Did you by any chance copy/paste the code (including some smart quotes)? . I had this same error and my fix was just where I ran the Python script from. Traceback (most recent call last): humidity, temperature = read(sensor, pin, platform) https://projects.drogon.net/wiringpi-pin-numbering/, A strange design decision indeed And even more strange is that the author still stands by his original choice, and recommends using that numbering :). Did you get your data not good, skip issue? Complete Python Tutorial. Works for me! }. import Beaglebone_Black Hes using them to control the brightness and contrast of the LCD screen. Raspberry Pi wiringPi DHT11 Temperature test program It was very helpful. Troubleshooting Adafruit library issues on raspberry pi. HI, Hello, ImportError: cannot import name Raspberry_Pi_Driver, If not, I will try downloading the library etc again. IIRC, any microSD card of more than 2 GB will work. Use the following wiring diagram if you have a DHT11 or DHT22 module with an integtated pull up resistor. I dont need to see far away back but if I can see what was the temperature / humidity couple days ago I will be glad (it a projet for my cheese cave). Connect the LCD and DHT11 sensor to the 5V pins on the Raspberry Pi. Are you having a problem? But I didnt see what you use to complet your projet. Do you have a tutorial of how to link the data w get from the dht 11 to thing speak using websocket and django frame work? Save my name, email, and website in this browser for the next time I comment. File Tempreture.py, line 7, in Value error : unknown format code f for object of type str Use GPIO.setwarnings(False) to disable warnings. Thanks for the correction to the code. Im using Raspbian as OS and all I can do is to turn on and off leds nothing more. Any idea how we can resolve this? According to the DHT11 datasheet, power supply can be 3 to 5.5V, so it should work at 3.3V as well. j++; import Beaglebone_Black_Driver as driver I found a 5 X 7 cm. May be a fault with the sensor more than the programming. HI, I am trying to use the C example with a DHT11, I have checked that I have wired it up correctly with a multi meter. This library works with both the DHT22 and DHT11 sensors. Sorry if this is a newbie question, but Im just curious why did you power the DHT11 at 5V? Mike has created all kinds of projects that you can follow and build yourself, from many different styles of retro arcade cabinets to Arduino and Raspberry Pi projects. It isn't the fastest sensor around but its cheap price makes it useful for experimenting or projects where you don't require new readings multiple times a second. https://github.com/adafruit/Adafruit_Python_DHT, hello my beloved tutorial i want to ask you one question. Getting below error when trying to run LCD script, can anyone help? }, while ( 1 ) Isnt it better to use DHT22? I have a RaspberryPi 3 B, https://www.ebay.com/itm/DHT11-Digital-Temperature-and-Humidity-Sensor-Module-for-Raspberry-Pi-Arduino-/290960723731, https://www.ebay.com/itm/LCD-1602A-162-Zeichen-Display-Blau-Schwarz-HD44780-LCD1602-Arduino-Raspberry/142613981942?hash=item213474aaf6:g:rY4AAOSwAHBaJQfg, https://www.ebay.com/itm/Freenove-Gas-Sensor-Board-for-Arduino-Raspberry-Pi-3-3V-5V/302027776550?hash=item4652422226:g:BIEAAOSw0fhXli9a and https://www.sparkfun.com/products/11769 . The wiring seems correct. pi@raspberrypi ~/Adafruit_Python_DHT $. Step 1: Open the terminal and use the following command to install Git. It's fairly simple to use but requires careful timing to grab data. thanks! So, my setup went the same as others with the check the cable error, but it would show temp and hum several times, and back to check cable. So I guess my jumper cable wiring is correct and my GPIOs are still functional. *** Now get_platform() only returns that it is a raspberry pi 2. from . It works in python // DHT22 ImportError: cannot import name Raspberry_Pi_Driver, Can anyone make a suggestion?? Amazing tutorial I learned a lot with it. File /usr/local/lib/python2.7/dist-packages/Adafruit_DHT-1.3.1-py2.7-linux-armv7l.egg/Adafruit_DHT/common.py, line 77, in read Or, even better, you can run your program periodically using cron. import sys 4) If you want to solder the completed project, you will also need some kind of PCB to solder everything onto. IS the sensor supposed to heat up?? In this case I entered BCM pin number 26 which corresponds to wiringPi pin 25. Raspberry Pi camera module DHT11 sensor with 4.7k Ohm resistor USB WiFi dongle Adafruit Cobbler Kit Jumper wires Breadboard Check if you already have a Linux Distribution installed on your Raspberry Pi. File build/bdist.linux-armv7l/egg/Adafruit_DHT/common.py, line 81, in read from . >>> Thank you, Mine shows temperature 11.0C and humidity 150%. solution but I had the same issue and was able to get it working by using the following command sudo pip3 install Adafruit_DHT --install-option="--force-pi" Share. } Well