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Lcd.write_string('Humidity: %d %%' % humidity)ДЄlso, check out Raspberry Pi LCD Set Up and Programming in Python to see how to do things like scrolling and positioning text. Lcd.write_string('Temp: %d C' % temperature)

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Once the library is installed, you can use the following code to output the DHT11В readings to an LCD: #!/usr/bin/python

#Stranger things season 2 episode 1 minutes install#

PIP might already be installed on your Pi, but if not, enter this at the command prompt to install it:ДЄfter you get PIP installed, install the RPLCD library by entering: To install the RPLCD library, we first need to install theВ Python Package Index, or PIP. To output the DHT11 readings to an LCD, weвЂ™ll need to install another Python library called RPLCD to drive the LCD. Print 'Temp: %'.format(temperature, humidity) Output to an LCD Humidity, temperature = Adafruit_DHT.read_retry(11, 4) This Python program will output the temperature and humidity readings to an SSH terminal: #!/usr/bin/python Sudo python setup.py install Output to an SSH Terminal Sudo apt-get install build-essential python-dev

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Enter this at the command prompt to download the library:

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Note: If you get an error installing Git, run sudo apt-get update and try it again.ДЎ. You can download the libraryВ using Git, so if you donвЂ™t have Git installed on your Pi already, enter this at the command prompt: WeвЂ™ll be usingВ the Adafruit DHT11 Python library. To find out more about how to controlВ text on anВ LCD with C, check out How to Setup an LCD on the Raspberry Pi and Program it With C. Lcd = lcdInit (2, 16, 4, LCD_RS, LCD_E, LCD_D4, LCD_D5, LCD_D6, LCD_D7, 0, 0, 0, 0) ДЇor temperature in Celsius, un-comment line 72 where it says lcdPrintf(lcd, 'Temp: %d.0 C', dht11_dat), then comment out line 73. LcdPrintf(lcd, 'Temp: %.1f F', f) //Comment out for Celsius lcdPrintf(lcd, 'Temp: %d.0 C', dht11_dat) //Uncomment for Celsius This C program will output the DHT11 readings to an LCD display: #include Printf( 'Raspberry Pi wiringPi DHT11 Temperature test program ' ) The following C program will output the humidity and temperature (in вЊ and вЏ) readings to anВ SSH terminal: #include Дht11_dat = dht11_dat = dht11_dat = dht11_dat = dht11_dat = 0 Gcc -o example example.c -lwiringPi -lwiringPiDevД¬hange example and example.c to the file name you want to use. The examples below are stand-alone C programs, which will need to be saved to a file with a вЂњ.cвЂќ extension, then complied by entering this at the command prompt: If you donвЂ™t have WiringPi installed already, follow this link for instructions on how to install WiringPi. WeвЂ™ll be using WiringPi to program the DHT11 in C.

How to Write and Run a C Program on the Raspberry Pi.

How to Write and Run a Python Program on the Raspberry Pi.

If youвЂ™re not familiar with writing and running programs in Python or C on the Raspberry Pi, check out one of these tutorials: IвЂ™ll explain how to use both C and Python to get temperature and humidity from the DHT11, soВ youвЂ™ll be able to incorporate the DHT11 into pretty much any existing RPi project. The resistor is a 10K Ohm pull up resistor connected betweenВ the Vcc andВ signal lines. An IC on the back of the module converts the resistance measurements from the thermistor and humidity sensor into digitalВ temperature (in вЊ) and relative humidity measurements. So instead ofВ repeating all of that here, check out How to Set Up the DHT11 Humidity Sensor on an Arduino, then come back for the specificsВ on setting it upВ on the Raspberry Pi.Д«utВ just to quickly summarizeвЂ¦ The DHT11 hasВ a surface mountedВ NTC thermistorВ and a resistive humidity sensor.

We have another tutorialВ on the DHT11 for the Arduino that goes into detail on relative humidity and how the DHT11 measures it. Then IвЂ™ll give you some example programs forВ programming it with either C or Python.

In this tutorial, IвЂ™ll show you how to connect the DHT11 to the Raspberry PiВ and output theВ humidity and temperature readings to an SSH terminal or to an LCD. Programming the DHT11 and connecting it to a Raspberry Pi is pretty simple too.