Now you need to make a sell-able kit for that. I wouldn't mind connecting a programmed shaker to my NASCAR (I know ... not a WPC, but still possible in theory with this)

Since you are asking (he-he):
Option 1) Maybe a kit with everything needed except for the shaker … or the other 12v "thing" that you want to program to turn on.
Option 2) Make this an "add on" for your normal board so that we can use your product for addressable LEDs and a 12v "thing" with programming capabilities for each individually.

Example for #1: I would just want to add on a shaker for my NASCAR and be able to program it to trigger for the major things.
Example for #2: (As previously discussed with you but haven't ordered yet) I would want your product to program addressable LEDs for a custom interactive topper, but … now also add your triggered 12v board for lighting up Paul's leg light ups to have an interactive flash. Even better (wishful thinking … I know), have a 4 channel triggered 12v board to be able to light up each leg light up individually I know … I (or a group of us) gotta get Paul to have an option to install addressable LED's into his Leg Light Ups. Programming nightmare, but man would that be cool.

Back to reality. The triggered 12v board should be plug and play without us having to figure out how to put it together with simple instructions - just my opinion. Add a program library by machine just for triggering shakers for those pins that don't have that option built in - pinside community contributions of the code, of course (not all on you).

Got that done yet? The additional board with the functionality to control some 12v on/off thingys? I would probably just control 2 12v thingys. Side thought - do you have pinduino for JJP pins yet? TH in particular?

Okay … says it's out of stock … must be lots of pinheads buying them. I put it on my wish list. Might need to dive into it once they are in stock. Would this run a shaker on my NASCAR that can be programmed from the pinduino for different events? Or when the ACDC lightning bolts light, have a lightening type of light flash pattern go to some leg light ups on each leg (Two channels of program would probably be all that I want - front and back legs).

Don't know if it's possible but wondering if there is a way to run some 12 volt little slow RPM motors to turn the Weta barrel dudes on a custom topper for maybe 5 seconds when the barrel pop bumpers are hit? I already have the Weta barrel dudes.

I know … I got some wild ideas. Thinking outside the box. (see post 166)

https://www.wetanz.com/shop/figures/bilbo-baggins-barrel-rider?ref=brand
There are 3 different ones, and this is one of them - Bilbo

Definitely will and refresh our PM conversations from last year. With all of the DIY components and not knowing what I would need, I would need some advise and a tutorial. Thanks!