jamma wiring, probably stupid, but I'm stuck...

[patchboston]

Greetings!

I have listed my 60-in-1 pinout, plus the jamma adapter layout from bob roberts site (where my harness is from is from)
Now, for the most part I understand how everything works, but I'm somewhat confused with the minor details.

lets start with power..
On the power bundle of my icade pinout, do I have to hook the following to my 15v. power supply?
+5 on 3 (parts side),+5 on 3 (solder side),
+5on  4 (parts),+5 on 4 (solder)?

so would that make a total of four +5 wires going to the power supply?
that doesnt seem right.. hmm.

same thing with the grounds. Do I hook all 4 grounding wires from the pinout to my power supply?

also, I know that one of 12+ v. is now bundled with my coin door.

im taking a stab at this and guessing that I only hook one of the pins (say pin 3 on parts side for +5)


--

ok, dumb jamma question 2!
I've hooked up a mame setup to a keyboard encoder and have piggybacked the ground to a central block (all connected with 1) then to the encoder..
How will I be hooking up the grounds from this arcade setup? Do I connect the grounding circuits on my controls and then run the appropriate gnd wire to the jamma board gnd?

confused...








Bob Roberts bundle:

BUNDLE       PARTS SIDE      SOLDER SIDE    BUNDLE
Power    Gnd   1   A    Gnd   Power
Power    Gnd   2   B    Gnd   Power
Power    +5 volts    3   C    +5 volts    Power
Power    +5 volts    4   D    +5 volts    Power
Power   - 5 volts    5   E    -5 volts    Power
Power    +12 volts    6   F    +12 volts   Coin Door
NA    Key    7   H    Key    NA
Coin Door    Count 1    8    J   Count 2    Coin Door
Coin Door    Lock 1    9   K    Lock 2    Coin Door
Audio    Spkr +    10    L   Spkr -    Audio
Audio    Opt.   11   M    Opt.   Audio
Vid-Sync    Vid-red   12   N    Vid-grn   Vid-Sync
Vid-Sync    Vid-blu   13   P    Vid-Sync    Vid-Sync
Vid-Sync    Vid-gnd   14   R    Svc Sw    Coin Door
Coin Door    Test Sw    15   S    Spare   Coin Door
Coin Door    Coin-1    16   T    Coin-2    Coin Door
Player 1    Start 1    17   U    Start 2    Player 2
Player 1    1P UP    18   V    2P Up    Player 2
Player 1    1P Down    19   W    2P Down    Player 2
Player 1    1P Left    20   X    2P Left    Player 2
Player 1    1P Right    21   Y    2P Right    Player 2
Player 1    1P Butn 1    22   Z    2P Butn 1    Player 2
Player 1    1P Butn 2    23   a    2P Butn 2    Player 2
Player 1    1P Butn 3    24   b    2P Butn 3    Player 2
Player 1    Opt.   25   c    Opt.   Player 2
Player 1    Opt.   26   d    Opt.   Player 2
Player 1    Gnd    27   e    Gnd    Coin Door
Player 1    Gnd    28   f    Gnd    Player 2



please shed light!

thanks!

[SirPeale]

No, that sounds right.  Four for ground, four for +5V.

Really, it's not that big a deal.  Your power supply likely has two ground screws.  What gets kind of tight is the +5V, but just double the wires going to the connectors.

[RayB]

You could also use a little .50c distribution block. Run 1 wire from Power Supply to the block, and then the 4 wires from the block.

Some good reading:

http://www.therealbobroberts.net/jh.html

http://www.therealbobroberts.net/buildit.html

[patchboston]

No, that sounds right.  Four for ground, four for +5V.

Really, it's not that big a deal.  Your power supply likely has two ground screws.  What gets kind of tight is the +5V, but just double the wires going to the connectors.

ahhhhhhhhhhhhhhhh, thank you. When you say double the wires, do you mean literally combine them with one spade connector, or just double the sades up when they get to the PS?

You could also use a little .50c distribution block. Run 1 wire from Power Supply to the block, and then the 4 wires from the block.

Some good reading:

http://www.therealbobroberts.net/jh.html

http://www.therealbobroberts.net/buildit.html

I actually purchased bob's drop-in power supply, that diagram is pretty much identical.
thanks for the links.

--

[SirPeale]

Two wires in one connector.