I have the + to PIN 2, to PIN 9 and OUT to pin 7. I running Python 3.5 on a RPi 3B+ . Show verbose output during compilation I guess. i would be really grateful i anyone could help me getting it work :<. These sensors are popular for usein remote weather stations, soil monitors, and home automationsystems. Mayhaps thats why so many are having troubles with the program? import Raspberry_Pi_2 Before that, we need to install Git if you are not installed. import Raspberry_Pi_2_Driver as driver All the best! Rocking the python code! To install the RPLCD library, we first need to install thePython Package Index, or PIP. platform = get_platform() There is only the sensor and the Raspberry. You can record them, but you will need to write your own code for that. #!/usr/bin/python When I look at wiringpi documentation pin 25 doesnt exist. You can use the commands below if your device returns "None" values. The next pin across is the data pin which must be connected to a GPIO pin on the Raspberry Pi. Hi, this is Jay, very thanks for sharing your project. Any idea what went wrong? Please let me know, how solved this? I tried reintalling from the complete instructions in the article. I never worked with Raspberry, this is my first time but its not like I dont know what I do. I get the following error message when i run the script: Python 3.7.3 (/usr/bin/python3) The DHT11 is a low-cost temperature and humidity sensor. https://www.mouser.com/ds/2/758/DHT11-Technical-Data-Sheet-Translated-Version-1143054.pdf. File /home/pi/Adafruit_Python_DHT/Adafruit_DHT/common.py, line 55, in get_platform File /usr/local/lib/python3.7/dist-packages/Adafruit_DHT/Raspberry_Pi_2.py, line 34, in read File /home/pi/Adafruit_Python_DHT/Adafruit_DHT/Raspberry_Pi_2.py, line 22, in / 5. is there any solution for that ? File /usr/lib/python2.7/zipfile.py, line 770, in __init__ And of course humility. Have integrated Raspberry pi4 with a DHT sensor. Traceback (most recent call last): the pi 4 gives the wrong answer. May I know which file should I run after executing sudo python setup.py install command??? TypeError: this constructor takes no arguments. But there is no wiringpi number above 20? In case anyone else wants to use it, its below. hi, thanks for this tutorial i learned a lot about raspberry pi. printf( Humidity = %d.%d %% Temperature = %d.%d C (%.1f F)\n, Hey it works! ValueError: Expected DHT11, DHT22, or AM2302 sensor value. Humidity = 1.74 % Temperature = 0.201 C (32.0 F) Have tried connecting the VCC to both 3.3V and 5V. Connect a 10K pullup resistor from this pin to 3.3V. These sensors are popular for use in remote weather stations, soil monitors, and home automation systems. Ill come back as soon as its done. It looks like there was a problem with the library install. humidity, temperature = Adafruit_DHT.read_retry(11, 17), lcd.cursor_pos = (0, 0) File ./lcd.py, line 6, in sudo apt-get install build-essential python-dev. Should work exactly the same. Please search the comments (Ctrl-F, and type driver, for example) you will find possible solutions. What should i do? I tested the Python version and it runs without any issues with the same wiring. One is a three pin PCB mounted module and the other is a four pin stand-alone module. I have the same error as you. We recommend powering from 5V (sometimes 3V is not enough) - this is OK even if you are using 3.3V logic The second pin is data. Well, I think there are two resistors, but on the other side of the sensor, comparing to the image. Have tried with both Adafruit_DHT.DHT11 and Adafruit_DHT.DHT22 in the code for the same sensor but I get None None File DHT11_LCD.py, line 7, in with ContextualZipFile(filename) as archive: I would strongly recommend that you read some getting started guides, and work on some simpler projects (like blinking a LED connected to a GPIO) before tackling this one. (dht_dat[4] == ( (dht_dat[0] + dht_dat[1] + dht_dat[2] + dht_dat[3]) & 0xFF) ) ) Running the sample Python code that outputs to the shell, I get: Temp: 1.0 C Humidity: 0.0 % repeatedly regardless of the temp or humidity. In this tutorial, I'll show you how to connect the DHT11 to the Raspberry Pi for output to an SSH terminal or to an LCD, then give you some example programs for programming it with either C or Python. ? Im just another user trying to help people out :). And your own code to recall and display previous values. Im getting the same error like you. >>>. Thought I posted immediately but apparently not. import RPi.GPIO as GPIO, lcd = CharLCD(cols=16, rows=2, pin_rs=37, pin_e=35, pins_data=[33, 31, 29, 23], numbering_mode=GPIO.BOARD). This is what Im running to : I have the 3 pin version. I would like to ask how I going to use SNMP to trigger an email when the temperature hit the minimum/maximum require? File /usr/local/lib/python2.7/dist-packages/RPLCD/gpio.py, line 95, in __init__ look like a kind of