4 ms·

The recommendation from Waveshare is "refresh at least once every 24 hours"[1]. It's probably not such a big deal in reality, but maybe there's some risk of the

• mikepurvis 2y ago
  Are they “active” when set? I thought part of the point of e-ink was that it would maintain its image without power applied.
  • blixt 2y ago
    Nope, it's a completely physical process and state, so you can disconnect it and the image will remain the same. So you could use it as a reusable post card if you wanted, but for $80 maybe it's not such a good idea... I don't really know why they recommend to clear the screen after leaving the same image in for 24 hours, but I think it's mostly a precaution and most likely not a real issue. But for my own sanity, I do clear it at 2am and then it's already drawn a new image at 8am, before I'm out of bed.
    • throwaway4220 2y ago
      I had some “burn-in” on a 4 in waveshare display that lasted for about 10 refreshes. I bought it used so who knows how long it was stuck on that one screen