Triggers on tsunami Qwiic board
What about them?
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I want to tigger wav files by connecting to a leaf switch with two leads, one load goes to ground, the other to power. The switch is in an arcade game running at 24 vac. I am a beginner using a tsunami plus board. I have ordered the board and in planning stages. The switch is normally open. I plan to run a wire from the ground lead side of the switch to the ground pad for the trigger. When the switch closes I hope the wav file will be triggered. In reading the connection guide and watching the videos, instructions are to ground out the trigger. Will one wire from the ground side of the switch make this happen, or do I need to also runs wire from the power side of the switch to the the other trigger pad? I am worried that running two wires from the switch to the ground pad will send 24vac to the tsunami board and ruin it. Thank you for any help you provide.
John
You definitely need to do more than just connect grounds. In addition, you will need to level shift the 24V on the high side of the switch to 3.3V. Connecting directly will definitely destroy the trigger input. That’s if you want to connect the switch to a Tsunami trigger input.
If on the other hand, you want to control Tsunami over Qwiic, for example using a Redboard Qwiic, you might locate some Arduino compatible hardware interface that allows you to read 24V, perhaps a relay board, connected to the Redboard.
Perhaps someone here has done this?
As mentioned above, you’ll need to convert the 24v to 3.3v so that the Tsunami can use the signal, both of these below accept 24v and output 3.3v
You’d then wire the regulator’s output to the trigger pins (input to the regulator are the + and - from the 24v switch)
Thanks for replying. In reviewing the specs, I read that these convert dc to dc voltage. Is there an option to handle 24vac to 3.3vdc.
Being AC complicates things, see Reddit - The heart of the internet and other resources online
Without schematics for your game its difficult to make a suggestion. I’d do one of these two to simply things.
1 Replace your buttons with ones that have a second, unused leaf switch and use that for the WAV trigger.
2 Add a button activated relay to the game for each button and use the relay contacts for the WAV trigger.
Connecting any AC voltage to the WAV trigger will probably damage it and might even destroy it.
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Thanks for responding. Schematic if you’re interested. May have some questions for implementing your suggestions if you’re are so disposed..
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This could get a bit messy, it looks like some of the circuitry is referenced to mains neural.
Which switches on the schematic are the ones you want to connect to your triggers?
will start with novice, dare devil, right and left turn switches.and and coin start switches. This is a 1970 wild cycle arcade game These are stand alone switches triggered by button on console that when pushed closes the switch. For these was going to install second switch insulated from game switch, but triggered by button push to wav board. I guess my other option is to use the game switch and wire directly off that through a step down buck converter to go from 24vac to 3.3 Vdc. I see inexpensive buck converters on Amazon to do this, but not sure of their quality and if the output would be smooth or rectified enough not to burn up trigger board which I read is sensitive to anything above 3.3 vdc. Found a video on pinside where the second switch option was implemented. The second switch option seems the safest. My other long term plan is the need to implement an analog signal from a potentiometer. The game has a sound board which does not work. The board provides a motorcycle engine sound which speeds up/slows down via a potentiometer hooked to throttle. The trigger board only uses digital inputs, so need to convert analog potentiometer signal to digital. Appreciate your time and any advice you may offer.
You’ll have the most flexibility if you pair the WAV Trigger or Tsunami with an Arduino, using the Arduino to interface to your hardware and sending commands to the audio board. If you don’t need more than 2 channels of audio output, a RedBoard Qwiic paired with the WAV Trigger Pro is a simple setup - just a single Qwiic cable between the RedBoard provides both power and data. The WAV Trigger Pro Qwiic Library provides a lot of control possibilities.
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