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pascalw / kindle-dash

Power efficient dashboard for Kindle 4 NT devices
MIT License
1.21k stars 34 forks source link

Print last updated time and battery percentage onto the dashboard locally #13

Open coder543 opened 3 years ago

coder543 commented 3 years ago

Just an idea, but it would probably be nice to be able to see the battery percentage on the kindle dashboard... at which point, I thought "why not have the last update time shown as well?"

I added this to the refresh_dashboard function locally:

/usr/sbin/eips 1 39 "last update: $(date -Iminutes) battery: $(gasgauge-info -c | sed 's/%//g')"

Unfortunately, the built-in busybox date utility is extremely limited, so this is printing in UTC time (and not in a very nice format to begin with) and I also discovered that eips can't print the % symbol, apparently, so I'm using sed to strip that out.

Obviously a lot of room for improvement, which is why I didn't open a PR, but I figured I'd at least mention the idea.

pascalw commented 3 years ago

Hey @coder543 I looked into this as well. The downside of writing the battery percentage to the screen like this is that the font will most likely not match the other content on the dashboard. Depending on your backend you might be able to include the percentage in a request header and render it into the dashboard image, something like this:

"$(dirname "$0")/../ht" -d -q -o "$1" get \
https://raw.githubusercontent.com/pascalw/kindle-dash/master/example/example.png \
"X-Kindle-Battery: $(gasgauge-info -c)"

I'm planning to add some more 'tips and tricks' to the README, to document these kinds of us useful things you can do in the local scripts. Both methods (writing the stats locally and the header approach) could be documented there.

gandalfk7 commented 3 years ago

Just an idea, but it would probably be nice to be able to see the battery percentage on the kindle dashboard... at which point, I thought "why not have the last update time shown as well?"

I added this to the refresh_dashboard function locally:

/usr/sbin/eips 1 39 "last update: $(date -Iminutes) battery: $(gasgauge-info -c | sed 's/%//g')"

Unfortunately, the built-in busybox date utility is extremely limited, so this is printing in UTC time (and not in a very nice format to begin with) and I also discovered that eips can't print the % symbol, apparently, so I'm using sed to strip that out.

Obviously a lot of room for improvement, which is why I didn't open a PR, but I figured I'd at least mention the idea.

thank you, that was exactly what I was looking for the testing and debugging phase!