buzzer. Traceback (most recent call last): Its really excellent. Alternatively, we can install this library using below Linux command by using terminal window. (again, works fine in python), : from datetime import datetime #import datetime module Your email address will not be published. File /usr/local/lib/python3.7/dist-packages/Adafruit_DHT/common.py, line 94, in read_retry Posted by Scott Campbell | Raspberry Pi | 177. delay( 1000 ); Here and there I still getting data not good. /usr/local/lib/python2.7/dist-packages/RPLCD/lcd.py:213: RuntimeWarning: This channel is already in use, continuing anyway. With DHT11 Python, Can you help me? using its own 3.3V output as the maximum input signal), and that anything above that, including 5V, could permanently damage the Pi. +3.3v, ground and one GPIO pin. File /home/pi/Adafruit_Python_DHT/Adafruit_DHT/common.py, line 48, in get_platform i have this sensor, does it work with rasberry pi b ? if (device == 11) { 0. . The DHT11 temperature and humidity sensor is a nice little sensor that provides digital temperature and humidity readings. { Most current Linux distributions come with python3 out of the box, and that requires a different syntax. from . its the very first generation. Yes return platform.read(sensor, pin) If i use the programs .py in examples folder, all its ok. I remember reading that the GPIO on the Pi 3 no longer required root. Create a new file called dht_simpletest.py . Not clearCan you please clarify why is that in the Video you connect the VSS to -, Vdd to +, and in the scheme its the other way around? humidity, temperature = read(sensor, pin, platform) I commented out (#) else and print lines, and it works flawlessly. File build/bdist.linux-armv7l/egg/Adafruit_DHT/common.py, line 94, in read_retry humidity, temperature = Adafruit_DHT.read_retry(11,4) File /home/pi/Adafruit_Python_DHT/ez_setup.py, line 140, in use_setuptools File /home/pi/Python Scripts/Exampletemp.py, line 9 Our code can use any GPIO pin, but we'll be using GPIO #4 for our diagrams and code. To read the data from Adafruit_DHT11 sensor on Raspberry PI using python code we need to install the Adafruit_DHT library . Das Tutorial von Adafruit mag ein beliebtes Tutorial sein, aber die eigentliche Softwareimplementierung ist vielleicht nicht die beste (Achtung, ich habe meine eigene Softwarelsung und sollte daher nicht als unparteiisch betrachtet werden). Instead of infinite loop the measures, how can I read and present just one measure. That should about cover most of what youll need to get the DHT11 up and running on your Raspberry Pi. I could not get the C code to work, however, the Python worked well. The examples below are stand-alone C programs, which will need to be saved to a file with a .c extension, then complied by entering this at the command prompt: gcc -o example example.c -lwiringPi -lwiringPiDev. Hi, I am a newbie please be gentle :) I can get this to run to display on the terminal but cant get it to display on the LCD display. } Could someone tell me what is problem? import Raspberry_Pi_2 ^ } else { avrdude: ser_send(): write error: Bad file descriptor File th2.py, line 17, in Its a stray character from the editor you used for the code. pip3 install adafruit-circuitpython-dht sudo apt-get install libgpiod2 To make sure you've installed everything correctly, we're going to test that we can read values from the DHT sensor connected to your device. from . if ( counter > 50 ) Raspberry Temperature Humidity. File test.py, line 8, in humidity, temperature = Adafruit_DHT.read(DHT_SENSOR, DHT_PIN) Programming the DHT11 and connecting it to a Raspberry Pi is pretty simple too. . In the video it says GPIO 26 pin 37??? I made the correct connections. Maybe a really stupid question but better asked. You can download the libraryusing Git, so if you dont have Git installed on your Pi already, enter this at the command prompt: Note: If you get an error installing Git, run sudo apt-get update and try it again. import sys Thats all I am getting for output. First, we capture the temperature and humidity to two aptly named variables, and then use an IF statement to check to see if it worked. Cheers, A. Ok this is the quick and dirty as to why. :), ((((could u make it to send results in our desired regular intervals of time to our mentioned mail from this below program)))), print Temp: {0:0.1f} C Humidity: {1:0.1f} %.format(temperature, humidity). File /home/pi/Adafruit_Python_DHT/ez_setup.py, line 88, in __new__ printf( Data not good, skip\n ); Works fine with python, but i keep getting either data not good, skip or it works but all values are zero. float f; hum = (dht_dat[0] * 256 + dht_dat[1]) / 10.0; lcd.cursor_pos = (1, 0) Thank you. File /home/pi/Adafruit_Python_DHT/Adafruit_DHT/common.py, line 94, in read_retry int main( int argc, char **argv ) You can use them to capture the temperature of your Pi when its in an enclosure in the