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Lorapaper: A connected e-paper device that runs on light
- konschubert 3y agoNeat! Does it really not have any battery at all? I would suspect that adding a battery would allow to support higher current spikes, which might enable it to drive a bigger display.
- chmod775 3y agoJust a capacitor should do for that purpose? Also since this is e-paper, maybe you can just update the display incrementally.
- uxp100 3y agoIt has a supercap and a 2032. Look at the AEM10941. According to the schematic at at least. There is something that kinda looks like a battery in the images.
- gotschi 3y agoi already made a paper display using a wemos pico (has battery, charging and indicator) but this is very cool! have to charge mine every few months but also display a lot more information
- flopriore 3y agoDo you have any blog post, video or anything that shows how to build your project?
- gotschi 3y agounfortunately no, but hardware wise a exact copy of this: https://github.com/lmarzen/esp32-weather-epd https://github.com/lmarzen/esp32-weather-epd except for the wemos lolin c3 pico, very tiny esp
- edvinbesic 3y agoI have a couple of lolin boads as well I am using for development. The firebeetle board that is linked is hands down the best esp32 board due to the voltage regulator. In hibernation with only the RTC clock running I believe it only consumes 0.008mA which is coin cell worthy with a < 1% duty cycle. With the wemos boards my lowest is around 3-4mA which is still fine but considering price is the same I would recommend the firebeetle ones.
- gotschi 3y agooh, and the data i display on mine gets fetched from my homeassistant
- uxp100 3y agohttps://github.com/RobPo/PaperiNode/tree/master https://github.com/RobPo/PaperiNode/tree/master This project by the same author appears to be the same but newer?
- polygamous_bat 3y agoQuick question: where are people sourcing their e paper displays? Everytime I think of picking some up I always feel either I'm paying too much or getting too little guarantees.
- amelius 3y agohttps://www.panelook.com https://www.panelook.com Hint: click Application, then e-books.
- jareklupinski 3y agopersonally, Digikey/Mouser if I'm scoping and need to know a specific stock count ahead of time, paying the premium for some future-proofing makes sense to me in that regard for prototypes/one-offs, aliexpress or ebay are fun if you ever only need one (haven't had a DOA yet), and if you email the company directly they may get back with their 'secret menu'
- the__alchemist 3y agoThe sort used in this article is likely AliExpress or AliBaba.
- rexreed 3y agoMaybe I'm out of the loop but I never heard of the term energy-autark. Having looked up the definition, it means self-sufficient. Is there a reason for the use of the term autark?
- olive-n 3y agoAutark might be a more common word in another language the author speaks. It's a well defined word. Nothing wrong with using it.
- circuit10 3y agoThe issue is that most people won't know what it means
- dividedbyzero 3y agoProbably a German word that snuck in (the author appears to be from Germany), autark would be one of the intuitive terms in that language.
- aiilns 3y agoAutark comes from ancient greek αυτάρκης (same in modern greek) which is made up from two words αυτός (he) & αρκώ (v) which means suffice, so self-sufficient. I wasn't aware that this word existed in English but I love coming across words like these that I am not aware of, though immediately understand.