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Martin Jerry Fan Speed Controller US-FC-01

Single Gang Decora 4 Speed Fan Controller. This switch has a touch panel with LEDs behind it to indicate the fan speed. It is designed for typical 3 speed ceiling fans. As of the 10/01/2022, Martin Jerry is now offering a TASMOTA Pre-flashed model that doesn't require flashing or even a chip swap!

Pre-Flashed with TASMOTA Purchase on Amazon

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NOTE: The pre-flashed version comes with some settings already set in the default firmware on the device. I've included them all below in case the switch is upgraded to a later release of TASMOTA and set to default settings which would remove the preconfigure MJ factory settings.

Detailed video integration

Tasmota Template

None necessary. Tasmota GUI -> Configuration -> Configure Module -> Tuya MCU (54)
OR
issue a Module 54 command on the Tasmota Console.

Settings

Set the following on the TASMOTA Console

SettingDescription
tuyamcu 11,1Assign Relay1 to dpID 1

Rules

OPTION A: Does NOT turn the fan on when the speed/preset is changed:

Rule1 on TuyaReceived#Data=55AA03070005030400010016 do publish2 stat/%topic%/speed 3,0 endon
on TuyaReceived#Data=55AA03070005030400010117 do publish2 stat/%topic%/speed 3,1 endon
on TuyaReceived#Data=55AA03070005030400010218 do publish2 stat/%topic%/speed 3,2 endon
on TuyaReceived#Data=55AA03070005030400010319 do publish2 stat/%topic%/speed 3,3 endon

OPTION B: The fan turns on when the speed/preset is changed:

Rule1 on TuyaReceived#Data=55AA03070005030400010016 do backlog power1 1 ; publish2 stat/%topic%/speed 3,0 endon
on TuyaReceived#Data=55AA03070005030400010117 do backlog power1 1 ; publish2 stat/%topic%/speed 3,1 endon
on TuyaReceived#Data=55AA03070005030400010218 do backlog power1 1 ; publish2 stat/%topic%/speed 3,2 endon
on TuyaReceived#Data=55AA03070005030400010319 do backlog power1 1 ; publish2 stat/%topic%/speed 3,3 endon

Enable the rule with the following

Rule1 1

Home Assistant Integration

On the TASMOTA Web GUI -> Configuration -> Configure Other

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Set a Device Name and Friendly Name 1.(For example: Living Room Fan) Save the changes.

On the TASMOTA Web GUI -> Configuration -> Configure MQTT.

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Set your MQTT Settings: Host, User, Password and Topic. You do not need to change the fulltopic or client. Save the Settings

There are two methods for integrating the Fan Controller into Home Assistant. The auto discovery method is the easiest method but due to the size of the auto discovery packet, we are not able push over the fan preset speeds. You will still be able to change the speed and turn it on and off. The method with the presets involves manually adding the controller info into the HA configuration.yaml file. Choose the method you are comfortable with.

Home Assistant Integration (Auto Discovery)

On the TASMOTA Console of the Fan Controller paste in the following rule

Rule3
ON DeviceName#Data DO Var1 %value% ENDON
ON SYSTEM#BOOT DO backlog DeviceName ENDON
ON Var1 DO publish2 homeassistant/fan/%macaddr%_fan/config {"name":"%Var1% Fan","uniq_id":"%macaddr%_fan","stat_t":"stat/%topic%/POWER1","cmd_t":"cmnd/%topic%/POWER1","avty_t":"tele/%topic%/LWT","pct_stat_t":"stat/%topic%/speed","pct_val_tpl":"{{((value|replace(\"3,\",\"\"))|int(0)+1)*25}}","pct_cmd_t":"cmnd/%topic%/tuyasend4","pct_cmd_tpl":"3,{{((value|int(0)-1)/25)|int(0)}}","pl_avail":"Online","pl_not_avail":"Offline","pl_on":"ON","pl_off":"OFF","dev":{"connections":[["mac","%macaddr%"]]}} ENDON

Thanks to tony-fav for the conversion work on this!

Enable the Rule with

rule3 1

and restart the switch. You can enter restart 1 on the console or use the restart button on the main GUI page. Open up Home Assistant, go to Integrations, and under MQTT Devices the fan controller should now be listed.

Home Assistant Integration (w/ Speed Presets)

If you already have a fan section under the MQTT tag do not duplicate these sections in your Configuration YAML file. Don't forget to change the "fan_living_room" topic to the MQTT topic configured in your fan switch MQTT page of Tasmota from the previous steps

As of 2022.6 Home Assistant MQTT Fan configuration below:

mqtt:
fan:
- name: "Living Room Fan"
qos: 1
state_topic: "stat/fan_living_room/POWER"
command_topic: "cmnd/fan_living_room/POWER"
availability_topic: "tele/fan_living_room/LWT"
percentage_state_topic: "stat/fan_living_room/speed"
percentage_value_template: '{{ ((value | replace("3,","")) | int + 1) * 25 }}'
percentage_command_topic: "cmnd/fan_living_room/tuyasend4"
percentage_command_template: "3,{{ ((value | int - 1) / 25) | int }}"
preset_mode_state_topic: "stat/fan_living_room/speed"
preset_mode_value_template: '{{ value | replace("3,0", "turtle") | replace("3,1", "low") | replace("3,2", "medium") | replace("3,3", "high") }}'
preset_mode_command_topic: "cmnd/fan_living_room/tuyasend4"
preset_mode_command_template: '{{ value | replace("turtle", "3,0") | replace("low", "3,1") | replace("medium", "3,2") | replace("high", "3,3") }}'
preset_modes:
- "turtle"
- "low"
- "medium"
- "high"
payload_available: "Online"
payload_not_available: "Offline"
payload_on: "ON"
payload_off: "OFF"

That's it! Enjoy! If you need help feel free to pop into Discord and ask for a hand.

Bonus Home Assistant Card

HA Dashboard YAML - Utilizing the HACS fan-mode-button-row card

entities:
- entity: fan.master_fan
type: custom:fan-mode-button-row
reverseButtons: true
sendStateWithMode: true

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GPIO Layout

GPIOComponentDescription
GPIO01Tuya TXMCU Transmit
GPIO03Tuya RXMCU Recieve

Pics

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Wiring Diagram

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