DHT11 wiringPi Driver

By John Chandler, created using numerouse sources

What is it

This program is an example of how to read Pressure and Temperature data from the common DHT11 sensor.

The program includes support for an illuminated switch.

Pin Usage

All pins can be changed in the .h header definitions, however the base setup is as follows:

               ---------
               | 1 | 2 |
               | 3 | 4 | +5v

Switch Write Pin | 5 | 6 | GRND Switch Read Pin | 7 | 8 | DHT11 Read/Write Data GRND | 9 | | | | |

The program uses wiringPi to access the GPIO pins, and utilises Physical pin numbering mode.