dclaar
commented
4 years ago Fixed it, at a small price that you can't rotate while in the sub-modes. Setting the orientation blanks the screen, and when the code that writes the little letter ran, it would check for rotation and then erase the screen.
Occasionally, when I move the device around causing the screen to flip, it will get into a state where it's missing the background color and AQI numbers, though the heart, mode letter, heart and animated snake are still there... see pic. I can make it do this pretty consistently by rotating the device back and forth for a few seconds. Sometimes it sticks, as shown in the pic, sometimes it just flashes dark for a fraction of a second, and then goes back to normal.