ---To be clear, you want to build a machine that accepts a dollar bill, returns 4 tokens via a rotating mechanism actuated by a stepper motor/motor controller, and does not involve a PC?

--- End quote ---

Ideally I would like it to take coins as well.  But yes that's basically it.

AlienInferno:
Thanks drventure and crashwg.  I'll check those out.

NiN^_^NiN:
It could be made easier if you didn't care if the dollar bill or 20 dollar bill just spit out the 4 coins.

I had thought up a design for a manual change/token release

I has some PVC pipe a bit bigger than the size of the coins then added a small flat piece of plastic with two bolts on the side

The end of the PVC pipe had two nuts glued on and the bolts screwed into them to get the right hight so when coins were placed in the pipe only the width of a coin would sit on the flat piece

I had for tubes full of coins and a spring so when you pushed a button it moved a small bar that pushed the coins along the flat piece of plastic till it would just fall off then when released the spring shot the bar back.

You could do the same thing with the bill accepter just use a 5-5-5 timer kit at any electronic store so it spins the motor in the bill acceptor then kicks out 4 coins from the tubes.

Hopefully that actually makes sense   

AlienInferno:
I think I will use the Arduino that drventure suggested.  I did some research on it last night and found a couple posts on people getting bill acceptors to work with it.  Shouldn't be too hard to do once I get my hands on one.



My thinking was I can have some PVC as holders for the coins similiar to what you did.  Except instead of having the tokens pushed out by a bar I can have one (thinking two possibly) round discs with 4 holes.  One coin would fit flat in each hole.  The Arduino could accept the input from the coin switch (for a single token with coins) and also the pulses from the bill acceptor.  It takes that input and turns on a small motor to turn the disc a set number of seconds.  There would be enough time for each input to allow the set number of tokens to fall.  As it turns the hole in the disc would turn with the coin until it is over a chute and drop it into a metal cup.  So if it was an input from the coin switch it would turn enough to drop one coin.  If it was the bill acceptor it would turn enough to drop 4.  My bill acceptor will only accept one dollar bills (not the new 5's, 10's or 20's) so 4 will be as high as I will go.



On the two round discs possibilities I was thinking something similiar to what's in this video at roughly the 2:56 mark. 

Hope all that makes sense.  If I can figure it out I know it won't be fancy so we'll see.

DaOld Man:
Someday when Im filthy rich (and not just filthy), I am gonna get me one of them laser cutter things.

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