This incredibly cool DIY e-ink calendar uses a Raspberry Pi Zero WH to do its thing. Here’s how it works:

Through PiSugar2’s web interface, the onboard RTC can be set to wake and trigger the RPi to boot up daily at a time of your preference. Upon boot, a cronjob on the RPi is triggered to run a Python script that fetches calendar events from Google Calendar for the next few weeks, and formats them into the desired layout before displaying it on the E-Ink display. The RPi then shuts down to conserve battery. The calendar remains displayed on the E-Ink screen, because well, E-Ink…