This one does have a “math mode”, if the numbers layer key is double tapped it locks in the numbers and other “maths buttons” until the numbers layer key is tapped again.
Next I’d like to make a macro pad that has a ten key mode for “home use” with some big rotary encoders that matches the style of the Rolio (to be called Twistio).
That said, I am tempted to make a split with a number row (Rolio Max?). If I do that then there will be enough room for a 5 way stick below the roller encoder, I couldn’t fit that in this one. But this would be more for “fun” as I quite like the Corne after having used both the Sofle and Corne.
That said, it’ll need to be much later this year, I have a CNC machine on order. I’d not want to prototype something like this again without a CNC machine of my own. The process is a bit expensive, the controllers and displays are a bit pricey too IMO (though still good value given what goes into making them).