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Main => Main Forum => Topic started by: eggedd2k on September 05, 2005, 08:48:44 am

Title: Wiring a coin mech to a computer PSU
Post by: eggedd2k on September 05, 2005, 08:48:44 am

i've got a sentinel coin mech - 12v. Would it be possible to power this from a computer psu? how would you ensure you get 12v?

Title: Re: Wiring a coin mech to a computer PSU
Post by: pmc on September 05, 2005, 09:01:03 am

The yellow wire on a PC PSU is +12V. I'm not sure if you need to know more than that... someone here will be able to tell you.

-pmc

Title: Re: Wiring a coin mech to a computer PSU
Post by: eggedd2k on September 05, 2005, 09:46:42 am

how do you physically wire it to the 12v on the computer's PSU? do you have to take the case off the PSU to do this?

Title: Re: Wiring a coin mech to a computer PSU
Post by: agfisher on September 05, 2005, 09:53:08 am

You should be ablr to just tap off of the Yellow (+12v) and the Black (Ground) from the Hard Drive power connectors.

Adam
Boston, MA

Title: Re: Wiring a coin mech to a computer PSU
Post by: eggedd2k on September 05, 2005, 10:26:12 am

thanks. seems easy enough. what's the best way of attaching the wires?

Title: Re: Wiring a coin mech to a computer PSU
Post by: Franco on September 05, 2005, 10:42:13 am

You could use some insulated disconeects like these that i used:-

(http://www.moddedcomputers.com/images/thumbs/quick_disconnects.gif)

Also, this site has some info on wiring the sentinal mech, including dip switch settings.

http://homepage.ntlworld.com/chris.nightingale1/arcades/cbmain.htm

Title: Re: Wiring a coin mech to a computer PSU
Post by: pmc on September 05, 2005, 10:59:23 am

Quote from: eggedd2k on September 05, 2005, 10:26:12 am

thanks. seems easy enough. what's the best way of attaching the wires?

I used a molex hard drive cable. Plug into the PSU harness and then cut the connector off the other end. Extend the yellow and the black wire next to it (pin 1 and 2) to your destination and hook up with quick-disconnects as mentioned. Tape off, remove, or cap wires 3 and 4.

-pmc

Title: Re: Wiring a coin mech to a computer PSU
Post by: agfisher on September 06, 2005, 09:04:15 am

Quote from: pmc on September 05, 2005, 10:59:23 am

Quote from: eggedd2k on September 05, 2005, 10:26:12 am

thanks. seems easy enough. what's the best way of attaching the wires?

I used a molex hard drive cable. Plug into the PSU harness and then cut the connector off the other end. Extend the yellow and the black wire next to it (pin 1 and 2) to your destination and hook up with quick-disconnects as mentioned. Tape off, remove, or cap wires 3 and 4.

-pmc

I do something like this but I cut all four wires and extend then to a wiring bus. Then, if i need  +12, +5 or Ground in the future, I just tap off of the bus. You can then use the quick disconnects between the bus and your application.

Adam
Boston, MA

Title: Re: Wiring a coin mech to a computer PSU
Post by: RayB on September 06, 2005, 02:48:43 pm

**WARNING**
Use a multimeter first to determine which wire is 12v. Not all manufacturers use the same color codes. Most do, but there ARE some that reverse it. Though I suppose it won't hurt anything if you accidentally apply 5v instead of 12....

Title: Re: Wiring a coin mech to a computer PSU
Post by: Stingray on September 06, 2005, 03:23:02 pm

Quote from: eggedd2k on September 05, 2005, 10:26:12 am

what's the best way of attaching the wires?

I'm not sure it's a really spectacular idea for you to be poking around inside an arcade machine. If you see something that looks like a suction cup, don't touch.

-S

Title: Re: Wiring a coin mech to a computer PSU
Post by: tivogre on September 07, 2005, 01:15:17 am

I made a cable to tap off of a hard drive power plug.

I started with a HD power splitter cable.  One branch, I removed the molex plug and soldered on a length of wire to the 12v and GND wires.

To the other end of the extension wire, I soldered 6 pairs of 12v / GND wires with QD terminals:

(http://www.ogredog.com/images/MAME%20Construction/Wiring%20Harness%20-%20Hydra%20Power%20Supply.jpg)