[WIP] ESPHome firmware - Githubissues

DSpeichert commented 4 days ago

The PCB can happily be operated via ESPHome firmware, which is native to Home Assistant (official ESPHome plugin is needed instead of MQTT server/bridge) thanks to its wide array of supported modules - in fact all of the ones used by this project.

This YAML currently includes support for:

Relays - to control HVAC mapped as outputs
Thermostat controller - the logic is executed locally, i.e. does not need Home Assistant to be online to operate, fully depends on AHT20 sensor for temperature
OTA updates of firmware (HA/ESPHome native)
Time sync - SNTP
Piezzo buzzer - not used
LD2410 motion/presence sensor via UART - currently not tweaked/tuned great but is used to light up the screen (like in original firmware)
AHT20 via i2c - temperature and humidity - calibration is key and offsets can be significant, I've made them configurable in the HA UI via settings
ADC light sensor - very crude but works for adjusting brightness (motion is for on/off, ADC is for brightness)
Touchscreen - displays info, touch currently only wakes up screen but is calibrated and operational
Serial improv - requires USB connection
Logging onto secondary UART or ESPHome log (can't do both)

What I tried that didn't work:

BLE-based improv protocol - takes too much RAM to operate BLE stack together with touchscreen

TODO before merging:

Making the package work (or abandon the idea and simplify the YAML)
Touchscreen buttons/menu
Stability issues (sometimes loses connectivity to HA -> is it memory/firmware or just my HA?)
Actions pipeline should build firmware without keys or WiFi password -> ready to be initialized via serial improv

smeisner commented 4 days ago

@DSpeichert Please encapsulate any code changes in the firmware with "#ifdef ESPHOME" as is already done with MATTER and MQTT.

DSpeichert commented 4 days ago

@DSpeichert Please encapsulate any code changes in the firmware with "#ifdef ESPHOME" as is already done with MATTER and MQTT.

There will be no changes to the firmware in app/ in this project. The ESPHome firmware is effectively generated with just the YAML I provided here by the esphome tool/project. Therefore, those two are completely independent in this repository.

smeisner commented 3 days ago

Yeah, makes sense ... I should've gave it some thought first!! :P

smeisner / smart-thermostat

[WIP] ESPHome firmware #57