Martin FasaniSamuel Archibald
Published © CC BY-NC-SA

CALE esp32 screen manager

Screen manager Web Service and Firmware that let's you compose dynamic API mashups to feed your Displays with images

IntermediateFull instructions provided2 hours32
CALE esp32 screen manager

Things used in this project

Hardware components

Generic ESP32 IC
Espressif Generic ESP32 IC
Epaper Waveshare 7.5 800x480 b/w
Can be any of the Epaper displays supported by gxEPD library. Please make sure to get a version that comes with SPI adapter so you can connect it to the ESP32
CASE for Epaper Waveshare 7.5 800x480
My custom back-side for the CASE:

Software apps and online services Calendar Low Energy
CALE receives a request from the ESP32 and responds with the bitmap that is rendered on your Eink display
Android Studio
Android Studio
Android first release: CALE App

Hand tools and fabrication machines

Soldering iron (generic)
Soldering iron (generic)


Read more

Custom parts and enclosures

CASE for the 7.5" 800*480 waveshare/good display STL 3D model

Please find CALE cases for 7.5 Waveshare (800*480)

CASE for the 4.2 Good Display STL 3D model

4.2 Dalian Good Display case (400x300)

CASE Lilygo T5 V2.4 Eink 2.13“

This is a case for the mini T5 Firmware:


ESP32 Schematic

Please check the repository for wiring examples

Bluetooth configuration flow

Explains how the Bluetooth configuration works


CALE Eink Firmware

A very easy, almost zero-configuration, ESP8266/ESP32 E-ink calendar


Martin Fasani

Martin Fasani

1 project • 0 followers
Web developer that likes tinkering with Electronics and programming in C++
Samuel Archibald

Samuel Archibald

0 projects • 0 followers
Thanks to Jean Marc Zingg.