I need a small (2 inch or so) low power display for a project and gravitated to e-paper as a seemingly decent way to do this. All the marketing screams sunlight readable, but found the Waveshare devices I bought darken under even indirect sunlight. Wondering whether this is an across the board problem (my kindle doesn't) or if UV filtering is required to allow them to refresh under sunlight? If people had screens they could recommend for sunlight use it would be much appreciated!
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