43 lines
1.3 KiB
YAML
43 lines
1.3 KiB
YAML
i2c:
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sda: 4
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scl: 5
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scan: true
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id: bus_a
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sensor:
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- platform: bme280_i2c
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temperature:
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name: Temp${sn}
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id: bme280_temperature
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filters:
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- offset: ${temp_offset}
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pressure:
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name: Press${sn}
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id: bme280_pressure
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humidity:
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name: HumidityRel${sn}
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id: bme280_humidity
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address: 0x76
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update_interval: 15s
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# Templates from https://esphome.io/cookbook/bme280_environment.html
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- platform: template
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name: HumidityAbs${sn}
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lambda: |-
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const float mw = 18.01534; // molar mass of water g/mol
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const float r = 8.31447215; // Universal gas constant J/mol/K
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return (6.112 * powf(2.718281828, (17.67 * id(bme280_temperature).state) /
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(id(bme280_temperature).state + 243.5)) * id(bme280_humidity).state * mw) /
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((273.15 + id(bme280_temperature).state) * r); // in grams/m^3
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accuracy_decimals: 2
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update_interval: 15s
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icon: 'mdi:water'
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unit_of_measurement: 'g/m³'
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- platform: template
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name: DewPt${sn}
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lambda: |-
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return (243.5*(log(id(bme280_humidity).state/100)+((17.67*id(bme280_temperature).state)/
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(243.5+id(bme280_temperature).state)))/(17.67-log(id(bme280_humidity).state/100)-
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((17.67*id(bme280_temperature).state)/(243.5+id(bme280_temperature).state))));
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unit_of_measurement: °C
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icon: 'mdi:thermometer-alert'
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