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[Fully Supported] DHT22
#1
Hey,

i just received my DHT22 and startet to connect it to the pi.
For connecting the sensor i followd this tutorial.

with the supposed command
Code:
sudo ./Adafruit_DHT 2302 4
i get temperature values, so i guess, that the wiring and the sensor itself is working.

here's my config. I integrated it in my complete config and i can start the service without any problems.
Code:
"DHT22": {
                        "name": "Temperatur DHT22",
                        "protocol": [ "dht22" ],
                        "id": [{
                           "gpio": "7"    
                        }],
                        "humidity": 0,
                        "temperature": 0,
                        "settings": {
                            "interval": 5
                        }
                }

I do not get any updates and i don't have any idea whats going on.
Did I miss something or whtas wrong here?

best regards and thanks for your help

EDIT: Here's the right code, when the sensor is connectoed to wiringpi #7:
Code:
"DHT22": {
                        "name": "Temperatur DHT22",
                        "protocol": [ "dht22" ],
                        "id": [{
                           "gpio": 7    
                        }],
                        "humidity": 0,
                        "temperature": 0,
                        "settings": {
                            "interval": 5
                        }
                }
 
Reply
#2
The adafruit command you posted suggests that the dht22 is connected to GPIO 4, your pilight config is pointing to GPIO 7. What pin is it the dht22 connected to?
 
Reply
#3
Hey, i connected the sensor to GPIO #4 (so wiring pi 7)..
 
Reply
#4
Try wiringpi #4, based on http://wiringpi.com/pins/
 
Reply
#5
Changed the wiring, but don't get any signal in pilight. Using the command from the tutorial, i had to change the pin to 23 to get results from the terminal...
 
Reply
#6
You're mixing BCM and wiringPi pins.
 
Reply
#7
well.. pilight uses the wiringpi, so when i connect the sensor to the wiringpi #7 (BCM 4) the config i posted above should do it's job, right?
 
Reply
#8
I found the issues. Carefully compare your config with the example here: http://wiki.pilight.org/doku.php/dht22
 
Reply
#9
ah yes - i found it, too. Damn quote signs Wink

with
Code:
"DHT22": {
                        "name": "Temperatur DHT22",
                        "protocol": [ "dht22" ],
                        "id": [{
                           "gpio": 7    
                        }],
                        "humidity": 0,
                        "temperature": 0,
                        "settings": {
                            "interval": 5
                        }
                }

it works fine.
Sry for my blindness - i think i just looked too long on the code.

You can close this thread.

Thx for all your help.
 
Reply
#10
Is it possible that you've forgot to add the gui-show-humidtiy in the .c of latest commit for the dht22?

best regards
 
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