ESP8266 Multi Sensor BME280 (battery powerd) - T, Humidity and hPa, incl. Code

thingiverse

I started my Home Assistant instalation a few day ago and now added these sensors to it (will make a window reed contact next on the same base). The ESP ist running on the ESPhome software (you can find a good guide in how to wire up the esp12 here - http://domoticx.com/esp8266-wifi-esp-12-module-aansluiten/). For the deep sleep mode you need to connect the GPIO16 pin to reset. Otherwise the ESP will not wake up. I'm using the following code in ESPhome - for the first test you can delete the deep sleep lines at the end. With one meassurement every 10min. it should run for at least 6 month on two AA Eneloops. The ESP cunsumes ~70mA when active and 0,017mA when in deep sleep. Right now I'm waiting for the 5mm nickel stripes for proper battery contacts. esphomeyaml: name: bme280 platform: ESP8266 board: esp12e wifi: ssid: 'XXXXXXXXXXXXXXX' password: 'XXXXXXXXXXXXXXX' manual_ip: static_ip: 192.168.0.23 gateway: 192.168.0.1 subnet: 255.255.255.0 logger: api: ota: i2c: sda: 4 scl: 5 scan: False sensor: - platform: bme280 temperature: name: "BME280 Temperature" id: bme280_temperature pressure: name: "BME280 Pressure" id: bme280_pressure humidity: name: "BME280 Realtive Humidity" id: bme280_humidity address: 0x76 iir_filter: 16x update_interval: 1s - platform: template name: "Altitude" lambda: |- const float STANDARD_SEA_LEVEL_PRESSURE = 1013.25; //in hPa, see note return ((id(bme280_temperature).state + 273.15) / 0.0065) * (powf((STANDARD_SEA_LEVEL_PRESSURE / id(bme280_pressure).state), 0.190234) - 1); // in meter update_interval: 1s - platform: template name: "Absolute Humidity" lambda: |- const float mw = 18.01534; // molar mass of water g/mol const float r = 8.31447215; // Universal gas constant J/mol/K return (6.112 * powf(2.718281828, (17.67 * id(bme280_temperature).state) / (id(bme280_temperature).state + 243.5)) * id(bme280_humidity).state * mw) / ((273.15 + id(bme280_temperature).state) * r); // in grams/m^3 update_interval: 1s - platform: adc pin: VCC name: "ESP voltage" update_interval: 1s deep_sleep: run_duration: 3s sleep_duration: 600s