31–40 of 118 posts
I found this guide to converting an old Kindle 4 to display anything from the web super useful. https://matthealy.com/kindle I bought another 3 used kindles for $20 each after getting it to work.
thanks for sharing, this seems way faster and cheaper to build and almost as nice. Can you have the kindle mounted horizontally instead?
I found this guide to converting an old Kindle 4 to display anything from the web super useful. https://matthealy.com/kindle I bought another 3 used kindles for $20 each after getting it to work.
Thanks for sharing! This is indeed very cool. He doesn't describe the page though, is he hosting a custom page he made or he is using a service that build all the info into a page?
Edit: It is actually loading a screenshot of a custom webpage he built.
If this kind of device would come in 'off the shelf' ready to go, I'd buy one. I think e-Ink screens are really attractive to be hung on the wall. I hope we're going to see such device come to life; my bet is some successful kickstarter followed by an amazon clone with alexa built-in :vomit-face: +1 for a simple device that does one thing, and does it well.
Looks great! You inspired me to want to do something similar, perhaps in a photo frame on my desk with a to-do list. I was shocked at the price of the e-ink display though. $200?! I could buy a whole Kindle for that price.
Here is the video that gave me the idea https://youtu.be/YawP9RjPcJA
This screen is 63$
cool, but these : https://www.homedepot.com/pep/La-Crosse-Technology-Atomic-Di... are super cheap, last forever and don't require an internet connection. Sure you don't get multi day weather but that's what the weather widget on my phohne is for.
Temperature != Weather
Mentions battery life but does not say in the end how long between recharges with the 12000mah battery. Would really like to know power usage and how long between charges and more details about getting the pi to wake up once a day then sleep the rest of the time. Because if my maths right a Rpi zero running normally would drain the battery in less than full day.
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I would imagine it runs for a long time if you are only powering it on to connect to WiFi, grab weather data, render the screen, and then shut off. The PiJuice page mentions "intelligent on/off switch", but I didn't easily find any details. Hopefully intelligent means "turn on at a certain time via an onboard RTC, turn off when systemd says it's OK" and the userspace code implements that dance correctly. In the absen…
When you turn off power, it might generate some unintended signals on the MCU pins that the screen has time to interpret before shutting down. You could try setting the pins to Z state (floating) before turning off to see if it makes a difference. If you have access to an oscilloscope you can also analyze what is going on in fine details.
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I'm super excited to see the price on panels beginning to drop. $200 for a 10" panel is, for an old guy, exciting. Once they're cheap-enough, the manufacturers will come.
Me too. I just looked at the Wave-share 12.78” Red/Black/White display, and they’re listed for $178. If I weren’t juggling 4 other projects, I’d pick one up. It’s cheap enough to support all kinds of projects.
Unfortunately the fast color displays (we can buy) are not there yet. Only black & white (and grayscale) ones are fast enough to be used as somewhat generic screen you can interact with
Supporting EINK on mine could potentially help make it more visually compelling like yours, but I've done other EINK display projects in the past (see https://github.com/Mrjohns42/DoggieClock) and screen burn-in was definitely an issue.
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When you turn off power, it might generate some unintended signals on the MCU pins that the screen has time to interpret before shutting down. You could try setting the pins to Z state (floating) before turning off to see if it makes a difference. If you have access to an oscilloscope you can also analyze what is going on in fine details.
That's an idea that hadn't occurred to me. I can actually reproduce it by only removing the power for the e-ink display and not to the MCU. I think it's just a quirk of the carrier boards or something like that, but I don't know enough about the design to really debug it.