(Topic ID: 118029)
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Jacksonville, FL
Quoted from HisboyElroy:Thanks for posting that schematic!! I wasn't sure whether the 8-track harness passed voltage through those wires... I actually posted on Sparkfun's forum asking whether it was OK to pass voltage through the trigger switches and the reply I got said that normal operation for the board was just contact closure to ground. They warned against passing more than 5v to a trigger input. Maybe I'll coin-up a game and measure with a DMM? It would be much simpler than rigging-up leaf switches.
yes you would want to measure the voltage to see what is on that line.
Quoted from robertsonics:Robertsonics here. The trigger inputs can be configured for contact closures - basically a switch or button to ground, or for logic level activation, which means 3.3V or 5V signals. Anything over 5V will likely damage the GPIO pin of the processor.
Tracks can be looped using the serial control port, and I'm testing new firmware that supports looping from a trigger input. Keep an eye on my website (robertsonics.com) because I'm regularly pushing out new firmware.
Let me know if you have questions about the WAV Trigger and I'll do my best to answer.
based upon the above schematic for the old 8 track player what do you think would be the best way to wire in the wav trigger. I believe the voltage line for each sound on the old 8 tracker player is either 12v or 24v. Don't have easy access to the game at the moment so hopefully the thread author can post the actual voltage.
I can send the complete schematic if necessary.
11 months later
I am working on a plug and play solution designed for haunted house but should work for others which use same pinout.
Stayed tuned for details
Thanks to HisboyElroy for sending me the converted audio files!
2 months later
soon still putting my game back together had issues with the horizontal witch motor but got that sorted now.
3 weeks later
Finally a update for everyone!
Please check out the following thread.
https://pinside.com/pinball/forum/topic/midway-em-rifle-modern-audio-replacement
1 year later
Very few people showed interest after trying to confirm not likely to happen unless someone wants to be a reseller.
3 years later
For those interested these are the pictures of the prototype board. I don't think it will ever get made as I sold the game and believe its in California now.
We used a wav trigger as it supported multiple tracks at same time. The breadboard is a power supply and isolation circuit for each track trigger. everything is rough in these pics as was prototype, we were planning on a plug and play solution. The copper board was roughly cut to fit original connector for 8 track player. So the board was designed for original harness of 120v and dropped it to 5v for wav trigger and isolated each input for voltage protection.
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