138 lines
3.5 KiB
YAML
138 lines
3.5 KiB
YAML
#<<: !include secrets.yaml
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esphome:
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name: dewpointfan
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esp32:
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board: esp32doit-devkit-v1
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framework:
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type: arduino
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# Enable logging
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logger:
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# Enable Home Assistant API
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api:
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password: !secret ota_password
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ota:
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- platform: esphome
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password: !secret ota_password
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wifi:
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ssid: !secret wifi_ssid
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password: !secret wifi_password
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# Enable fallback hotspot (captive portal) in case wifi connection fails
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ap:
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ssid: "Dewpoint Fan Fallback Hotspot"
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password: !secret ota_password
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mqtt:
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id: mqtt_client
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topic_prefix: dewpoint
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discovery: false
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broker: mqtt.fd
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port: 1883
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i2c:
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sda: 21
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scl: 22
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display:
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- platform: lcd_pcf8574
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dimensions: 20x4
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address: 0x27
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update_interval: 10s
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lambda: |-
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it.printf(0, 0, "Fan: %s", id(fan_relay).state ? "ON" : "OFF");
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it.printf(0, 1, "Temp I/O: %.1f/%.1f", id(inner_temperature).state, id(outer_temperature).state);
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it.printf(0, 2, "Hum I/O: %.1f/%.1f", id(inner_humidity).state, id(outer_humidity).state);
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it.printf(0, 3, "Dew I/O: %.1f/%.1f", id(inner_dew_point).state, id(outer_dew_point).state);
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sensor:
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- platform: dht
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pin: 25
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model: DHT22
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temperature:
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name: "Inner Temperature"
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id: inner_temperature
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humidity:
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name: "Inner Humidity"
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id: inner_humidity
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update_interval: 10s
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- platform: dht
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pin: 26
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model: DHT22
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temperature:
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name: "Outer Temperature"
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id: outer_temperature
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humidity:
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name: "Outer Humidity"
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id: outer_humidity
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update_interval: 10s
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- platform: template
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name: "Inner Dew Point"
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lambda: |-
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float A = 17.27;
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float B = 237.7;
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float temp = id(inner_temperature).state;
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float humidity = id(inner_humidity).state;
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float alpha = ((A * temp) / (B + temp)) + log(humidity / 100.0);
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return (B * alpha) / (A - alpha);
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unit_of_measurement: °C
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id: inner_dew_point
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update_interval: 30s
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- platform: template
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name: "Outer Dew Point"
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lambda: |-
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float A = 17.27;
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float B = 237.7;
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float temp = id(outer_temperature).state;
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float humidity = id(outer_humidity).state;
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float alpha = ((A * temp) / (B + temp)) + log(humidity / 100.0);
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return (B * alpha) / (A - alpha);
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unit_of_measurement: °C
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id: outer_dew_point
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update_interval: 30s
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icon: "mdi:thermometer-water"
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- platform: template
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name: "Fan state"
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lambda: |-
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uint8_t fan_state = 0;
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float deltadp = id(inner_dew_point).state - id(outer_dew_point).state;
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if (deltadp > 6.0) {
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fan_state = 1;
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}
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if (deltadp < 5.0) {
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fan_state = 0;
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}
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if (id(inner_temperature).state < 10.0) {
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fan_state = 0;
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}
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if (id(outer_temperature).state < -10.0) {
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fan_state = 0;
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}
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if (fan_state == 1) {
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id(fan_relay).turn_on();
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} else {
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id(fan_relay).turn_off();
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}
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id(mqtt_client).publish_json("sensor/dewpointfan", [=](JsonObject root) {
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root["inner_temp"] = id(inner_temperature).state;
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root["inner_humidity"] = id(inner_humidity).state;
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root["outer_temp"] = id(outer_temperature).state;
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root["outer_humidity"] = id(outer_humidity).state;
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root["inner_dewpoint"] = id(inner_dew_point).state;
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root["outer_dewpoint"] = id(outer_dew_point).state;
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root["fan_state"] = id(fan_relay).state;
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});
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return fan_state;
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unit_of_measurement: ""
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update_interval: 30s
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switch:
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- platform: gpio
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name: "Relay"
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id: fan_relay
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pin: 13
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captive_portal:
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