Continuing the discussion from Portland Retro Gaming Expo (Oct 13-15):
IMHO, there are two things that would help people wanting to make a true Arduboy, Ardudoy FX or Mini compatible DIY project. A third item would be nice to have available.
A simple ATmega32U4 breakout board that mainly just brings out all the I/O pins. Currently, most people use the SparkFun Pro Micro or clone but this means having missing features (e.g. green RGB LED and speaker pin 2), or using alternative wiring thus being non-binary compatible.
There are other boards that come closer but none are ideal.
It would be good to have a board that just includes the ATmega32U4, the clock oscillator circuitry, the USB interface, and recommended bypass capacitors. All other MCU pins of value would be brought out to breadboard compatible header pins.
Even an on-board voltage regulator wouldn’t be necessary, since Arduboys don’t use one, but it could be included to make the board more useful for other purposes. This would be a value/board size/cost tradeoff. Cost wise, it could laid out but left unpopulated.
One last consideration would be whether or not to include the USB TX and RX LEDs on-board. Again they could be laid out but, as an option, not populated.
A 1.3" SSD1306 module. You can get 0.96" SSD1306 modules and 1.3" SH1106 modules but finding a 1.3" SSD1306 module is pretty much impossible. All that’s needed is to take one of the standard 7 pin SPI 1.3" OLED SH1106 boards and replace the display with a 1.3" SSD1306 based one.
A tiny board that just breaks out to a 4 pin header the same SMD RGB LED that the Arduboys use.
@bateske, You would be someone with the resources and capabilities to make and sell these items. Is it something you might consider? You could also consider creating DIY kits that, along with the above, included other necessary “off the shelf” parts; buttons, piezo speaker, battery charge controller, RGB LED dropping resistors, flash chip module, etc. and maybe even a solderless breadboard and wires.