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how should automatic paper towel dispenser work? Answered

sir, i want full details off automatic paper towel dispenser,
how the sensor board will work automatily, how we get a paper in few sec

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user
lemonie (author)2011-09-21

If you want to set up a factory making these, just obtain (e.g. buy or request a sample) and reverse-engineer it.

L

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user
thematthatter (author)2011-09-21

i gathered some intelligence from that very same dispenser.

After you wave your hand infront of it, it dispenses a predetermined amount of paper (1 serving) and stops.
No matter how much you wave it will not dispense anymore paper until you pull on it to reset the mechanism.
Then you can wave your hand and it will dispense another serving of paper. Without that switch you would endup with a whole roll on the floor.

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