I did! Over a year ago I built a HeaterMeter with a 3.5" TFT LCD, built a little graphics library, touchscreen input and calibration transformation system, then set to work on the UI... aaaaand it was the worst. After getting so accustomed to the gorgeous displays cellphones have, a 320x240 display with extremely limited viewing angles, low contrast, and barely enough brightness to be used outdoor just was a real letdown. Most of the UI would get lost in the lack of contrast.Lol, I know you did that just for me. Everyone I ever built had 4 lines. With ll the graphics horsepower of the RasPis, you should hang an LCD off one.
An HDMI-capable board would be similarly expensive in the $40 range. HeaterMeter BOM cost=$30, Pi and display and sd card=$100? Seems a bit out of balance!
They're pretty expensive too. That one looks neat until you see that it takes 15 seconds to update the display which is unsuitable for something updating every second or more. I think all eInk displays have a very very low refresh rate, like a second or more for the larger panels. The TFT LCD even had animations (just some simple movements during touch calibration) so it would be nice to have a display that can keep up. I'd like an LCD to actually improve the the UI experience rather than just change one crippled display type to another crippled display type and taking hundreds of hours of work to make it happen.What about e-ink?
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2.7inch E-Ink display HAT for Raspberry Pi & Arduino red/black/white 3 color e paper
e Ink,e-ink,inky,e paper,epd,3 color,display,hat,2.7,SPI interface,Raspberry Pi, zero,arduino,STM32, low power,shelf label,www.seeedstudio.com