Fruity Nut Posted February 18 Report Share Posted February 18 (edited) So if I'm connecting buttons to both banks of terminals on the board, do I need to use the 2nd ground terminal at all or is it just there to make life easier for say multi player mame setups where players controls are at a distance from each other? Probably a silly question as I reckon it doesn't matter but before I finish wiring all the buttons I just wanted to be certain. TIA Edited February 18 by Fruity Nut Link to comment Share on other sites More sharing options...
slotsmagic Posted February 19 Report Share Posted February 19 (edited) 13 hours ago, Fruity Nut said: So if I'm connecting buttons to both banks of terminals on the board, do I need to use the 2nd ground terminal at all or is it just there to make life easier for say multi player mame setups where players controls are at a distance from each other? Probably a silly question as I reckon it doesn't matter but before I finish wiring all the buttons I just wanted to be certain. TIA (Edit- THIS IS INCORRECT, IGNORE IT - SORRY! SM) I would assume (but could be massively wrong!) that if you had your buttons spread across both banks (that's a lot of buttons!) you'd want to run separate grounds to them - so a daisy chain of wires from the buttons on one bank to that bank's ground, and then the buttons connected to the inputs on the other bank would have their own ground wires. I use both banks of connectors on my iPAC - but one is for buttons (with their own ground) and one is for coin mech and hopper (again, with their own ground). See dodgy blurry screenshot from a video capture of my build. Top bank is button microswitches, bottom bank is hopper opto and inputs from coin validator. Edited February 19 by slotsmagic Currently owned digitals : T7 Encore, T7 Original, Astra iPub and Storm Street Casino. MFME cabinets : Genesis cab DIY by No1Stoney, Interplay conversion and Vegas Strip conversion (both are works in progress!) Link to comment Share on other sites More sharing options...
Martinb Posted February 19 Report Share Posted February 19 7 hours ago, slotsmagic said: I would assume (but could be massively wrong!) that if you had your buttons spread across both banks (that's a lot of buttons!) you'd want to run separate grounds to them - so a daisy chain of wires from the buttons on one bank to that bank's ground, and then the buttons connected to the inputs on the other bank would have their own ground wires. Understand the thinking but not necessary at all on these inputs, the grnd (or common in this case) to each pushbutton can be daisy chained no problem to a 32 inputs if that many was required. I am like you tho, my second grnd is used for payout but they are basically the same just the ipac provides 2 terminals for ease. 1 Link to comment Share on other sites More sharing options...
slotsmagic Posted February 19 Report Share Posted February 19 2 hours ago, Martinb said: Understand the thinking but not necessary at all on these inputs, the grnd (or common in this case) to each pushbutton can be daisy chained no problem to a 32 inputs if that many was required. I am like you tho, my second grnd is used for payout but they are basically the same just the ipac provides 2 terminals for ease. I assumed that was the case but didn't want to risk it, I mean ground is ground after all so it makes sense Currently owned digitals : T7 Encore, T7 Original, Astra iPub and Storm Street Casino. MFME cabinets : Genesis cab DIY by No1Stoney, Interplay conversion and Vegas Strip conversion (both are works in progress!) Link to comment Share on other sites More sharing options...
Fruity Nut Posted February 19 Author Report Share Posted February 19 Yes that's confirmed my thoughts. Thanks guys Link to comment Share on other sites More sharing options...
slotsmagic Posted February 19 Report Share Posted February 19 10 minutes ago, Fruity Nut said: Yes that's confirmed my thoughts. Thanks guys Don't thank me, I'm the number 1 clueless hobbyist and shares incorrect info lol Currently owned digitals : T7 Encore, T7 Original, Astra iPub and Storm Street Casino. MFME cabinets : Genesis cab DIY by No1Stoney, Interplay conversion and Vegas Strip conversion (both are works in progress!) Link to comment Share on other sites More sharing options...
MPU_FIVE Posted February 19 Report Share Posted February 19 (edited) As long as they are all connected to 1 ground terminal than it should be fine... I used both GND terminals on my build purely because i had 1 daisy chain for the bottom 8 buttons and a 2nd daisy chain for the top 8 buttons, so it made sense to use them both. Here's a picture showing my wiring during the wiring process... Edited February 19 by MPU_FIVE add picture 1 Link to comment Share on other sites More sharing options...
Fruity Nut Posted February 19 Author Report Share Posted February 19 28 minutes ago, MPU_FIVE said: As long as they are all connected to 1 ground terminal than it should be fine... I used both GND terminals on my build purely because i had 1 daisy chain for the bottom 8 buttons and a 2nd daisy chain for the top 8 buttons, so it made sense to use them both. Here's a picture showing my wiring during the wiring process... Nice and tidy Link to comment Share on other sites More sharing options...
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