https://github.com/davidhampgonsalves/life-dashboard
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E-Iink based dashboard for every day life
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Latest commit
@davidhampgonsalves
davidhampgonsalves display sun rise/set in local time
...
38f513f Sep 25, 2023
display sun rise/set in local time
38f513f
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.cargo
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August 24, 2018 12:17
cmd/main
v2 rewrite
September 23, 2023 11:28
pkg
display sun rise/set in local time
September 25, 2023 09:36
static
v2 rewrite
September 23, 2023 11:28
.gitignore
v2 rewrite
September 23, 2023 11:28
README.md
v2 rewrite
September 23, 2023 11:28
deploy.sh
v2 rewrite
September 23, 2023 11:28
example.jpg
v2 rewrite
September 23, 2023 11:28
go.mod
v2 rewrite
September 23, 2023 11:28
go.sum
v2 rewrite
September 23, 2023 11:28
install.sh
v2 rewrite
September 23, 2023 11:28
life-dashboard-init
disable unused calendar
June 14, 2022 10:23
main.tf
v2 rewrite
September 23, 2023 11:28
start.sh
v2 rewrite
September 23, 2023 11:28
View code
[ ]
Life Dashboard Details V2 Rewrite and Compromises Deploy (via
Terraform) Run Locally Setup Jailbreak and Setup SSH SSH over wifi
Install Copy books to Kindle vis SCP Frame Notes
README.md
[example]
Life Dashboard
Low power, heads up display for every day life running on a Kindle.
Details
Second hand Kindles are waiting in drawers for someone to repurpose
them into something great. Boasting large e-ink screens, wifi
connectivity and ARM processors they are an amazing hacking platform.
(This is the second version of this project, see the post about the
original here)
V2 Rewrite and Compromises
Ideally this dashboard would generate and display its image on its
own. The issue with doing this originally was that the Kindles
ability to display images (via eips) requires they be in a strange
format. A few yars back when I started this it was hard to get GoLang
to generate this format but it was easy to cross compile GoLang to
the target ARM-7 softfloat arch. On the other hand Rust could
generate the image but it was a pain to setup the cross compiler
toolchain (also connecting to Google API's wasn't well supported).
In the 5 years that followed the dashboard was a great tool but as
API services would die (Magicseaweed, Forecast.io, DarkSky, etc) it
would break. Sometimes that would require changes to the Rust front
end and I would have to setup the cross compiling toolchain on each
new machine I was using and eventually this got annoying.
I found out about FBInk which has Go bindings and decided that using
that I could use it to do text layout and print the resulting PNG's
to the screen. Unfortunately I found that GoLangs OpenFont lib
crashes when run on the kindle and that these old arm archetectures
aren't well supported. This seemed like an unstable footing to build
on.
This led me to my current compromise. I use FBInk on the kindle to
display the images after curling them from a API Gateway/Lambda
backend. This gives me a low friction way to update the API logic
without needing to touch the kindle or cross compile anything. I also
was able to use GoLangs tdewolff/canvas which provides nice text
setting and image generation tooling. I think is the right balance to
keep this device productive for another 5+ years.
Deploy (via Terraform)
./deploy.sh
Run Locally
go test -c -o ldb.test ./pkg/ && ./ldb.test && open ldb.test.png
Setup
Jailbreak and Setup SSH
See (https://wiki.mobileread.com/wiki/Kindle4NTHacking) and if
bricked then use Kubrick in VM to restore.
SSH over wifi
Hold power button till light flashes, then press power button a few
times to restart back to normal e-reader mode. SSH server will be
running and wifi will auto connect.
Install
* Install Fbink.
* Setup Wifi on Kindle and then run install.sh.
Copy books to Kindle vis SCP
scp book.mobi root@192.168.15.244:/mnt/base-us/documents/
dbus-send --system /default com.lab126.powerd.resuming int32:1
Frame
3D printed using wood filled filliment - https://www.thingiverse.com/
thing:2536906
Notes
The mobileread forumn is the place for mobile reader hacking.
I could have avoided the backend of this project and only used the
Kindle but I had already created it for another project and saved
time to reuse it.
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E-Iink based dashboard for every day life
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* HCL 27.5%
* Shell 11.9%
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