pigpio-dht
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1.1.1 • Public • Published

pigpio-dht

Dht sensor control using node.js and pigpio. Supported sensors are DHT11, DHT22 and AM2302.

Installation

  1. Install pigpio C library.
  2. Install module: npm i pigpio-dht.

Usage

const dht = require('dht');
const sensor = dht(dataPin, dhtType);
Sensor dhtType
DHT11 11
DHT22 or AM2302 22

Example

const dht = require('dht');
 
const dataPin = 5;
const dhtType = 22; //optional
const sensor = dht(dataPin, dhtType);
 
setInterval(() => { 
    sensor.read();
}, 2500); // the sensor can only be red every 2 seconds
 
sensor.on('result', data => {
    console.log(`temp: ${data.temperature}°c`); 
    console.log(`rhum: ${data.humidity}%`); 
});
 
sensor.on('badChecksum', () => {
    console.log('checksum failed');
});

Methods

read()

Start a new reading of the sensor. This can't be called more then once every second for the DHT11 sensor or once every 2 seconds for the DHT22 sensor.

Events

start

Emitted when starting to read a value.

end

Emitted when the reading stops. This because it was complete, an error occurred or anything else.

result

  • result object containing temperature and humidity

Emitted when the reading was completed successful.

badChecksum

Emitted when finished reading but the checksum was invalid.

Built With

  • pigpio - Gpio wrapper for nodejs

Versioning

We use SemVer for versioning. For the versions available, see the tags on this repository.

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Install

npm i pigpio-dht

Weekly Downloads

29

Version

1.1.1

License

ISC

Unpacked Size

17.5 kB

Total Files

5

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Collaborators

  • depuits