Linked Questions
16 questions linked to/from Reliable temperature/humidity logging with Python and a DHT11
2
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2
answers
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How can Rpi4B use python to talk to the I2C DHT20 / SHT20 temperature and humidity sensor?
I'm trying to use a Raspberry Pi 4 to read an I2C temperature and humidity sensor. The part I'm using is a module from Grove based on the DHT20 sensor. Here's a link to a page about the module:
https:/...
0
votes
2
answers
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How to check if DHT11 sensor is working
I have RPI Zero with DHT11 connected as recommended (diagram) and I was reading data from it with ~90 % success rate every 5 minutes using the old Adafruit library. But today morning it stopped ...
- 103
-1
votes
2
answers
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DHT 11 sensor not found, check wiring
I am using raspberry pi 4 model b and sensor DHT 11 for checking the humidity and temperature. When I am using the code DHT.py, the result is:
1604263139.922 4 3 0.0 0.0
1604263142.192 4 3 0.0 0.0
...
- 99
0
votes
3
answers
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Python script stops mysteriously after a few hours
The Problem
I have a raspberry pi 3b+ running a python 3.7 script that is controlling an arduino. The arduino is reading values in from a few different sensors, and sending the data back to the python ...
- 103
1
vote
1
answer
1k
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sudo python3 generates error but python3 does not
I don't understand why "sudo python3 temphumlogger2.py" triggers a module error, while "python3 temphumlogger2.py" executes no problem. Outputs below, and code below that. I want ...
- 21
1
vote
1
answer
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Python import won't succeed when script is exec() from Apache PHP
I have a Python3 script (readtemp.py) to read temperature and humidity of a DHT22. I'm using adafruit_dht module. it executes perfectly from terminal command line with:
python3 readtemp.py
or
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- 11
1
vote
2
answers
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DHT 11 - Sensor with Raspberry Pi
OK, This is a little frustrating as I am JUST trying to get the temperature/Humidity readings on my DHT 11 sensor with Raspberry pi 4 and I am unable to do so. Please see below
https://www....
-1
votes
1
answer
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Correct code to use DHT22 without a resistor?
In the comment of an existing answer that says a resistor is required, a person said that Pi's pins have in-built resistors ( https://raspberrypi.stackexchange.com/a/12162/121818 ), but it was just a ...
- 477
2
votes
0
answers
1k
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Unable to install Adafruit_DHT
Running the Adafruit install command sudo pip3 install Adafruit_DHT results in the following error:
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting Adafruit_DHT
...
- 23
1
vote
1
answer
270
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why doesn't the [dtoverlay=dht22,gpiopin=xx] way not work, when Python on pin 21 does?
Trying to get a DHT22 sensor to work on a Raspberry Pi ZERO WH running BUSTER. The demo Python program works on pin 21 (4 is in use by my DS18B20 sensors.) I tried the dtoverlay method, but I don't ...
2
votes
3
answers
184
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Cannot SSH into periphery RPis from master RPi using python script automated from crontab: Host key verification failed
Project Overview
I have a series of RPi 3B+ which collect T/RH data using connected sensors. These "periphery" units collect data every 5 minutes, append the data to a CSV file that holds a ...
- 23
-1
votes
2
answers
230
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Can sensor DHT22 be powered externally, and only read by Pi Zero W?
I am querying the DHT22 for temperature and humidity data, hooked on a Raspberry Pi Zero WH. My current setup works, and is as shown in the first picture, courtesy of the tutorial from PiMyLifeUp.
...
- 1
0
votes
0
answers
193
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AM2302 using without Adafruit Library
Hei, I am working on a project where I would like to use AM2302 for finding the humidity and temperature. I want to do this without using Adafruit libray, so i did some research and found that AM2302 ...
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-1
votes
1
answer
90
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How can I connect a dht11 that uses digital input while also using an ADC converter and the SPI bus
The source code I have below works for a two analog voltages(water level detection and temperature sensor). The code is set right now for just these two to run and it does work. If there is a problem ...
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0
votes
0
answers
70
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DHT22 RPi Zero W Accuracy not matching Arduino
I am trying to use my Raspberry Pi Zero W for an IoT project. I want to read the temperature of a room. I have the DHT22 sensor (the blue 3 pin one that has the resistors soldered onto the pcb).
I ...
