OTA a different firmware (Tasmota?) to ESPHome

ESPHome
1

Greetings,
I’m wondering if its possible to use ESPHome’s OTA Firmware Update mechanism to send a completely different firmware like Tasmota. I’m just starting to learn about ESPHome and it’d be nice to know I have a backout plan if it turns out I’m not smart enough to use ESPHome. I know I could USB re-flash the devices but I’m wondering if its possible OTA (no re-soldering, or uninstalling).
Thanks

2

Should be possible, there is a cli esphomeyaml command for uploading binaries where you specify the target ip and port which is the same the dashboard uses.

I have flashed ota esphomelib into running tasmota, but not the other way around. Been testing this week several devices I can give it a try later to go from esphomelib to tasmota

1 Like
3

You could theoretically do it by replacing the <NODE_NAME>/.pioenvs/<NODE_NAME>/firmware.bin file with the target firmware file and the running esphomeyaml something.yaml upload. Then it will upload any firmware you want.

The easier option though is to enable the web_server component, go to the ESP page in your browser and use the OTA update field. There you can select any file from your computer and upload that.

4

@OttoWinter I tried the web_server method and all worked well until it ran out of space “Update Failed: ERROR[4]: Not Enough Space”. Any ideas anyone on a minimum ESPHome FW to start with or a minimum Shelly FW to flash? I’m trying to flash a Shelly 2.5 from ESPHome back to the Shelly FW. I’m using the Shelly recovery FW shelly25.bin
Thanks

5

Not sure if it’ll help in your case, but it does support gzipped binary files (like the tasmota bin files are), so you might try gzipping your bin before OTA-ing and see what happens.

6 
esphome:
  name: miniota
  platform: ESP8266
  board: esp01_1m # shelly 2.5

wifi:
  networks:
  - ssid: 'SSID'
    password: 'password'

ota:

logger:
  level: NONE
7

This worked for me. Thanks for the suggestion. This saves having to upload a minimal firmware first. File size dropped from ~470kb to ~300kb and upload was successful.