# Schematic Question with electronic button

what I'm trying to do is hook up a push button, either a:

• 2-wire push button, or a
• 4-wire push button (Push Buttons that look like on this PDF):

whichever type of button is required. (I don't want to blow the circuit).

Here is the Diagram:

What I'm trying to do is this.. We own a coin operated washing machine in a building & we want to give family free washing, but the other tenents will pay. we want to hide the button being its very small in a discrete location somewhere.. I'm not worried about the hiding part.

I need to know looking at the Diagram, how would I go about that? would I use a 2 wire push button or a 4 wire like in the above PDF (i have those on hand). from videos I have seen & research I have read.. I am guessing wires # 1 & 4 (Blue & White/Blue) ?

But I dont understand what the wires # 2 & 3 do? they have the same arrows with lines going thru them.

And do I need more then just a push button? like a resistor or something too?

I'm sorry, I am not very good at this, any help would be appreciated.

** EDIT: I am adding in the full Schematic so you can see.. if you tell me to run a wire from point 'A' to point'B'.. I will do whatever it takes to make this work, again please any help would be appreciated.. I don't know what to do.

• Why not just give them 10 coins per month - they get 10 washes per month and any more have to be paid for. You do realise that to use the button they have to be alone in the room otherwise the secret gets out... which it will anyway. – Solar Mike May 31 '18 at 5:09
• @SolarMike, its a small room & the family won't say anything (family being 3 people) – SecureCloud May 31 '18 at 5:28
• In the schematic there are two optics like the one in the picture. You use two kind of coins? Can you also post a picture of the coin comparator you use? It might not work with only a switch. – Dorian May 31 '18 at 7:12
• its just a US quarter slot, 6 quarters.. thats it, also ONLY - AA4 is used (coin sensor), theres only 4 wires coming out of coin area – SecureCloud May 31 '18 at 7:23
• I found the datasheet, so it's a dumb mechanical coin comparator or an external accept/reject device and the opto is used only to see if a coin has been validated. The only security measure is a timeout of 8 seconds for the opto blocked state. This is rather permissive, use The Photon solution but warn the family to push the button less than 8 seconds per coin. – Dorian May 31 '18 at 12:51