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Hey man, this is so cool. I hope it’s okay to plug here: I am working towards releasing a similar product for sale: https://www.invisible-computers.com/ Unfortunately the display isn’t as big as the one you chose and it isn’t battery powered. But I am starting to ship the first units, so there is that :)
If the e-ink people ever overcome their cost problem, we'll see many more products.
The main problem with e-ink is finding a display that doesn't cost 5x what an LCD of the same size would cost. This display was $179 before it became unavailable. That's on the low end for such displays bigger than phone-sized. If the e-ink people ever overcome their cost problem, we'll see many more products.
The main problem with e-ink is finding a display that doesn't cost 5x what an LCD of the same size would cost. This display was $179 before it became unavailable. That's on the low end for such displays bigger than phone-sized. If the e-ink people ever overcome their cost problem, we'll see many more products.
Just curious but is it the lack of mass production or something sinister like patents / monopoly?
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Just curious but is it the lack of mass production or something sinister like patents / monopoly?
Patents & monopoly
Hey man, this is so cool. I hope it’s okay to plug here: I am working towards releasing a similar product for sale: https://www.invisible-computers.com/ Unfortunately the display isn’t as big as the one you chose and it isn’t battery powered. But I am starting to ship the first units, so there is that :)
Love the wood bezel though; looks really nice.
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You don't really need to "hibernate"; shutting the entire system down and booting from scratch on each update is simpler and probably more reliable. The problem (hibernate or not) is getting the Pi to wake up, since it doesn't have a real-time clock. OP is using a RTC hat to achieve this. I do wonder what kind of power consumption it uses while sleeping.
what a colossal kludge. what you're trying to accomplish is basically embedded programming 101: sleep mode + wakeup timer. RTC? pff.. even any MPU on-board oscillator with no crystal has good enough PPM and lower power than an RTC. your solution is like hunting quail with a nuke.
I don't like that it takes headless chrome to render, but it _works_ and fills a need for the maker.
I'm pretty sure they looked at the stuff they'd need to write (A layout engine, a anti aliasing library, a calendar parsing library, an image handling library) and thought "fuck that, lets use a pi".
It terms of time thats weeks full time, and even then might not be possible to fit on the uCPU of choice.
just buy a realtime hat with wake up ability, for $40 max, boom job done moving to making the thing look good.
Its not a product, its someone's hobby, leave them be.
Hey man, this is so cool. I hope it’s okay to plug here: I am working towards releasing a similar product for sale: https://www.invisible-computers.com/ Unfortunately the display isn’t as big as the one you chose and it isn’t battery powered. But I am starting to ship the first units, so there is that :)
That's cool. Why not battery powered though? That seems like one of the biggest benefits of e-ink and also a wire coming out of your calendar seems like a pretty huge drawback. Love the wood bezel though; looks really nice.
Also, space. Right now the calendar is 7mm think and I think it won’t look as nice on the wall if I make it much thicker.
There are a lot of edge cases to consider. It’s definitely on my wish list but I cut it out for simplicity, for now.
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I buy old kindles for this, ~50$ per piece. they have a linux os & battery included. you get in through a serial port and a password generated for your serial number. downside is that you fight the kindle os in certain aspects. see for example: https://github.com/Neelakurinji123/kindle-weather-display
Do you have a list of compatible kindle models, and how to identify them?
the mobileread forum ist full of good information e.g.: https://www.mobileread.com/forums/showthread.php?t=267541