Install esphome on Shelly ESP32 devices

shelly-esp32-esphome.md

Setup esphome from this PR: esphome/esphome#5535 (Code is also here)

python3 -m venv .
bin/pip install .
bin/pip install setuptools

For each Shelly:

1. Create minimal yaml with correct firmware version. Check Shelly device for exact board requirements here.

esphome:
  name: shelly-upgrade
esp32:
  board: correct-board
  framework:
    type: esp-idf
    platform_version: 6.4.0
    version: 5.1.1
wifi:
  networks:
    - ssid: "ssid"
      password: "password"
ota:
  password: ota-password
  unprotected_writes: True
logger:
web_server:
button:
  - platform: restart
    name: Restart

2. Build firmware file with bin/esphome compile path/to/yaml-name.yaml

firmware.bin can be found at: /path/to/.esphome/build/{yaml-esphome-name}/.pioenvs/{yaml-esphome-name}/firmware.bin

3. Flash the Shelly to Tasmota with Safeboot: https://github.com/tasmota/mgos32-to-tasmota32?tab=readme-ov-file#lets-start

4. Use firmware.bin file from step 1 to upgrade from Tasmota using the web interface.

5. Upgrade the partition schema: bin/esphome -v upload-factory-ota /path/to/yaml-name.yaml

6. Install actual esphome configuration normally with use_address: ip as the hostname is not correct yet.