hot summer heat, or you can use it to check on the temperature of room in your house when youre out of town. 2007-2023 The Geek Pub, LLC. cd Adafruit_Python_DHT. I did every step mentioned above in the tutorial (with the C part) but still no result. hi, Thanks for the tutorial. Improve this answer. lcd.write_string(Humidity: %d %% % humidity). got it working. avrdude: ser_send(): write error: Bad file descriptor Can the Adafruit DHT22 library be modified to support Raspberry Pi 4 Model B (BCM2711)? int pin = 0; //printf(argc: %d\n, argc); avrdude: ser_send(): write error: Bad file descriptor Hello, Need help in RaspberryPi-3. File build/bdist.linux-armv7l/egg/Adafruit_DHT/Raspberry_Pi_2.py, line 34, in read lcd.write_string(Humidity: %d %% %humidity), pi@piadi:~$ python dhtlcd2.py cd /usr/local/lib/python3.7/dist-packages/Adafruit_DHT print Temp: {0:0.1f} C Humidity: {1:0.1f} %.format(temperature, humidity) well, I will love to see what going one with the temperature and humidity so the LCD screen should be good for me. DHTTEST.c:59:1: error: expected expression before } token Maximum is 8192 bytes. dht11_dat[j / 8] |= 1; How the heck do you read digital input for that sensor? Im getting ready to set this up for my green house to monitor heat and humidity. time.sleep(60); Shell: I tried the following code into my Respberry pi 3 and it says, Traceback (most recent call last): Hope this made it easier for you. Interfacing DHT11 sensor with Raspberry Pi to collect Temperature and Humidity data from nearby environment. . File humiditemp.py, line 7, in The sensor should continue outputting data after a second or so. Raspberry doesnt have any digital or analog output. Im trying to add actual time to code, but I get actual time just once, then is always the same time with correct temp./hum. The problem doesnt seem to be only at me, I made some research and there are plenty of people complaining about exactly the same problem. f = temp_c * 9. Is something wrong with my sensor? import sys its a raspberry pi 4. in the common.py code it preforms a board check it comes back as 2 this is a beagelbone answer. I get this little import error on the module RPLCD but it claims to be installed , pi@raspberrypi ~/Adafruit_Python_DHT $ sudo pip install RPLCD / 5. and this script is working and can see information on screen but for me is important to make temperature and humidity so i can have thermometer in my 3d printer enclosure.. Are your pin numbers BOARD pin numbers or BCM pin numbers? Right now, the only other advice I can give you is double- and triple-check all your wiring. RuntimeError: Error accessing GPIO. ImportError: cannot import name Raspberry_Pi_2_Driver. And what OS should I use / boot on this card? Is there a way to code this simply so it shows live on the android app? I am using a Rasperry Pi3 B+. lcd.cursor_pos = (0, 0) This is to ensure that you have a completely functional Pi. humidity, temperature = read(sensor, pin, platform) import Raspberry_Pi This line defines the sensor object we will use, and the next line is a variable that defines the GPIO pin we are using. def get_platform(): The DHT11 is a basic, ultra low-cost digital temperature and humidity sensor. This report would have more information with Wiringpi documentation pin 25 resistors, but on the android app the measures, how I... What I do should about cover most of what youll need to get the C )! You power the DHT11 datasheet, power supply can be 3 to 5.5V, it. Next time I comment from the complete instructions in the sensor more than the programming will.. That provides digital temperature and humidity sensor is a three pin PCB mounted and. Try downloading the library install GPIO pin on the Raspberry this channel is already in use, anyway. Double- and triple-check all your wiring use the following command to install the RPLCD library, we first need write! For the next time I comment Hello, ImportError: can not import name Raspberry_Pi_Driver, if not I... Downloading the library install quick and dirty as to why import Raspberry_Pi_2 Before that we! But im just curious why did you by any chance copy/paste the (. This case I entered BCM pin number 26 which corresponds to wiringPi 25! Install thePython Package Index, or PIP as driver I found a 5 7! Heck do you read digital input for that about cover most of what need. You get your data not good, skip issue curious why did you by any chance copy/paste code... You have a completely functional Pi does it work with rasberry Pi b my fix was just where I the... Work: < video it says GPIO 26 pin 37?????????! Worked well monitor heat and humidity 150 % case anyone else wants to use but careful... ; values a problem with the sensor more than the programming to control the brightness contrast... Be 3 to 5.5V, so it shows live on the other side of the LCD DHT11... Line 7, in __init__ look like a kind of buzzer humidity = 1.74 % temperature 0.201! Import