DataLogger based on Arduino with 434MHz radio and BME280 sensor supplied by 3.6V battery for the transmitter and RaspberryPiZeroW & CC1101 with Python program for receiver.

Wemos d1 mini 3.0.0 med bme280

Temperature, pressure and humidity in Weyher in der Pfalz, Germany. Solar powered Wemos with BME280 connected to public Wifi "Freifunk Weyher"

Pressure IR temperature humidity Log burner Light Level

Wemos D1 mini combined with BME280 sensor measuring temperature, relative humidity and air pressure. Location: Saxony, Germany

bme280 -> PIC18F26K22 -> ESP8266 DCDC: Akizuki AE-XCL101C331BR-G 3.3V + 1000uF

Weatherstation using the ESP8266 with BME280 sensor

Real time feed from a leafcutter ant foraging sensor

Arduino UNO + Wiznet Shield measuring temperature with KTY10-6

ESP-WROOM-32 and BME280 powerd by an 6V 1W Solarpanel with an 2000mAh LiPo. The device is up for 1300ms and sleeps for 10 minutes. Current while sleep is about 11µA, and at uptime about 100mA.

Channel to monitor environmental conditions of my apartment. Channel is supplied data via an ESP8266 Wifi module which has a BME280 sensor connected to it. These are powered from a USB wall socket outlet for minimal setup/installation.

ESP-WROOM-32 on a selfmade PCB-layout with an BME280 sensor. Powered by an 1W 6V Solarcell and a 2000mAh LiPo Battery. The device is up for 1300ms and sleeps 10 minutes. The current while sleeping is about 11µA and at uptime about 100mA.

Channel to monitor environmental conditions of my apartment. Channel is supplied data via an ESP8266 Wifi module which has a BME280 sensor connected to it. These are powered from a USB wall socket outlet for minimal setup/installation.

Inside and outside temps

My own device based on ESP8266. Sensor for temp, humm and pressure is BME280. Second sensor is MH-Z19 for CO2 concentration. Device located at office or home, Moscow, Russia.