Raspberry pi AirPi project images

The above images show how the dht22 is wired at present.

Following last months JAM I ordered some sensors from SKPANG and started to build an AirPi
All went fine and two sensors worked perfectly but the DH22/RH03 didn’t want to work. I ended up with all zeros as the output.

I used the software from AirPi and some from Arduino and the AIrPi gives no results just the output of the other sensors

pi@evansthepi ~/Meteoros $ sudo python Upload.py
Upload.py:72: RuntimeWarning: This channel is already in use, continuing anyway.
Use GPIO.setwarnings(False) to disable warnings.
Temp-BMP: 23.6 C
Pressure: 99760.2 Pa
Uploaded data at 2013-08-05 19:49:54.604846
Temp-BMP: 23.6 C
Pressure: 99765.2 Pa
Uploaded data at 2013-08-05 19:49:56.806157
Temp-BMP: 23.6 C
Pressure: 99763.2 Pa
Uploaded data at 2013-08-05 19:49:59.132316

and the Arduino software gives:

pi@evansthepi ~/Adafruit-Raspberry-Pi-Python-Code/Adafruit_DHT_Driver $ !!
sudo ./Adafruit_DHT 2302 4
Using pin #4
Data (0): 0x0 0x0 0x0 0x0 0x0
pi@evansthepi ~/Adafruit-Raspberry-Pi-Python-Code/Adafruit_DHT_Driver $ !!
sudo ./Adafruit_DHT 2302 4
Using pin #4 Data (0): 0x0 0x0 0x0 0x0 0x0
pi@evansthepi ~/Adafruit-Raspberry-Pi-Python-Code/Adafruit_DHT_Driver $

Can anyone help please

2 Replies to “Raspberry pi AirPi project images”

  1. Hi Paul,
    We met at Bletchley last month. Have you fixed your DHT22 issue?
    I have mine up and working recording temperature and humidity.
    Only issue I can see from the photographs is there is no connection to 3.3V GPIO pin
    on breadboard but I may be missing something. Anyway hope that helps.

  2. Glen
    Thanks for this, hope you have a good time at the MK Jam today, unfortunately I am away this weekend.
    I will double check this but thought two of the pins were attached to power one via the resistor, the third to a GPIO port.


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