Hello,
I already use some M5stack products in my Home automation setup: GitHub - rhannink/M5Stack-HA-Alarm-panel: M5stack alarm panel with RFID face to control Home Assistant MQTT alarm panel
They now also sell an e-inkt display with esp32 for a reasonable price: M5STACK M5Paper V1.1 met 4.7 inch E-paper E-ink Display en Touchscreen - ESP32 - M5STACK-K049-B
Maybe something to start with.
Gr. Remco
