E Ink Calendar Helps Keep Up with Your Family's Busy Schedule
This ESP32-controlled display shows events from your Google Calendar, plus the weather and more!
For years hacker “kristiantm” has wanted to create a nice looking E Ink calendar that can hang in the living room and kitchen area. He’s finally accomplished this goal, and due in part to the screen’s intently low-power design, it can reside anywhere with no power cable. This does, however, mean it needs to be charged every two to three months, which seem to be an acceptable trade off for this wireless versatility.
The wall-mountable device is powered by a LOLIN32 ESP32 module, and uses a nice big 7.5 inch ePaper display to show calendar entries. These components, along with an 1800mHh LiPo battery, are attached to an IKEA Ribba 13x18 frame. This frame model reportedly has a lot of room behind the screen and back plate, making it perfect for IoT projects like this one — or any other uses that you might come up with.
Events are pulled from a shared family Google Calendar via a script to help with the integration. Instructions for programming the unit are available in kristiantm's project writeup, using either the Arduino IDE or PlatformIO. Code is found here on GitHub. Aside from calendar events, there’s also a mini weather display in the corner, featuring a weather icon with the current temperature and wind speed.