Replacing Coin acceptor to with Opto interrupter to initiate action

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#1 21675747 19 Apr 2016 19:45

Kevin Angelo Ma Kevin Angelo Ma

Anonymous

Post #1
21675747 19 Apr 2016 19:45

Hi,

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Need guidance on replacing 12 V coin acceptor with 5 V opto interrupter
#2 21675746 20 Apr 2016 03:19

Ramputty Prithviraj Ramputty Prithviraj

Anonymous

Need guidance on replacing 12 V coin acceptor with 5 V opto interrupter
Post #2 21675746 20 Apr 2016 03:19

Dear sir

I am in the business of Coin Operated height Weight BMI Machine.

I have some electronic issue Please Help.

I have a motherboard for such machine which uses coin acceptor using 12 V supply.

I wish to change it to a coin acceptor that only uses a photo Interrupter which uses 5 V

Please let me how to proceed.

Should you need more information just let me know.

Thnaks

Mr Ramputty

Mauritius
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#3 21675748 20 Apr 2016 03:25

Ramputty Prithviraj Ramputty Prithviraj

Anonymous

Post #3
21675748 20 Apr 2016 03:25

please advise urgent please
the mother board of my coin operated weight height measurement machine is operated by inserting in a coin acceptor GD 315 model which uses 12 v
i want to use same mother board in another old machine which is operated by inserting a coin in in coin accepter using opto inrrupter which uses 5 volt.
ramputty
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#4 21675749 20 Apr 2016 20:16

Kevin Angelo Ma Kevin Angelo Ma

Anonymous

Post #4
21675749 20 Apr 2016 20:16

Hi,

I don't know if this would work, combining the two coin acceptors. There are just two many factors to think about.
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#5 21675750 21 Apr 2016 13:48

Ramputty Prithviraj Ramputty Prithviraj

Anonymous

Post #5
21675750 21 Apr 2016 13:48

Hi
Sorry you got me wrong
i wish to replace the GD 315 with an opto interrupter type device
Hope you get my point
Photo interrupter can replace coin acceptor with interface circuitry
#6 21675751 21 Apr 2016 15:06

richard gabric richard gabric

Anonymous

Photo interrupter can replace coin acceptor with interface circuitry
Post #6 21675751 21 Apr 2016 15:06

Coin acceptors are normally designed to reject the wrong coin types, as well as foreign objects resembling coins. If that is not going to be a problem, then there is no reason why a photo interrupter couldn't be used. You will just have to figure out the interface, and put the necessary electronics between the photo interrupter and the motherboard. I would have thought the photo interrupter would have worked on 12V, does it have the resistors built in,
cheers,
Richard
Opto interrupter output needs pulse inversion and amplification
#7 21675752 22 Apr 2016 01:09

Ramputty Prithviraj Ramputty Prithviraj

Anonymous

Opto interrupter output needs pulse inversion and amplification
Post #7 21675752 22 Apr 2016 01:09

Thks
Coin rejection is not the problem ,
setting up the Opto interruper is not a problem i can do that.
the OI i suppose is usually in the NC mode (normally Close) and it is open when a coin interrupt the IR.
Where as the MB operate in the opposite mode that is when it receive an impulse it get ignited and when there is no pulse it is in standby mode.
and also the signal strength is low and not enough to kick off the MB.
Pls advise
Thanks
#8 21675753 22 Apr 2016 15:51

richard gabric richard gabric

Anonymous

Post #8
21675753 22 Apr 2016 15:51

Put an inverter using a transistor or fet into the output of the interrupter, supplied from the 12V supply,
cheers,
Richard
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Topic summary

A coin-operated height and weight BMI machine motherboard originally uses a GD 315 coin acceptor powered by 12 V. The user intends to replace this coin acceptor with a photo interrupter (opto interrupter) device operating at 5 V to initiate the machine's action. The main challenge is interfacing the opto interrupter output, which is typically normally closed (NC) and opens when interrupted by a coin, with the motherboard input that expects an active impulse signal to trigger operation. The opto interrupter's signal strength is insufficient to directly activate the motherboard. It is suggested to use an inverter circuit employing a transistor or FET powered by the 12 V supply to convert and amplify the opto interrupter output signal to the required logic level and polarity compatible with the motherboard.
AI summary based on the discussion. May contain errors.

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Replacing Coin acceptor to with Opto interrupter to initiate action

Replacing Coin acceptor to with Opto interrupter to initiate action

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