e-paper server

Server for e-paper client.

Table of Contents

• General Info
• How it works
• Example
• Technologies Used
• Setup
• Config

General Info

I've created this app for my project that uses Raspberry pico and Waveshare e-ink screen. It allows me to display calendar (or any other image actually) from e-paper server and I can have an e-ink display in photo frame from IKEA that shows me all of my events.

How it works

1. When you call on /calendar endpoint app is getting event data from .ics files from links in application.conf file.
2. Adds those events to HTML file.
3. Gets weather data and adds it to HTML file.
4. Creates a static web page with calendar.
5. Takes screenshot of this calendar.
6. Translate it to bytes and return it as response to query.

Example

Technologies Used

• Scala
• Play Framework
• Playwright

Setup

you can create a Docker Image using sbt command sbt docker:publishLocal or fork project and use workflow to do a hard work. You only need to add DOCKERHUB_USERNAME and DOCKERHUB_TOKEN to GitHub secrets, and it will create an image and push it to docker hub.

Config

This app needs conf/application.conf file:

play.server.http.address = "0.0.0.0"
play.server.http.port = 9000

calendars = [
    {
        url = "<sample_url>",
        tag = "<sample_tag>"
    },
]

lat = "00.00"
long = "00.00"
counterStart="1990-03-01"
counterEnd="1990-03-15"
play.http.secret.key="changeme"
play.http.secret.key=${?APPLICATION_SECRET}