Multiple DHT22 possible?
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As the title says: Can I connect more than one DHT22 to a Duet Wifi and how (mainly data line)?
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As it happens I did some work yesterday on the DHT sensor support, with a view to supporting multiple sensors in the next release.
Duet WiFi hardware designer and firmware engineer
Please do not ask me for Duet support via PM or email, use the forum
http://www.escher3d.com, https://miscsolutions.wordpress.com -
@dc42 Cool! No hurry from my side though. It was more out of curiosity and the fact that I have a few of them laying around than the actual need.
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I have implemented multiple DHT22 sensor support in my latest firmware build, however I have only one DHT22 so I can't test it.
Duet WiFi hardware designer and firmware engineer
Please do not ask me for Duet support via PM or email, use the forum
http://www.escher3d.com, https://miscsolutions.wordpress.com -
@dc42 I can test it as soon as it is released. Another question out of curiosity: how many can the Duet handle? I only have two but who knows what I am going to do in the future?!
Manuel
Duet 3 6HC (v0.6) with RPi 4B on a custom Cartesian
with probably always latest firmware/DWC (incl. betas or self-compiled)
My Tool Collection -
@wilriker said in Multiple DHT22 possible?:
@dc42 I can test it as soon as it is released. Another question out of curiosity: how many can the Duet handle? I only have two but who knows what I am going to do in the future?!
They will use the same pins as the temperature and PT100 daughter board chip select pins. So if you have no daughter boards, the maximum number you can connect to a Duet 2 WiFi or Ethernet will be 8.
