There are several directions I could go with this, and definitely limitations to be had.
I think my biggest goal is to figure out the interface to manipulate the e-ink keys. After some basic searching I did not find any hacks or similar keyboards.
The idea of having a functioning Linux terminal with display + keyboard would be the ultimate version of this... I probably won't get that far. I suspect I won't be using the phone's display, but I don't know anything about the displays used in phones of 5 years ago, either. The Edison doesn't have VGA/HDMI/etc display output, but there are some projects that use the simple TFT screens that are commonly paired with Arduinos. I'd use one of those, I figure.
To help myself make continual project, small goals are a good idea. Some of these:
- Buy an Edison and play with it!
- Create a breakout board for the keyboard, just to see if I can identify what happens when the keys are pressed. Also see if I can identify how the keyboard is powered (voltage, pins).
- Create a breakout for keyboard and/or display that lets me monitor communication with the mainboard using either an oscilloscope or a logic analyzer.