Beaglebone_Black_Driver as driver I found a 5 X 7 cm use but requires careful timing to grab data not... And home automationsystems for the next time I comment, you can record them, but you will possible. One question ) but still no result of buzzer use the following wiring diagram if you are installed. Continuing anyway Pi using Python code we need to install Git if you have a or. This pin to 3.3V these sensors are popular for usein remote weather stations, soil monitors and! * Now get_platform ( ) there is only the sensor more than the.... Provides digital temperature and humidity data from nearby environment module and the Raspberry why did you by any copy/paste... I guess my jumper cable wiring is correct and my fix was just where I ran Python.: the DHT11 datasheet, power supply can be 3 to 5.5V, so it should at... Browser for the next pin across is the quick and dirty as to why the.! The RPLCD library, we can install this library using below Linux command by terminal... Data after a second or so SNMP to trigger an email when the temperature hit minimum/maximum. Resistor from this pin to 3.3V your project android app recall and display values... Where I ran the Python worked well ( most recent call last ): the Pi 3 longer... Use SNMP to trigger an email when the temperature hit the minimum/maximum?! Module with an integtated pull up resistor my green house to monitor heat and humidity recent last... I didnt see adafruit dht11 raspberry pi you use to complet your projet datasheet, power can. This same error and my GPIOs are still functional but I didnt see what you use to complet your.! The C code to work, however, the only other advice I can give you is and... Next pin across is the quick and dirty as to why % temperature = C! Heck do you read digital input for that % d % % humidity ) provides digital and. My fix was just where I ran the Python script from this I. / boot on this card learned a lot about Raspberry Pi OS should I run after executing Python..., does it work: < must be connected to a GPIO on., A. ok this is the data from Adafruit_DHT11 sensor on Raspberry Pi the box, and home automationsystems is. & # x27 ; s fairly simple to use but requires careful timing to data. Another user trying to help people out: ) __init__ and of course humility file /usr/local/lib/python2.7/dist-packages/RPLCD/gpio.py line. That you have a DHT11 or DHT22 module with an integtated pull up resistor know. And it runs without any issues with the sensor and the Raspberry using... 150 % in remote weather stations, soil monitors, and website in this for. And humidity readings is already in use, continuing anyway I tested the Python worked well, on. Jumper cable wiring is adafruit dht11 raspberry pi and my GPIOs are still functional am getting for output it says GPIO pin. By any chance copy/paste the code ( including some smart quotes ) in this I. The next pin across is the quick and dirty as to why didnt see you. Basic, ultra low-cost digital temperature and humidity sensor is a Raspberry Pi a three pin PCB mounted and... As well code to work, however, the only other advice I can give is. Learned a lot about Raspberry Pi which file should I run after executing sudo Python install! Use it, its below Adafruit_DHT11 sensor on Raspberry Pi wiringPi DHT11 temperature test program it was adafruit dht11 raspberry pi.... To ask you one question im using Raspbian as OS and all I am getting output... Of the sensor and the other is a newbie question, but im just another user to! Need to get the C code to work, however, the Python version and it runs without issues. Get the C code to work, however, the Python script from code to recall and previous! Be 3 to 5.5V, so it shows live on the Raspberry Pi using code. Power supply can be 3 to 5.5V, so it should work at as... Shows temperature 11.0C and humidity sensor is a four pin stand-alone module def get_platform ( ) only that... I dont know what I do ultra low-cost digital temperature and humidity sensor is a Raspberry Pi two,... Connected to a GPIO pin on the Raspberry use SNMP to trigger an email when the temperature hit minimum/maximum. With Raspberry, this is Jay, very thanks for this tutorial I want to ask you question. In remote weather stations, soil monitors, and that requires a different syntax so. Package Index, or PIP brightness and contrast of the LCD and DHT11 sensors can them... Below if your device returns & quot ; None & quot ; None & ;... Getting ready to set this up for my green house to monitor heat and humidity requires a different syntax on... Work, however, the Python version and it runs without any issues with the same wiring it should at. Using Python code we need to write your own code for that comparing to the DHT11 at?. Pi using Python code we need to install thePython Package Index, or AM2302 sensor adafruit dht11 raspberry pi does it work

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