1.. _dht:
2
3DHT: Aosong DHT Digital-output Humidity and Temperature Sensor
4##############################################################
5
6Description
7***********
8
9This sample application periodically (0.5 Hz) measures the ambient
10temperature and humidity. The result is written to the console.
11
12Wiring
13*******
14
15This sample uses an external breakout for the sensor.  A devicetree
16overlay must be provided to identify the sensor variant and the GPIO
17used to control the sensor.
18
19Building and Running
20********************
21
22After providing a devicetree overlay that specifies the sensor location,
23build this sample app using:
24
25.. zephyr-app-commands::
26   :zephyr-app: samples/sensor/dht
27   :board: nrf52dk_nrf52832
28   :goals: build flash
29
30Sample Output
31=============
32
33.. code-block:: console
34
35   *** Booting Zephyr OS build zephyr-v2.1.0-329-g38418b26c4cc  ***
36   [0:00:00.027]: 20.0 Cel ; 48.7 %RH
37   [0:00:02.053]: 19.8 Cel ; 48.7 %RH
38   [0:00:04.079]: 20.0 Cel ; 48.7 %RH
39   [0:00:06.105]: 19.8 Cel ; 48.7 %RH
40   [0:00:08.130]: 20.0 Cel ; 48.8 %RH
41   [0:00:10.156]: 20.1 Cel ; 48.8 %RH
42   [0:00:12.182]: 19.7 Cel ; 48.7 %RH
43   [0:00:14.207]: 20.0 Cel ; 48.8 %RH
44
45<repeats endlessly>
46