Flashing

Flashing is fairly straightforward. Just open it up, and solder the IO0, TX, RX, GND and VCC wires for your FTDI flash. IO0 must be connected to ground for flash mode, and can be left connected during the entire procedure. Note that you must use 3.3v.

I didn’t need to isolate or disable the MCU but, if your experience differs, it’s easily accessible on the opposite side of the board.

Also of note: The flash worked perfectly, but I couldn’t power the chip from my FTDI adapter. So you will need to put it back together before seeing the Tasmota Access Point appear.

MCU Functions

My use of this kettle is pretty straightforward, so I haven’t explored the ‘keep warm’ settings. They do look fully exposed, so it will just take some more experimentation. I’ll try to get back to this.

dpid1 is the relay. You can toggle it, but it will only heat to the temperature set. dpid2 reports current temperature in Celcius. dpid4 sets the target boil temperature. fnid 0 = 80, 1 = 85, 2 = 90, 3 = 95, 4 = 100. dpid15 seems to report current status. 1 is boiling, and 3 is maintaining temperature.

Home Assistant Integration

The ProfiCook profile has some great Home Assistant automation guidance. To get you started, SetOption66 1 and SetOption19 1, then the temperature can be reported via:

  - platform: mqtt
    name: "Kettle Temperature"
    state_topic: "tele/kettle/RESULT"
    value_template: >
      {% if value_json.TuyaReceived is defined and value_json['TuyaReceived'].DpType2Id2 is defined %}
        {{ value_json['TuyaReceived'].DpType2Id2 }}
      {% else %}
        {{ states('sensor.kettle_temperature') }}
      {% endif %}
    unit_of_measurement: "°C"
    availability_topic: "tele/kettle/LWT"
    payload_available: "Online"
    payload_not_available: "Offline"
    device_class: temperature

You can call the kettle to boil via

switch:
  - platform: mqtt
    name: "Kettle"
    state_topic: "tele/kettle/RESULT"
    state_on: "ON"
    state_off: "OFF"
    command_topic: "cmnd/kettle/TuyaSend4"
    payload_on: "4,4"
    payload_off: "1,0"
    availability_topic: "tele/kettle/LWT"
    payload_available: "Online"
    payload_not_available: "Offline"
    retain: false
    icon: mdi:kettle