Hello,
I’m trying to follow this guide, https://learn.adafruit.com/dht-humidity ... g?view=all, and seem to be missing something. I figure its pretty straight forward wiring but after I “sudo modprobe w1-gpio/therm” and cd to the devices directory then list I get nothing. I have restarted the RPi and with multiple configurations using various resistors even though you don’t need one with this model. Everything on the RPi is up to date. I bought a new breadboard thinking it was that and soldered the AM2302 to male wire jumpers just to make sure the connection was sound. I am about to order a new ribbon cable and Pi Cobbler Plus as mine is not from you guys. I have attached what my setup is, any insight would be greatly appreciated.
RPi B+ AM2302
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- Ap4ch3
- Posts: 4
- Joined: Wed Sep 17, 2014 7:26 pm
RPi B+ AM2302
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- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: RPi B+ AM2302
What does AdafruitDHT.py do?
- Ap4ch3
- Posts: 4
- Joined: Wed Sep 17, 2014 7:26 pm
Re: RPi B+ AM2302
I didn't get that far, I found https://learn.adafruit.com/downloads/pd ... ensing.pdf and figured I could probe the device to make sure the connections were good. Could you tell me why I need to use that if the RPi doesn't see the device?
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: RPi B+ AM2302
Have you configured GPIO?
https://learn.adafruit.com/adafruits-ra ... uring-gpio
https://learn.adafruit.com/adafruits-ra ... uring-gpio
- Ap4ch3
- Posts: 4
- Joined: Wed Sep 17, 2014 7:26 pm
Re: RPi B+ AM2302
Yes, I have done that and went through it again to make sure. And to no avail.adafruit_support_rick wrote:Have you configured GPIO?
https://learn.adafruit.com/adafruits-ra ... uring-gpio
Thank you Rick for your help so far!
- adafruit2
- Posts: 22148
- Joined: Fri Mar 11, 2005 7:36 pm
Re: RPi B+ AM2302
AM2303 isn't a w1-gpio device, so you'll never see it on the 1-wire driver. DS18B20's are 1-Wire devices.Hello,
I’m trying to follow this guide, https://learn.adafruit.com/dht-humidity ... g?view=all, and seem to be missing something. I figure its pretty straight forward wiring but after I “sudo modprobe w1-gpio/therm” and cd to the devices directory then list I get nothing. I have restarted the RPi and with multiple configurations using various resistors even though you don’t need one with this model. Everything on the RPi is up to date. I bought a new breadboard thinking it was that and soldered the AM2302 to male wire jumpers just to make sure the connection was sound. I am about to order a new ribbon cable and Pi Cobbler Plus as mine is not from you guys. I have attached what my setup is, any insight would be greatly appreciated.
- Ap4ch3
- Posts: 4
- Joined: Wed Sep 17, 2014 7:26 pm
Re: RPi B+ AM2302
Do you have any other incite for me? Maybe another guide or the correct commands to use to access it, I have looked over most of the guides from googling and havent found anything pertaining to how to access anything other then a 1 wire device. Also why is the AM2302 in this guide then? https://learn.adafruit.com/downloads/pd ... ogging.pdf Is there an update to this?adafruit2 wrote:AM2303 isn't a w1-gpio device, so you'll never see it on the 1-wire driver. DS18B20's are 1-Wire devices.Hello,
I’m trying to follow this guide, https://learn.adafruit.com/dht-humidity ... g?view=all, and seem to be missing something. I figure its pretty straight forward wiring but after I “sudo modprobe w1-gpio/therm” and cd to the devices directory then list I get nothing. I have restarted the RPi and with multiple configurations using various resistors even though you don’t need one with this model. Everything on the RPi is up to date. I bought a new breadboard thinking it was that and soldered the AM2302 to male wire jumpers just to make sure the connection was sound. I am about to order a new ribbon cable and Pi Cobbler Plus as mine is not from you guys. I have attached what my setup is, any insight would be greatly appreciated.
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: RPi B+ AM2302
The AM2302 behaves the same way as the DHT sensors. It uses a single wire for communications, but it is not a "One-Wire" device. "One-Wire" is a special bus protocol used by Dallas/Maxim chips.
Have you tried actually following the tutorial and running the python script?
Have you tried actually following the tutorial and running the python script?
Please be positive and constructive with your questions and comments.