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Mission-Tags

HOWTO Install ESPhome onto Shelly Dimmer 2

Step 0: Unpack & wire up the dimmer

Unpack your dimmer and connect at least one of the L terminals and the N terminal to your mains. If you are unsure about dealing with mains voltage (danger beware), you can follow me on video here or ask someone who knows more about it.

Step1: Connect to OG Mongoose WebUI on the shelly

  • Use your phone or computer as wifi client and connect to the AP provided by the original shelly Mongoose OS firmware.
  • open http://192.168.33.1/ in your browser
  • Go to Wifi Settings and change mode to Client, give it your local (internet connected) SSID and PSK and let it connect. (You will lose your wifi connection on your client here).

Step2: Install Tasmote over MongooseOS via OTA

  • Find the IP of the shelly dimmer 2 in your routers dhcp table (my example: 10.1.10.170)
  • Next, since the shelly has internet now and you can reach it in your own wifi/lan, open a browser, copy the below URL, paste it into your browser and substitute SHELLYIP with the one you found and press enter.
http://SHELLYIP/ota?url=http://ota.tasmota.com/tasmota/shelly/mg2tasmota-ShellyDimmer2.zip

In this example my URL would look like:

http://10.1.10.170/ota?url=http://ota.tasmota.com/tasmota/shelly/mg2tasmota-ShellyDimmer2.zip

Step3: Set up Tasmota to join the network

Step4: Connect and prepare Tasmota Update

Step5: Compile a minimal firmware in ESPhome

Step6: Download and zip minimal firmware

Step6: Upload minimal firmware to Tasmota

Step7: Upload intended firmware via OTA