Arduino and GY_21P sensor data to Thingspeak example shedboy71 Nov 16, 2018 In this example we connect an Ethernet shield to an Arduino, we then connect a GY-21P sensor to this and we will send the values to Thingspeak
Wemos Lolin 32 ESP32 module and GY-21P module shedboy71 Apr 12, 2018 The GY-21P is a module in that combines a BMP280 sensor and an SI7021 sensor. The on-board BMP280+SI7021 sensor measures atmospheric pressure from 30kPa to 110kPa as well as relative humidity and temperature.