Arduino temperature and humidity station with DHT11 and 1602 LCD + I2C shield

DHT11 humidity and temperature sensor is perfect for your electronics projects. i.e. weather stations, home environment control systems, and agricultural/garden monitoring systems. 

The DHT11 is a digital sensor that lets you easily get relative humidity and temperature readings in your projects. First some background information about DHT11DHT11
Technical Specifications:

  • Humidity Range: 20-90% RH
  • Humidity Accuracy: ±5% RH
  • Temperature Range: 0-50 °C
  • Temperature Accuracy: ±2% °C
  • Operating Voltage: 3V to 5.5V

There is many tutorials how to connect sensor and LCD to your Arduino. My problem was my LCD and specific I2C address that it's used I found my on eBay it's 1602 with MH on the I2C board. 

This little baby use 0x3F I2C Address instead of 0x27 like most of the boards. 

LiquidCrystal_I2C lcd(0x3F, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);

Arduino Sketch

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