Differences

This shows you the differences between two versions of the page.

--- composants:am2302dht22 [2019/08/13 19:05] – created mh
+++ composants:am2302dht22 [2020/06/01 16:35] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ====== AM2302 DHT22 Sensor ======
-Small 3-wire temperature and humidity sensor
+Small 3-wire **temperature and humidity** sensor
+{{composants:am2302-dht22.jpg?300}}
 ===== Specifications =====
+//(Source : [[https://learn.adafruit.com/dht/overview|Adafruit]])//
+  *Low cost
+  *3 to 5V power and I/O
+  *2.5mA max current use during conversion (while requesting data)
+  *Good for 0-100% humidity readings with 2-5% accuracy
+  *Good for -40 to 80°C temperature readings ±0.5°C accuracy
+  *No more than 0.5 Hz sampling rate (once every 2 seconds)
+  *Body size 15.1mm x 25mm x 7.7mm
+  *4 pins with 0.1" spacing
-===== Usage =====
+===== Usage =====
-===== Demo =====
+You can use the Adafruit DHT library.
+{{composants:dht22wiring.jpg}}
+<WRAP info>DHT22 and AM2302 often have a pullup already inside, but it doesn't hurt to add another one ! </WRAP>
-++++ Arduino Code |
+===== Demo =====
-<code c>
-</code>
-++++
+Use the basic example from Adafruit library
 ===== Ressources =====
-  *
+  *[[https://learn.adafruit.com/dht/overview|Adafruit]]