On the topic of displays, I have been thinking about revisiting my CougArd Explorer idea with one of
these. They are around $79, 3.2" lcd with touch screen, 240x320, built in speaker and uSD card reader. It is a smart display, that is you write an app for the embedded graphics processer. It has 2 serial ports, one for the Cougar controller and one for my bms. The idea is to get both of these connected to the display, sending serial data to it and then program the display to, well, display it. I have downloaded their IDE and am
trying to get my head round it (UK phrase). Overall it looks good (at least on paper), only real complaint so far is the small size, but they also sell a driver board that could be connected to a larger display.
Greg