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

thingiverse

I started installing Home Assistant a few days ago and now I've added these sensors to it, which will make a window reed contact next on the same base. The ESP is running on ESPhome software (you can find a good guide on how to wire up the esp12 here - http://domoticx.com/esp8266-wifi-esp-12-module-aansluiten). To enable deep sleep mode, connect the GPIO16 pin to reset. Otherwise, the ESP will not wake up. I'm using this code in ESPhome - for the first test, you can delete the deep sleep lines at the end. With one measurement every 10 minutes, it should run for at least six months on two AA Eneloops. The ESP consumes ~70mA when active and 0.017mA when in deep sleep. Right now, I'm waiting for the 5mm nickel strips 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 Relative 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