Oh, it will.

https://pinside.com/pinball/forum/topic/ramp-lighting-in-your-face-st-pro-brought-to-lifevideo/page/24#post-3416829

Calls the sounds for the spinners

The add-on will talk to the CPU board and call the sound when the installed spinner is hit. I will not be supplying spinners as Hooked has that covered. This way, you get the sound but not the errant scoring associated with hitting the tied-to pick target.

I will be supplying the required wiring. I have a set of Hooked's spinners, so I will make sure I include what is needed.
The new board plugs into an existing header on the MI.

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Good to see! But technically, something could still go wrong and I never get it completely finished. The spinners are fun to have regardless.

Glad you asked! Funny how this seems to happen.. Just now have successfully tested switch hits calling sound requests. I can now confidently call any of the sound requests included in the factory code from any switch. So, your installed spinners get wired back to the interceptor and are allocated to blank switch spaces on the matrix.
I also have all the control that the matrix interceptor gives me regarding locking into modes like I do with the lights, so I can have different sounds played by the spinners depending on states of the game.
I am now working on response times and smooth playback to ensure quality rrrrrrrripability.

Here's some footage of testing. Spinners generating sounds without scoring. Still work to do on the tuning of the response. But it works!

Ok, I'm starting to get a little bit excited about this. Here is footage after some work on the response tuning. And I have found the gunshot sound request, which comes out like a machine gun. I think I will set it up to do the bass drum most of the time, with the machine gun in certain modes. I am digging through and testing all the sound requests to see which work best. Hopefully I will end up with three or four different ones.

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I can't guarantee this would be effective, but I think, Rens, you would be the first person on the entire planet to have a splitter on the rs232 port. And this would cement your position as having the most modded Metallica in existence.

I realise now that I was projecting my own inadequacies onto Tiny Rick. It was never his fault, but rather my naive approach and underdeveloped skills which led to my frustrations. I have apologised to Rick privately, and he is all good. I humbly thank him for the valuable lessons he has given me.
Merry Christmas,
Mike and Rick

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More test footage. This clip shows the final sound choice for the normal run of play. I am playing badly here so there aren't that many good hits to the spinners, lol. There are two good hits in the first 45 seconds and that's about it for normal gameplay, but it clearly shows how good it is. The rest of the clip is me getting to and failing at Sparky MB. The point is, I am demonstrating how I can use a different spinner sound at different parts of the game. During the MB, the spinners play an electric shock sound. It's a little difficult to hear the shock sound in this video just because of the sound mix in the room, but it is clear from in front of the machine.
So there will be some more sound choices made over the next couple of weeks for other points in the game, and I have to work out how I supply the cabling to get it hooked up for people who already have the kit and want to retrofit Tiny Rick. New kits will go out with redesigned matrix cables that are ready to accept the spinner wires.

Four different modes, four different sounds.
Normal Play, Sparky MB, Coffin MB, FTB.

It's still coming, but I had to change the mech. I thought it was through development, but during testing I have found an issue with overrun on the motor. Because of the type of gearing in the motor, it runs on a bit more than the factory motor after the power is cut. This is something that can be addressed, but it requires tweaking the switch actuator. And in fact, I've ended up changing the switching design all over, so I have to rebuild the prototype housing.

And here is my little Tron implementation of Tiny Rick. I'm getting him to call the LCMB start sound on hits to the target bank during LCMB. Outside of LCMB, hits to the targets are as normal.

Putting the last touches in the Tron Total Rampshow. Here is Quorra..
During normal play, spinner fades up when hit. If hit hard enough to register enough spins it will payoff with a brief flash.
During the MB, the ramps alternate green fade.
When JP is hit at the spinner, the factory GI is dimmed and a soft fade flash is triggered.
When the SJP is hit at Gem an aggressive payoff flash is awarded, with the factory GI precisely alternating with the green of the ramps. So there is a lot of visual action, but the green stands out because for the few milliseconds that it's on for each flash it's not drowned out by the GI.
Tiny Rick is on sound duties, calling the LCMB start sound sequence on every ball launch. F'ing cool that is, I'll tell you.

I am targeting the same price as the Metallica kit, so around US$285. Give or take.

Latest development update is that I have the last of the redesigned light boards on order now, and am just working out the best supplier for the POF. Code is in tweaking-only stage.

For those waiting on Tron, here is a run through of the complete code up to and including SOS. I forgot to demo the outline fades and extra ball. They are in the code though. OL fades are similar to Met, with orange on the left and blue if you drain on the right. Extra ball just flashes the left ramp orange in sync with the extra ball insert. I'm just waiting on final hardware components to come in and I'll do some install video.

New reflow oven in da lab! And Tiny Rick's about to be on the line..

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Here is detailed footage of the response behaviour of the spinner sound. It is just never going to be as smooth as the native spinners, but I am super happy with the way this is working. I have experimented with synthetic response curves where I just tell the board whether or not the spinner is active, and then take some time measurements and calculate how fast it is spinning, then play a predetermined repeat rate of the sound call, then return it to natural hits when it drops under a certain spin rate. This results in a perfectly smooth rip when the spinner is moving fast, but I just feel there is something not quite right about a synthetic playback.
I could spend more time tuning the synthetic playback to be variable as the spinner changes speed and be pretty indistinguishable from natural hits to a player during the run of play, but somehow that doesn't seem right. And really, I think the performance here is pretty good. This footage is recorded with the quietest background music that is ever playing in the game, so every little blemish can be made out if you concentrate hard enough. During play it sounds like a normal spinner to me.
At this stage, this is how it will ship.

Added over 7 years ago: Edit..it won't be shipping like this. I have improved it.

Oh no, you missed the press release..

Full run through of spinner code. Run of play is..

Normal play..bass drum

Fuel..on weak hit nothing, on a hard hit the fuel jackpot sound

Sparky MB..electric shock

Fade to black..whip (or something. I don't know what to call it, but it works really well)

Coffin MB..gun shot.

Notice the dropping in and out of modes in sync with game code.

That video actually shows the Met Total Lightshow doing its whole thing. Driving the lights, cross and spinner sounds.

Here is a look at the spinner sound caller add-on kit. It includes the communications board, power, signal and RS232 cables. It will be around US$45. Still a few days from going live on the website.
In this form it will require an IDC pusher to push the signal wires onto the relevant Matrix cables you already have connected to your Matrix Interceptor. I will be offering optional replacement matrix cables with the connector already on the wire to accept the spinner signal wires, if you don't want to push these connectors on.
New Total Lightshow kits that are ordered with the sound caller included will get the upgraded matrix cables as standard.
Video install instructions will be coming within the week.

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This does not score. It plays sounds at the proper spinner rate. The spinners connect back into the machine's switch matrix and are read by my Matrix Interceptor in the same way any other switch is read. The new add-on board then sends a sound call directly to the CPU via the RS232 port at each spinner switch hit. You get the sounds playing at the correct rate, and I have coded different sounds for different parts of the game. See video a few posts back.
I don't supply physical spinners. Use Hooked's spinner kits, but then connect them back to Total Lightshow instead of to the pick targets.