Yet another DIY RPN calculator

[apoluekt]

(05-31-2021 04:10 AM)Ren Wrote:  From the photo I thought...
"Wow! He built a calculator that uses an epaper (e-ink, whatever) display!"
Only later did I read that it was LCD.

Yep, Sharp LCD is by far not e-paper, it has amazing contrast (compared to other matrix LCD displays), but only if you watch it under the correct angle.

I did experiment with e-paper on a Raspberry Pi (Waveshare 2.7" display, basically the same size), but it's way too slow, not usable for a calculator.