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--- interfaces:dht11 [2024/05/29 12:44] – darron
+++ interfaces:dht11 [2024/11/28 07:53] (current) – [Resources] darron
@@ Line 4: / Line 4: @@
 {{:interfaces:dht11.jpg?200}} \\
 {{:interfaces:dht11-pinout.jpg?200}} \\
 </wrap>
+Humidity and temperature sensor.
+The temperature sensor is reasonably accurate but humidity
+is ludicrously inaccurate but can be used to determine humidity
+changes?
 ===RPi===
+In the past (2/1/2016) the kernel mode for reading the DHT11 did not work
+reliably or at all but in 2024 it appears to be functional but may require
+a few retries.
 ==config.txt==
 <code>
-#dtoverlay=dht11,gpiopin=17
+dtoverlay=dht11,gpiopin=17
 </code>
+==Temperature==
+<code>
+cat /sys/bus/iio/devices/iio:device0/in_temp_input
+</code>
+==Humidity==
+<code>
+cat /sys/bus/iio/devices/iio:device0/in_humidityrelative_input
+</code>
+===Resources===
+[[https://cdn-learn.adafruit.com/downloads/pdf/dht.pdf|Arduino guide]]
+[[https://www.mouser.com/datasheet/2/758/DHT11-Technical-Data-Sheet-Translated-Version-1143054.pdf|Translated data-sheet]]