Hello Everyone:
I'm setting up my system to control relays via temp and humidity readings. I bought two DHT22's, set the initial hardware setting to include Temp and Humidity and connected the sensor as instructed on the hardware page, then rebooted. The software does not appear to recognize the DHT22. I have gone to the settings page and opened the sensor for live readings and it shows the blue bar pulsing but no data or readings. I opened "show addresses" and there are 2-3 addresses that show up each time you open it. The addresses change each time I look.
Any suggestions?
Hello,
Just made some test on the SW to check if there was issues with the DHT22, but it worked as expected, so I can exclude SW issues. We can focus on the configuration or other issues.
Here some points to verify potential issues:
1) DHT22 cannot be directly connected to RPI, it need the AM2302
2) The GPIO pin should not be already used in other rows of the hardware table (exception for reading of the same sensor e.g. one for temperature one for humidity)
Regarding the Addresses, do you have other sensors with the one wire interface connected to the raspberry? The system is clearly reading addresses of devices attached to it.
NOTE: the DHT22 does not have the one wire interface.