MMM-dht22

Magic Mirror Module that displays temperature/humidity readings from DHT22 sensor connected via GPIO pin

Prerequisites

• tested only on MagicMirror v2.0.0
• a DHT22 temperature/humidity sensor connected to a GPIO of your Raspberry Pi
• working installation of DHT22 utility - see https://github.com/nebulx29/dht22

Download and Installation

To use this module, clone this repository to your modules folder of your MagicMirror: git clone https://github.com/nebulx29/MMM-dht22

Configuration

The module needs the default configuration block in your config.js to work.

{
	module: 'MMM-dht22',
	position: 'bottom_left',                    // the location where the module should be displayed
	classes: 'small dimmed',
	config: {
		header: 'DHT22 Sensor',                 // name to be displayed in the module
		tempUnit: 'celsius',                    // alternatively use  'fahrenheit'
		dht22gpio: 22,                          // gpio pin that the sensor is connected to
		dht22util: 'sudo /home/pi/bin/dht22',   // path to the dht22 utility
		updateInterval: 10000,                  // interval in ms to read the sesor
		animationSpeed: 0                      // animation speed
	}
}

The following properties can be configured:

Option	Description	Values	Default
header	The name that should be displayed at the top of the module Example: header: 'DHT22 sensor'	String	'DHT22 Sensor'
tempUnit	This can be either 'celsius' or 'fahrenheit'.	'celsius' or 'fahrenheit'	'celsius'
dht22gpio	The GPIO pin (wiringPi numbering) that the DHT22 sensor is connected to. Example: dht22gpio: 22	int	22
dht22util	Valid path to where the DHT22 is installed Example: dht22util: 'sudo /home/pi/bin/dht22'	String	'sudo /home/pi/bin/dht22'
updateInterval	The update interval. Determines the refresh rate in ms at which sensor is read. Example: updateInterval: 10000	int	10000
animationSpeed	Speed of animation when updates occur. Example: animationSpeed: 0	int	0