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I did something similar, but with photos. I managed to process everything on the device in 100% golang with imagemagick C-bindings.
As Imagemagick is also able to render text, it might be a solution for you to get rid of the need for an external server. The ARM build process happens on GitHub actions, so you can check it out.
https://github.com/landgenoot/kindle-synology-photos-photofr...
Earlier quoted context omitted.
I am referring to something like this: https://www.newnex.com/images/usb-2-a-male(UH2-AE)_small.png Isn't this called a USB-A plug? EDIT: I cannot respond to the child comment, but yes: The Device has a male USB plug, and then the cable goes right into the device, no receptacle on the device.
I think I'm misunderstanding. The device has a captive cable with a USB-A plug on the end (i.e. not a female receptacle on the device), doesn't it? Edit: I understand. I'm used to devices with receptacles rather than captive cables. Any reason why you went that way?
Also makes it easier to place it on the included stand.
Hi OP! You're writing > I use FBInk on the kindle to display the images after curling them from a API Gateway. I am the founder of this smart screen product: https://shop.invisible-computers.com/products/invisible-cale... Curling an image is the same approach that I use for my e-paper smart screen as well. It should be quite easy to bring your dashboard to my device... maybe we can work together on something? My emai…
Is there documentation on how the custom content can be rendered on this?
Some custom content just for yourself, or an app that others can install as well?
What I really want is a simply end-to-end way to program these devices to display something: basically, something as easy as QBasic, P5.js, or Scratch. What I don't want is to run a server to host something for them to display. I want it self-contained, so once made, it's alive until the device breaks. My experience is 95% of the cost of these is maintenance, and that goes away once a project is no longer new, glitzy…
I got a little screen and the demo code worked, didn't know Python well enough at the time to keep running with it (part of the motivation to learn Python in the past year). Might need some work to build a case/enclosure, but beyond that it's a little piece of hardware that does what you wish. I'm thinking similar things, some specific cases in mind.
(I can be hired to do work like this for $15/hr for the first 90 days, contact info in profile).
I did something similar with a first gen kindle. Some day it stopped working, I opened the enclosure to find a completely cracked-open kindle with a battery the size of a weather balloon inside. This was about a month after I returned from a six week trip during which I kept that thing running. Reminder that a lot of battery-powered devices really don't like to be connected to power all the time.
Also they don't like being kept in hot enclosures without adequate ventilation / cooling.
Nice project. I did something similar, but with photos. I managed to process everything on the device in 100% golang with imagemagick C-bindings. As Imagemagick is also able to render text, it might be a solution for you to get rid of the need for an external server. The ARM build process happens on GitHub actions, so you can check it out. https://github.com/landgenoot/kindle-synology-photos-photofr...
Really nice project.
The most fun part of these projects is seeing people quickly build ad-hoc renderers for E-Ink. Very quickly you find out you need render passes, dithering, debanding, etc. Here's my weather E-Ink board (which consistently gives a faster result than waiting for the iOS weather app to fetch & render): https://github.com/OmerShapira/theres-some-weather-outside
I did kind of the same thing with a LilyGo display, and it looks amazing: https://www.stavros.io/posts/making-the-timeframe/ I had to turn it into a generic signage platform first (it lets you show any image you want), and then screenshot GCal onto that image. It works really well, though. Nowadays it's an electronic power meter, which also looks great.
I didn't realise they made 4.7inch version. I find that a little small for my uses but you really did a lot with it. Nice project. I made a solar powered conways game of life with an esp32 and a 4.2 waveshare display but the whole time I wanted a few more pixels.
Hi OP! You're writing > I use FBInk on the kindle to display the images after curling them from a API Gateway. I am the founder of this smart screen product: https://shop.invisible-computers.com/products/invisible-cale... Curling an image is the same approach that I use for my e-paper smart screen as well. It should be quite easy to bring your dashboard to my device... maybe we can work together on something? My emai…