ola GH! i am trying to design a keyboard that is: 1) compact and small enough that a case can be printed using common 3d printers, i.e. within 220x220 sqr mm; b) bluetooth functionality; c) low cost / cheap; d) hotswap-able switches.
so far, i have this design:
PCB/plates length and width is within my requirements: ~215 x 79mm
...and here is where i wanted your thoughts/inputs...
a) thinnest battery i found online is 5mm thick and is only 500mA iirc. I can go bigger but will use up large area of the bottom of the board and will make this keyboard thick. How would you approach this? Settle with small capacity battery? How long do you think a 500mA will last for this setup?
b) I am also thinking of having an option to use mx switch instead of rotary encoder... or blank this area completely?
c) Micro controller is better placed on the right, correct? Easy access to on board battery port/jack.
The PCB is currently designed for 32u4 bluefruit feather
https://www.adafruit.com/product/2829 but will also accept promicro. Battery is intended to be soldered at the bottom of the PCB (top left).
TIA