danielfaust / simpledht

Simple, Stable and Fast Arduino Temp & Humidity Sensors for DHT11 and DHT22. http://learn.adafruit.com/dht

SimpleDHT

Simple, Stable and Fast Arduino Temp & Humidity Sensors for DHT11 and DHT22.

1. Simple: Simple C++ code with lots of comments.
2. Stable: Strictly follow the standard DHT protocol.
3. Fast: Support 0.5HZ(DHT22) or 1HZ(DHT11) sampling rate.

Usage

To use this library:

1. Download the zip from specified version: https://github.com/winlinvip/SimpleDHT/releases
2. Import to Arduino: Arduino => Sketch => Include Library => Add .ZIP Library...
3. Open example: Arduino => File => Examples => SimpleDHT => DHT11Default
4. Connect the DHT11 and Upload program to Arduino.
5. Open the Serial Window of Arduino IDE, we got the result as following.

=================================
Sample DHT11...
Sample OK: 19 *C, 31 H
=================================
Sample DHT11...
Sample OK: 19 *C, 31 H
=================================

Remark: For DHT11, no more than 1 Hz sampling rate (once every second).

Remark: For DHT22, no more than 0.5 Hz sampling rate (once every 2 seconds).

Sensors

• DHT11, The product, datasheet and example, 1HZ sampling rate.
• DHT22, The product, datasheet and example, 0.5Hz sampling rate.

Examples

This library including the following examples:

1. DHT11Default: Use DHT11 to sample.
2. DHT11WithRawBits: Use DHT11 to sample and get the 40bits RAW data.
3. DHT11ErrCount: Use DHT11 to sample and stat the success rate.
4. DHT22Default: Use DHT22 to sample.
5. DHT22WithRawBits: Use DHT22 to sample and get the 40bits RAW data.
6. DHT22Integer: Use DHT22 to sample and ignore the fractional data.
7. DHT22ErrCount: Use DHT22 to sample and stat the success rate.
8. TwoSensorsDefault: Use two DHT11 to sample.

Links

1. adafruit/DHT-sensor-library
2. Arduino #4469: Add SimpleDHT library.
3. DHT11 datasheet and protocol.
4. DHT22 datasheet and protoocl.

Winlin 2016.1