Arcade Collecting > Arcade1Up & Similar
Help Wiring EG Starts USB encoder to Sanwa microswitch
R0CKY:
I have a working Arcade1up cab retropi conversion using the EG Starts buttons and USB encoder.
I am trying to swap out one of these buttons for a sanwa button, but I cannot for the life of me figure out the wiring and get the new button to operate.
In this photo you can see the current set up and I have the new white micro switch lying there for reference.
The existing buttons connect to the usb encoder with a 3 pin connection.
The Sanwa microswitch uses 3 spade connections though. So I split the existing cable and by touching 2 of the three wires together with retropie running, I figured out the two wires that operated the button. But when I connect these two wires to the new microswitch, nothing happens, the switch does not operate.
Where am I going wrong?
leapinlew:
When you say you touch them to the new microswitch nothing happens, what prongs are you connecting to and are you activating the switch?
On the connectivity, it looks something like this, right?
And then you push the red button on the switch to activate the switch? If that's what you're doing, try a different switch.
PL1:
--- Quote from: R0CKY on July 31, 2021, 07:29:10 am ---I split the existing cable and by touching 2 of the three wires together with retropie running, I figured out the two wires that operated the button. But when I connect these two wires to the new microswitch, nothing happens, the switch does not operate.
--- End quote ---
Sounds like you have found the data and ground wires that Vocalitus identified here.
Those two wires connect to the microswitch COM (Common -- the bent one on the bottom) and NO (Normally Open) tabs.
- There should be markings or a diagram on the switch to identify which of the straight tabs is NO.
- Unless the switch is defective, pressing the microswitch will do the same as touching the wires together. There's no polarity to the switch so it doesn't matter as long as the ground and data wires are connected to the COM and NO tabs.
____ NC
COM ____/ ____ NO
Do not connect the third wire (5v) to the NC (Normally Closed) tab.
Scott
R0CKY:
Hi Guys
What a relief to find an active forum at last - I've been struggling with this for months!
So, on the sanwa microswitch in my photo, there are two connections together (lets call them A & B), and the 3rd one is on the underside (C) . I was connecting to the 2 wires that I knew operated the switch to A & B. I tried them in both combinations, pressed the swicth, and nothing happened.
I had read somewhere that C was a ground, that's why I tried A & B.
Looking at your image posted above, maybe I should try B and C.
R0CKY:
--- Quote from: PL1 on July 31, 2021, 09:09:49 am ---
Sounds like you have found the data and ground wires that Vocalitus identified here.
Those two wires connect to the microswitch COM (Common -- the bent one on the bottom) and NO (Normally Open) tabs.
- There should be markings or a diagram on the switch to identify which of the straight tabs is NO.
- Unless the switch is defective, pressing the microswitch will do the same as touching the wires together. There's no polarity to the switch so it doesn't matter as long as the ground and data wires are connected to the COM and NO tabs.
____ NC
COM ____/ ____ NO
Do not connect the third wire (5v) to the NC (Normally Closed) tab.
Scott
--- End quote ---
Ah, I can see the bent one is labelled COM and the other two are both labeled NO.
I'll give this another shot - thanks.
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