@kl3m3n drop down box looks to be easier to use than the spinnable list.
grid of buttons also seems to work much faster than drawing each button individually. Just need to fine tune the size of each button and the colours, but I can set each button in the pattern initially, and also set individual buttons interactively.

I'll also have to see if I can load my settings from a CSV file, so that I think might be the last thing to test out, but looking very feasible at the moment to complete what I wanted to do.

@kl3m3n I've just returned from vacation these last few weeks. The RECG widget looks like it should work, so I'll check it out in the next few days

@granta The latest update means I can't continue without upgrading to the pro version. I'm still unsure that I can build the UI that I need

@kl3m3n I'll get some more concrete timings for you later today.

I think a drop down list would be a better and more compact solution than the spinnable list, but I'll keep playing around.

I'm using BT. The idea is to not rely on say a Wifi connection and a BT module is fairly cheap. I wanted say a phone or tablet to link with the percussion controller to change parameters and control what it does.

I like the look of the virtual mixer - quite impressive.

I'm testing GUI-O by trying to implement a user interface for a MIDI based percussion unit.

I've already got working a UI to set and assign a MIDI instrument (drum pad), and also to an 8 instrument sequencer. I used the spinnable list widget here. It works OK, but it is a bit clunky and difficult to get the right sizing though.

The 2nd part is a sequence editor, where on the x axis you have beats (usually quarter beats), and the y axis represents which instrument 'fires' during that beat. Ideally I'd like 16 beats (4 bars) by 8 instruments, so I imagined building 64 buttons on a grid and using the on pressed event to toggle whether or not an instrument plays on that beat.

I initially tried to implement the button creation in some nested loops, but it takes an extremely long time to create and render the buttons (and I cut the time back by only doing 8 beats by 2 instruments to test if it would work).

Do you have any better suggestions on how I could create this type of UI? Have a look at https://drumbit.app/ for an example of the type of thing I am looking to do.

Thanks