Dragon's Lair Fans - Arcade Lifestyle

General Chat => Technical Area => Topic started by: simplesi on April 13, 2012, 01:55:00 PM

Title: Coin Counter
Post by: simplesi on April 13, 2012, 01:55:00 PM: Just wondering if someone could help me fix my coin counter. I picked up an old shell of a cocktail cab (Taito). There was not much inside apart from the service button and the coin counter. All the harness, pcbc, etc were taken out.

I am installing a multiboard with a jamma harness and wanted to link up the coin counter. I haven't a clue what's what. Any help would be greatly appreciated.

Here are some pics below:

What does the yellow wire connect to and the bluish one? Is one connected to the Counter 1 on Pin 8 on the harness and the other the 5V? How does the board know that you have put a coin in? It's all magic to me. Do I have to ground it? So many questions...
Title: Re: Coin Counter
Post by: simplesi on April 13, 2012, 09:35:27 PM: 23 views... can anyone help or give me advice please?
Title: Re: Coin Counter
Post by: Muerto on April 13, 2012, 09:43:22 PM: sorry, i have been here a couple of times, and i can see you have posted the same on UkVAC - with a bit more help....
Title: Re: Coin Counter
Post by: Belike on April 13, 2012, 09:55:47 PM: Quote from: Muerto on April 13, 2012, 09:43:22 PM
sorry, i have been here a couple of times, and i can see you have posted the same on UkVAC - with a bit more help....
+1
Title: Re: Coin Counter
Post by: simplesi on April 14, 2012, 01:55:38 PM: Cheers guys. :)

Has anyone got a Taito Cocktail that could help with?
Title: Re: Coin Counter
Post by: simplesi on April 17, 2012, 03:36:45 PM: Can anyone help... Ully... Etienne... Muddy... :(
Title: Re: Coin Counter
Post by: Superully on April 17, 2012, 04:00:04 PM: i interpreted michael's posting that you've put up the same thread on UK-VAC and got help there - am i mistaken?
Title: Re: Coin Counter
Post by: Etienne MacGyver on April 17, 2012, 04:23:23 PM: I would love to help, i just dont know nothing about them.

i know it needs a puls, the question is how many volts, and AC or DC...

You can try to puls it by connecting 5 volts dc for example.
If nothing happens, try 5 volts ac, if still not happens nothing , increase the voltage :twisted:

but dont hold me responsible if it burns out ;)
Title: Re: Coin Counter
Post by: simplesi on April 17, 2012, 05:18:27 PM: @Ully... not really got the answer from UKVAC. Need a little more info. Thanks though.

@Etienne... I tried using the 5V DC from the mian power supply, connected to the ground and I can get the counter to rotate. The issue I have is do I need to have a diode (resistor?) so that when I connect to the PCB I don't sned 5V into the board and screw things up! Would just be my luck.
Title: Re: Coin Counter
Post by: Etienne MacGyver on April 17, 2012, 07:34:27 PM: It never hurts to add a diode to protect the board..
Title: Re: Coin Counter
Post by: level42 on May 04, 2012, 08:20:35 AM: What kind of multi board are you connecting ? Does it actually have any output to spend out the Coin pulse ?
Title: Re: Coin Counter
Post by: simplesi on May 04, 2012, 10:48:19 PM: Hi,

It's a 60in1. It says in the instructions that it can.

Are you able to help Level42?

Si
Title: Re: Coin Counter
Post by: level42 on May 04, 2012, 11:21:58 PM: Got some schematics or manual of the 60in1 ?

The diode should not be in series but parallel over the coin-counter. It's function is to "extinguish" (as we call it) any peak voltages coming back from the coin counter into the game PCB.

The most coin counters I know require a higher voltage than 5V (about 10 IIRC).
Title: Re: Coin Counter
Post by: level42 on May 05, 2012, 12:12:45 AM: Checked the 60in1 manual here http://www.jammaboards.com/arcade_manuals/60-in-1_iCade_Classic_Arcade_Manual_Online.pdf

but it's not really helpful. It says pin 8 on the parts side is Coin meter P1. I +GUESS+ that that will be the positive pulse to trigger the coin meter. You should measure it with a DVM to see if I'm correct and what voltage it is, but it will probably hard to see since it's a very short pulse.

IF I am correct with the assumption above, you would hook up the + of the coin meter to pin 8 and the - to a GND connection.

Again, you MUST put a diode in parallel over the coin meter connectors (NOT at the PCB side, it won't help much there).

The cathode has to be at the + side and the anode on the - side of course (else it will short circuit of course).
Title: Re: Coin Counter
Post by: level42 on May 06, 2012, 12:02:49 PM: Here is how to hook it up IN THEORY !!!!

(http://gallery.me.com/andre.huijts/100937/IMG_0223/web.jpg?ver=13362979130001)
Title: Re: Coin Counter
Post by: Etienne MacGyver on May 06, 2012, 01:03:54 PM: mac paint ? ;D
Title: Re: Coin Counter
Post by: simplesi on May 06, 2012, 03:15:20 PM: Thanks guys. Really appreciate it.

@Level42... I am guessing that it is 5V because I used a 5V line and a ground and when applied to the counter it jumped. There was a wee spark... all good though. In terms of a diode, what would I spec to get one? RS, Maplins? What would you recommend?

Si
Title: Re: Coin Counter
Post by: Etienne MacGyver on May 06, 2012, 05:36:02 PM: I think a standard 1N4001 will be more than enough
Title: Re: Coin Counter
Post by: simplesi on May 06, 2012, 05:53:06 PM: This one?

http://uk.farnell.com/diodes-inc/1n4001-t/diode-rectifier-50v-1a-do-41/dp/1843694 (http://uk.farnell.com/diodes-inc/1n4001-t/diode-rectifier-50v-1a-do-41/dp/1843694)
Title: Re: Coin Counter
Post by: level42 on May 07, 2012, 12:09:27 AM: General rule is to take a diode that can handle a reverse voltage of ten times the applied voltage, so if it is 5 Volts then a 1N4001 should be enough, althought it's exactly at the border. If you have to specially order anyway go for a 1N4002 which can handle 100V or 1N4003 @200V, there will hardly be a price difference and you apwill be on the safe side.

If I find some time tomorrow I will make another drawing to explain why such a diode is needed with one of my famous drawings ;)

Be sure to mount the diode directly on the terminals of the counter.