Simple 4-zone self-made thermostat 🙂 Works autonomously or in Zigbee, integrated with Home Assistant - no automation just an external converter had to be added. STM32 microcontroller, DS18B20 sensors (I will probably add external sensors from HA) 2.9 inch e-paper display. I am interested in your opinions.
As for the displays themselves, I've written a tool to configure them 