Looks like this year ePaper projects have been popping around[1], so this is mine.<p>I made a photo frame with the intention of having a record of my family's history that can potentially outlive me. Knowing the challenges of long-lived digital projects, I consider this a moving target that will go through several iterations, but the first version showed encouraging results.<p>I wonder if anyone else is interested in having something like that in their living rooms.<p>More details: https://www.jamez.it/blog/2020/12/17/made-epaper-solar-powered-digital-photo-frame-call-solarpunk/<p>[1] https://news.ycombinator.com/item?id=22628348 https://news.ycombinator.com/item?id=22831323 and more recently https://news.ycombinator.com/item?id=25400702
Clickable link to project description: <a href="https://www.jamez.it/blog/2020/12/17/made-epaper-solar-powered-digital-photo-frame-call-solarpunk/" rel="nofollow">https://www.jamez.it/blog/2020/12/17/made-epaper-solar-power...</a>
Very nice. I'm a big fan of these types of "perpetual motion" computers.<p>The project reminds me of <a href="https://developers.google.com/gdata/articles/radish" rel="nofollow">https://developers.google.com/gdata/articles/radish</a> which was a solar cell + LCD system that showed who had booked a conference room. It had to use LCD because e-paper wasn't feasible in 2008, but someone could do something similar now with e-paper.<p>> I’d like to find a vendor who could help me design a one-piece panel that would go all around the frame, which should decrease complexity and increase efficiency. It would also be nice if the panel was black, so as to nicely tie together the white of the mat and the grayscale of the image.<p>If you opted for a black border, could you put a slightly tinted piece of glass on top of the solar cells to make them look like a generic piece of glass instead of solar cells? You would lose incoming light, but the aesthetic improvements might be worth it.
Cool project! The ARM cpu is way overkill but gets easy setup points. You could probably get away with a hidden Peltier to harvest the room vs wall temperature difference if you switched a ULP core in many of the wifi micro controllers on the market. Thanks for sharing.