coffeeCalendar

coffeeCalendar is a linux framebuffer digital calendar made to replace a traditional wall calendar in a office space/family room.

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Features

• Automatic download & display of events from any ical download link
• Dynamic tile sizes to show all events for a given day
• Simple UI to see future events at a glance
• Runs continuously with no user input
• Ability to be drawn to a a linux framebuffer quickly with no gpu acceleration

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Building

Deps:

• cmake
• libical
• libcurl

Then run these commands to download and compile coffeeCalendar

git clone https://github.com/KaffeinatedKat/coffeeCalendar.git --recursive
cd coffeeCalendar
mkdir build && cd build
cmake ..
make

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Setting up online calendars

You can easily set up online calendars in the coffeeCalendar configuration file

coffeeCalendar looks for the config file at ~/.config/coffeeCalendar/config

Config file:

First, copy the default config file there with

cp coffeeCalendar/config.example ~/.config/coffeeCalendar/config

Getting your calendar links

coffeeCalendar downloads calendars from iCalendar links, which most online email providers give you access to.

coffeeCalendar does not support any kind of authorization when downloading, and requires a public link. These links are insecure and should never be shared with anyone

• How to obtain secret link for google calendar
• How to obtain secret link for protonmail

Adding the links

Edit the config file using your favorite text editor

The config option you're looking for is online_calendars, and it's a simple array of links:

online_calendars = ["https://notareallink.com/first_cal.ics", \
                    "http://insecurefakelink.net/second_cal.ics"]

Simply add all your links to this array

Setting up the colors

All the events are colored based on what link they came from, and setting these up is just as easy

The config option here is online_calendar_colors and it's an array of hex colors

online_calendar_colors = ["0x023E8A", "0x276221"]

Each hex color is the color that is used for the events from the link in the same order as online_calendars

online_calendar_colors and online_calendars must have the same number of elements

Customizing the refresh interval

The calendars are synced automatically every 30 minutes, this can be changed with the cal_refresh_time option

// Time in minutes
cal_refresh_time = 30

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Images

What coffeeCalendar looks like

coffeeCalendar dynamically increasing the tile size to fit all events