DHT11 and DHT22 temperature humidity sensor code
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Here's is some c++ and binary code I've made in order to check DHTXX humidity and temperature sensors, in case somebody need it.
Regards
checkHumidity.tar.gz
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@hugetto-hugetto Can you take a picture of your setup? That way we can try to setup the hardware the same as yours to try out the code
Thanks!
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Put that source code up on GitHub. Looks like derivative work from the AdaFruit site, which is good (+1 for code reuse).
Link to GH site please!
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Also, am able to run on 0.0.5 b244 and successfully getting data.
It should be noted that I could not get data connecting to the 3.3V, instead I had to use the 5v connector for my DHT22 device.
root@Omega-107F:~# ./checkHumidity 0 DHT22 39.900002 21.299999 root@Omega-107F:~# ./checkHumidity 0 DHT22 34.900002 20.700001 root@Omega-107F:~# ./checkHumidity 0 DHT22 35.000000 20.600000 root@Omega-107F:~# ./checkHumidity 0 DHT22 35.000000 20.600000 root@Omega-107F:~# ./checkHumidity 0 DHT22 34.700001 20.600000 root@Omega-107F:~# ./checkHumidity 0 DHT22 34.500000 20.600000 root@Omega-107F:~# ./checkHumidity 0 DHT22 34.400002 20.600000 root@Omega-107F:~# ./checkHumidity 0 DHT22 34.400002 20.600000 root@Omega-107F:~# ./checkHumidity 0 DHT22 34.400002 20.600000 root@Omega-107F:~# ./checkHumidity 0 DHT22 34.200001 20.500000 root@Omega-107F:~# ./checkHumidity 0 DHT22 34.400002 20.500000 root@Omega-107F:~# ./checkHumidity 0 DHT22 34.500000 20.500000 root@Omega-107F:~# ./checkHumidity 0 DHT22 34.400002 20.500000 --Took a deep breath on the sensor here root@Omega-107F:~# ./checkHumidity 0 DHT22 47.200001 20.700001 root@Omega-107F:~# ./checkHumidity 0 DHT22 47.299999 20.600000 --Took a deep breath on the sensor here root@Omega-107F:~# ./checkHumidity 0 DHT22 63.000000 21.000000 root@Omega-107F:~# ./checkHumidity 0 DHT22 62.000000 20.799999 root@Omega-107F:~# ./checkHumidity 0 DHT22 58.900002 20.700001 root@Omega-107F:~#
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Cool!
I'm a complete newcomer to the hardware/circuit/IoT stuff and for my first hardware project I was thinking about doing something with the Omega and a DHTXX.
I've seen some examples of the DHTXX with Arduino and Raspberry, but I'm a little clueless about how to do it with the Omega since the output voltages seem to be different (only 2.8 for the Omega).
Can you please share a picture or diagram of your setup?!
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It works!
On pin 1 and +3.3V
Screenshot:
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Mine works too!!
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I'm a C dummy, how can I use it on my onion. Is there something in Python available.
Thomas
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@Thomas-Krampe Here an example in python:
# -*- coding: utf-8 -*- import subprocess pinNumber = 8 sensorModel = 'DHT11' proc = subprocess.Popen(['./checkHumidity ' + str(pinNumber) + ' ' + sensorModel], stdout=subprocess.PIPE, shell=True) (out, err) = proc.communicate() sensor_data = out.split('\n') humidity = sensor_data[0] temperature = sensor_data[1] print "Humidity:" print str(humidity) + "%" print "Temperature:" print str(temperature) + "掳C"
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@Riccardo-Chiarini this is the script that actually uses the same application. i don't think he was looking for that kind of an example
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Hello!
I'm a real newbie and can't solve a problem. after the line checkHumidity/bin# ./checkHumidity 11 DHT11 it says: syntax error: unexpected "(" (expecting ")")
What does that mean? I'm really hopeless..
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@J贸zsef-Schuck You're using the Omega1 binaries. They don't work on the Omega 2.
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@WereCatf Where the binaries for omega2 can be found? Thanks.
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Hi all
Good news. I migrated original code successfully to work on Omega2!
See https://github.com/h0l0gram/omega2-checkHumidity for binary and source.Make sure your Omega2 has firmware >=0.1.10 b160 or it won't work.
root@Omega-1234:~# oupgrade -c > Device Firmware Version: 0.1.10 b160 > Checking latest version online... > Repo Firmware Version: 0.1.10 b160 > Comparing version numbers > Device firmware is up to date! root@Omega-1234:~#See https://docs.onion.io/omega2-docs/updating-the-omega.html
Example
root@Omega-1234:~/checkHumidity# ./checkHumidity 19 DHT22 48.299999 28.299999
