Controle automático de fan com Esphome

ESPHome
1

Eu uso um ESP32 + Fan adiconal para resfriar meu mini pc.
Vou deixar aqui o código que estou usando, que faz o controle de acordo com a temperatura.

  • Limite de velocidade mínima e máxima
  • Limite de temperatura mínima e máxima
  • Modo Automático e Manual

image
image396×728 22.3 KB

Obs. O fan RPM esta zerado pois subi o codigo em outra placa para poder dar uma limpada

sensor:
  - platform: homeassistant
    name: "Temperature Sensor From Home Assistant"
    entity_id: sensor.proxmox_server_ryzen_7_5700u_temperature
    internal: false
    on_value:
      then:
        - lambda: |-
            // Check if the fan is in AUTO mode
            if (id(fan_mode).state == "AUTO") {
              // Create a call to update the fan speed
              auto call = id(fan_speed).make_call();
                
                // Read the current temperature
                int temp = ceil(x);
                
                // Calculate the fan speed based on the temperature
                int speed = ceil(id(speed_min).state + ((temp - id(temp_min).state) * (id(speed_max).state - id(speed_min).state) / (id(temp_max).state - id(temp_min).state)));
                
                // Ensure the speed is within the allowed range
                
                speed = clamp(speed, int (id(speed_min).state), int (id(speed_max).state)); //  If you are using  framework: type: esp-idf
                
                //speed = constrain(speed, id(speed_min).state, id(speed_max).state); // If you are using  framework: type: arduino
                
                // If temperature is within limits, use calculated speed, otherwise set max speed
                call.set_value(temp <= id(temp_max).state ? speed : id(speed_max).state);
              
              // Execute the fan speed update
              call.perform();
            }



  # RPM Signal from Fan
  - platform: pulse_counter
    name: Fan RPM
    id: fan_rpm
    pin:
      number: GPIO26 
      inverted: true
      mode:
        input: true
        pullup: true
    accuracy_decimals: 0
    unit_of_measurement: 'RPM'
    update_interval: 5s
    filters:
      - multiply: 0.5
      - or:
        - throttle: 60s
        - delta: 50.0
      - lambda: |-
         if (x < 3100) return x;
         else return {};

output:
  - platform: ledc
    pin: GPIO18 
    frequency: 25000 Hz
    id: pwm_output

number:
  - platform: template
    name: "Fan Speed"
    unit_of_measurement: '%'
    id: fan_speed
    icon: mdi:fan
    internal: false
    max_value: 100
    min_value: 0 
    restore_value: false
    initial_value: 100
    step: 1
    optimistic: true
    mode: slider
    on_value:
      then:
        - output.set_level:
            id: pwm_output
            level: !lambda "return x/100;"

  - platform: template
    name: "Speed Min"
    id: speed_min
    icon: mdi:fan-chevron-down
    optimistic: true
    initial_value: 25 
    min_value: 20
    max_value: 100
    step: 1
    restore_value: true

  - platform: template
    name: "Speed Max"
    id: speed_max
    icon: mdi:fan-chevron-up
    optimistic: true
    initial_value: 100 
    min_value: 0
    max_value: 100
    step: 1
    restore_value: true

  - platform: template
    name: "Temp Min"
    id: temp_min
    icon: mdi:thermometer-low
    optimistic: true
    initial_value: 55 
    min_value: 0
    max_value: 100
    step: 1
    restore_value: true

  - platform: template
    name: "Temp Max"
    id: temp_max
    icon: mdi:thermometer-high
    optimistic: true
    initial_value: 85 
    min_value: 0
    max_value: 100
    step: 1
    restore_value: true

select:
  - platform: template
    name: Fan Mode
    id: fan_mode
    icon: mdi:fan-auto
    options:
     - "AUTO"
     - "Manual"
    initial_option: "AUTO"
    optimistic: true
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