kindle-dash

the rtc clock can be told to wakeup at specific times from software, and the hardware buttons do usually.wake the device too https://github.com/pascalw/kindle-dash/blob/c83842e7561340e9...

Serial might have been a bit unnecesary here, since there are USB hacks you can exploit to achieve the same over at mobileread. You also might want to turn off some background scripts in /etc/init.rc/ such as the screensaver, unload the audio/mic, stop the window manager if you're not using it, and stop the webreader. https://github.com/pascalw/kindle-dash/blob/main/src/dash.sh

Instead of using a cronjob you can put the device into sleep and use the RTC to schedule the next wakeup (see [1]). This takes only very little power, as the device is only turned on for mere seconds and sleeps the remaining time. [1] https://github.com/pascalw/kindle-dash/blob/main/src/dash.sh...

Some Kindles can easily be jailbroken [1]. I have two jailbroken Kindle 4 devices and they're still great. Both for reading (though you have to sideload books) and as e-ink dashboards [2]. A Kindle 4 can run for ~ 28 days on a single charge, refreshing the screen every hour. [1] https://wiki.mobileread.com/wiki/Kindle4NTHacking#Jailbreak [2] https://github.com/pascalw/kindle-dash

Indeed! And with the help of PascalW's kindle-dash, I did just that with a leftover Kindle. https://github.com/pascalw/kindle-dash

I actually repurposed an old Kindle to do just that, via kindle-dash[0] Every 15 minutes it makes a cURL to an endpoint that gets my agenda, some news headlines, the weather, etc., and uses Puppeteer (I think) to return an image for the kindle to display. [0] https://github.com/pascalw/kindle-dash

The stopgap solution for this is pascalw's kindle-dash[1]. I set it up on my jailbroken kindle and now it displays some headlines, my google calendar events, and the weather (via OpenWeatherMap API) Last time it was on HN: [2] [1] https://github.com/pascalw/kindle-dash [2] https://news.ycombinator.com/item?id=25939042

Hey HN, I built this project because last year I did a terrible job of actually taking time off work and needed a way to see just how overdue I was to take a day off. Because so much is already automatically tracked in my calendar (e.g. the HR system adds calendar events for booked holiday), I just needed a way to query it to get the metrics I wanted. Originally I used a Go MySQL implementation to evaluate queries but it was a bit buggy and didn’t support all the SQL I wanted. Now I’m using a full SQLite database for each user so you can really do some gnarly queries (recursive CTEs, window functions, the works). Personally, I’m using QueryCal as a Grafana datasource to power a dashboard that’s displayed on an old Kindle on my desk (using this great project: https://github.com/pascalw/kindle-dash).

You will have to compete with much cheaper ideas like this kindle-based dashboard https://github.com/pascalw/kindle-dash discussed a while ago here: https://news.ycombinator.com/item?id=25939042