Easy wireless weather station with NodeMCU ESP8266, BME280 pressure, temperature and relative humidity I2C sensor, and a SSD1306 128x64 I2C OLED display. Using only I2C devices keeps wiring to a minimum, and integrating the NodeMCU ESP8266 with Arduino IDE allows the use of libraries that simplifies enormously the code. A Telnet server is implemented in the NodeMCU, sending weather data to the client connected, using WiFi.
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https://www.youtube.com/watch?v=6a350dyiPY0