ENV Unit with Temperature Humidity Pressure Sensor (DHT12+BMP280)

Description

ENV is a environment sensor, can be used for temperature, humidity, and atmospheric pressure measurement. Build with DHT12 and BMP280.

DHT12 is a upgradation version of DHT11 humidity temperature sensor, fully downward compatible, more precise and add I2C interface. BMP280 is an absolute barometric pressure sensor especially designed for mobile applications, offers highest flexibility to optimize the device regarding power consumption, resolution and filter performance.

Product Features

• Temperature:
  • measuring range: -20 ~ 60 ℃
  • resolution: ±0.2℃
• Humidity:
  • measuring range: 20 ~ 95 %RH
  • resolution: 0.1%
• Air pressure
  • measuring range: 300 ~ 1100hPa
  • resolution: ±1hPa
• Program Platform: Arduino, UIFlow(Blockly,Python)
• Two Lego-compatible holes

Kit includes

• 1x ENV Unit
• 1x Grove Cable

Learn

Example

1. Arduino IDE

This is a ENV example, implemented reading temperature, humidity and atmospheric pressure function. 1, Before compiling, please install Adafruit BMP280 Library 2, copy Adafruit_Sensor.h to C:\Users\<user_name>\Documents\Arduino\libraries\Adafruit_BMP280_Library

The code below is incomplete. To get the complete code, please click here.

/*     Install Adafruit BMP280 Library first. */ #include <M5Stack.h> #include "DHT12.h" #include <Wire.h> //The DHT12 uses I2C comunication. #include <Adafruit_Sensor.h> #include <Adafruit_BMP280.h>  // new two objects DHT12 dht12; Adafruit_BMP280 bme;  // initialization M5.begin(); Wire.begin(); bmp.begin();  // read data float tmp = dht12.readTemperature(); float hum = dht12.readHumidity(); float pressure = bme.readPressure(); 

2. UIFlow

To get the complete code, please click here.

More information

Schematic

PinMap