DHT22

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DHT22

Unread postby anif zarus » Wed Sep 05, 2018 9:44 pm

Can a DHT22 sensor be used with a odroid XU4.

Technical Specification:
Model DHT22
Power supply 3.3-6V DC
Output signal digital signal via single-bus
Sensing element Polymer capacitor
Operating range humidity 0-100%RH; temperature -40~80Celsius
Accuracy humidity +-2%RH(Max +-5%RH); temperature <+-0.5Celsius
Resolution or sensitivity humidity 0.1%RH; temperature 0.1Celsius
Repeatability humidity +-1%RH; temperature +-0.2Celsius
Humidity hysteresis +-0.3%RH
Long-term Stability +-0.5%RH/year
Sensing period Average: 2s
Interchangeability fully interchangeable
Dimensions small size 14*18*5.5mm; big size 22*28*5mm
anif zarus
 
Posts: 3
Joined: Wed Sep 05, 2018 9:41 pm
languages_spoken: english
ODROIDs: odroid XU4

Re: DHT22

Unread postby tobetter » Wed Sep 05, 2018 11:10 pm

anif zarus wrote:Can a DHT22 sensor be used with a odroid XU4.

Technical Specification:
Model DHT22
Power supply 3.3-6V DC
Output signal digital signal via single-bus
Sensing element Polymer capacitor
Operating range humidity 0-100%RH; temperature -40~80Celsius
Accuracy humidity +-2%RH(Max +-5%RH); temperature <+-0.5Celsius
Resolution or sensitivity humidity 0.1%RH; temperature 0.1Celsius
Repeatability humidity +-1%RH; temperature +-0.2Celsius
Humidity hysteresis +-0.3%RH
Long-term Stability +-0.5%RH/year
Sensing period Average: 2s
Interchangeability fully interchangeable
Dimensions small size 14*18*5.5mm; big size 22*28*5mm

You might be able to refer to the link which is achieved to ODROID-C1.
viewtopic.php?f=115&t=11988
For ODROID-XU4, you have to consider a right GPIO and to use a level shifter since ODROID-XU4 uses 1.8V which is lower than 3.3V.
https://wiki.odroid.com/odroid-xu4/appl ... gpio/1wire
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ODROIDs: X, X2, U2, U3, XU3, C1


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