https://github.com/frioux/love-letter
https://github.com/frioux/love-letter
Last synced: 3 months ago
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- Host: GitHub
- URL: https://github.com/frioux/love-letter
- Owner: frioux
- Created: 2023-02-18T22:00:23.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2023-11-02T21:34:58.000Z (over 1 year ago)
- Last Synced: 2025-02-04T17:24:09.388Z (4 months ago)
- Language: Go
- Size: 56.6 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
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README
# love-letter
Love letter is a little web server that allows me to manage an eInk screen on a
pizero mounted to a little black walnut display I made for my wife for an
anniversary.
You can build the code by running `build.sh` which will build the frontend and backend
components with `npm` and `go` respectively. The system assumes some hacks have been
applied to the [PaPiRus](https://github.com/PiSupply/PaPiRus) code on the pi zero:
```diff
diff --git a/papirus/epd.py b/papirus/epd.py
index 4e0c204..679fdb7 100644
--- a/papirus/epd.py
+++ b/papirus/epd.py
@@ -177,6 +177,11 @@ to use:
if image.mode != "1":
image = ImageOps.grayscale(image).convert("1", dither=Image.FLOYDSTEINBERG)
+ test_path = os.environ.get('TEST_IMAGE', '')
+ if test_path != '':
+ image.save(test_path, 'PNG')
+ return
+
if image.mode != "1":
raise EPDError('only single bit images are supported')
@@ -206,6 +211,8 @@ to use:
self._command('C')
def _command(self, c):
+ if os.environ.get('TEST_IMAGE', '') != '':
+ return
if self._uselm75b:
with open(os.path.join(self._epd_path, 'temperature'), 'wb') as f:
f.write(b(repr(self._lm75b.getTempC())))
```
This patch allows us to easily generate the image that will be written to the screen
without doing a lot of surgery.
## HACKING
The UI functions almost totally in isolation, so if you want to tweak
the UI changedir into `fe` and run the npm dev server:
```bash
$ cd fe
$ npm run dev
```
That will start up a server to automatically detect and recompile the frontend
components.