PC Engine 6 button controller

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pbj:
Did I get the correct arrays? Here's what I ordered:

8P 330R A331J

https://www.aliexpress.us/item/3256804160893121.html

A09-473 47K

https://www.aliexpress.us/item/3256802285129102.html

mourix:
Those seem fine at first glance but I'm afraid we are at the stage where stuff has to be measured to be sure of anything..

pbj:
So, I think I put in a bussed network array for the 330 Ohm RN2 and what I really needed was an exclusion/isolated array.

:embarassed:

The only 330 Ohms I have laying around are huge flame proof stuff I probably bought to fix an amplifier or something. Anyway, I'll get the right part ordered.

mourix:
I do see some random datasheets saying A is bussed now I looked once more. Wouldn't have spotted it from the ali listing tho.

Again, this is just a non critical series protection resistor pack. I think any resistor less than 1K you may have laying around would work fine as a quick confirmation test.

pbj:
I pulled off that 8 pin bussed array and stuck in 4 220 Ohm resistors. I've got up, down, left, and right now. It's all getting so jumbled and overworked I may just start with a fresh board. :lol

Anyway, that filter capacitor should arrive in the next day or two. I think we're very close!

:cheers:

EDIT: Success! I've gotten every input to fire in both 2 and 6 button mode. I'm going to start over with a fresh board and proper components but the concept has been proven.

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