Soundboard Volume Zero Issue

Yes - you can work around this immediately and I can also help get a proper Mute button added to the SoundBoard(EZB) skill.

Summary

• If the SoundBoard slider no longer allows 0% in the skill UI, you can still mute the EZB speaker programmatically with Audio.setVolume(0, ezbIndex).
• You can add a simple script/button that toggles mute (stores and restores the previous volume).
• If you’d like the SoundBoard skill itself to include a Mute toggle in the UI, please post that as a feature request on the SoundBoard skill page (link below) or tell me and I’ll point you how to create a skill/patch for it.

Quick toggle-mute script (JavaScript)

• Add a Script robot skill (Project Add robot skill Script) and paste this JavaScript.
• Update ezbIndex (0 is the usual first EZ-B) if you use a different board index.

// Mute toggle for EZ-B speaker (JavaScript for ARC)
// Uses global var $SoundboardPrevVolume to store previous volume
var ezbIndex = 0;

// Get current mute flag (default false)
var muted = getVar("$SoundboardMuted", "false") === "true";

if (!muted) {
  // Save previous volume and mute
  var prev = Audio.getVolume(ezbIndex); // returns 0-200
  setVar("$SoundboardPrevVolume", prev.toString());
  Audio.setVolume(0, ezbIndex);
  setVar("$SoundboardMuted", "true");
  print("Muted EZ-B (prev volume: " + prev + ")");
} else {
  // Restore previous volume
  var prevStr = getVar("$SoundboardPrevVolume", "100");
  var prevVol = parseInt(prevStr);
  if (isNaN(prevVol)) prevVol = 100;
  Audio.setVolume(prevVol, ezbIndex);
  setVar("$SoundboardMuted", "false");
  print("Unmuted EZ-B (restored volume: " + prevVol + ")");
}

How to use the script from a button

• Add a Button control or UI element to your project.
• Set the button action to run the above Script skill (or call it via ControlCommand if you embed it differently).
• Button shows current mute state if you want - I can provide code to update a button label or toggle icon.

Notes & alternatives

• controlCommand("Soundboard v4","Stop") will stop playback but does not "mute while continuing playback" - Audio.setVolume(0, ezbIndex) mutes without stopping the track.
• If your audio is playing out of the PC (not EZ-B), use Audio.setVolumePC(volume) to change PC output volume.
• SoundBoard has its own per-track / skill slider which may be clamped in the UI; Audio.setVolume() changes the EZB hardware volume and reliably mutes output.

Want me to add:

• a version that updates a button text/icon to show Mute/Unmute?
• a version that mutes only SoundBoard skill (if you have multiple EZ-Bs or multiple outputs)?

If you want SoundBoard to have a native Mute button in the skill UI, please vote/request it on the SoundBoard(EZB) support page so the skill author can consider adding it: https://synthiam.com/Support/Skills/Audio/SoundBoard-EZB?id=16060

Tell me:

• Which ARC version and OS you’re using, and
• Whether you want EZB speaker mute or PC audio mute.

I’ll help you set up the button/script or provide an updated script that changes the button label/icon.

There's never been a volume 0 in the soundboard ezb.

Looking in SVN, the soundboard was first introduced on Tuesday, November 5, 2013 @ 12:03:32 AM Mountain time

The volume was added the same morning November 5, 2013 3:24:05 AM Mountain time and the min volume value has been 1 every since. Looks like i had late night! I'm not fully sure how volume 0 would work or what it would do but you can try it with Athena's suggestion.

Ha yup i see now what happens if you set the volume to 0 lol 

That's very odd, I swear I could use the slider to bring the volume to zero. Is it possible that it was minimum: 1 on the backend and appeared as zero in the UI (and muted the sound)? Or maybe it was changed sometime between 2013 and 2026, and then was changed recently.

I will have to look at an older version of ARC with an older version of the Soundboard to check. It's something I automatically did in the past, but I was surprised that I couldn't mute the sound any longer.

I think it's because you put it at 1 but you have to start and stop the audio for it to take effect. I tried at 1 and you can't hear it at all - u probably did that

I might be able to change the volume in real time with the new encoder that was altered for esp32. i'll have to think about that

Yeah i figured out how to do it. Next update will have real-time volume adjustment over the ezb audio protocol