So the Button Expander has 8 black buttons (not white like the prototype we had in 2024). And they’re physically momentary buttons (same ones as on the Catalyst if you know that module). You can choose to map each button as latching, so you can have a button control an on/off type switch or button (press once to turn on, press again to turn off). Or you can use them as momentary.
You also can daisy chain the modules, the limit is 4.
It’s 6HP.
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oh, Id hoped the buttons were white ‘transparent’ with led behind,
so that they could have a lit/unlit state.
this would have been very useful to represent various states.
e.g. steps on a sequencer, or run/stop state, pulsing bpm for tap tempo
etc etc.
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Yeah, originally we had white LED buttons because it seems like a good idea… but a couple issues made it spiral in complexity:
- Many lights don’t have an obvious 1:1 associated button (at least not obvious to the computer)
- Lots of lights have more than one color. E.g. Red = stop, green = playing would not translate to a button
The best solution is to have a separate “light mapper”, but that added another level of complexity in the firmware that would stall the project at least a couple months more.
So we decided to go with lower cost, and basic functionality.
And, we sourced some RGB buttons that we’re playing with, so we might end up making an RGB version, but no promises!