DHT22, RHT22 - Temperature & Humidity Sensor

[Wolfgang_Z.]

Sensor Type: DHT22, RHT22 - Temperature & Humidity Sensor

LabVIEW or C: LabVIEW

Version of LV: 2015

Description:

DHT22 is a composite sensor contains a calibrated digital signal output of the temperature and humidity.

DHT22 sensor uses a single-wire bi-directional protocol.

Download DHT22 datasheet from web for more information and specifications.

Instructions:

The API is implemented on FPGA.

To get the measured temperature and humidity values from DHT22 use 'DHT22 Read (FPGA).vi' in API folder from 'DHT22 (FPGA).lvlib.

There is also 'Example - DHT22 (FPGA).vi' in Example folder. The 'Example - DHT22 (FPGA).vi' must be compiled in order to be used from the FPGA Interface.

Wiring Diagram: