Arduino - Temp and Humidity DHT11 + LCD 1602A - KY-015 Sensor

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Introduction: Arduino - Temp and Humidity DHT11 + LCD 1602A - KY-015 Sensor

About: Hello world! I make simple & Advanced projects for people who want to learn programming and electronics. Most of my Instructables are about arduino and the wide range of sensors you can use with it. I ma...

Hello world! Today i made another example for one of the bunch of sensor that i have.

This time i made a simple weather station with the DHT11 (ky-015) and the LCD 1602A.

Note!

If you are using a I2C on the LCD screen i already set the lines in the CODE for you.

Just follow the steps in the Code to make it work with a I2C, make sure you set the Right I2C address in the code.

Here are the most common I2C addresses.

i2C Addresses:

PCF8574 = 0x20,

PCF8574A = 0x38,

PCF8574AT = 0x3F

Check the following step for the Schematic Code and Parts list!

Step 1: Schematic Code & Parts List.

Parts List.

  1. Arduino Uno, I used a RobotDyn Uno which has 7 analog pins instead of 5.
  2. Potentiometer 10k
  3. KY-015 dht11
  4. LCD 1602A (You do not need a I2C on it, by default the code is without I2C)
  5. set of Jumper wires MM/FF/MF.

Good luck!

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    3 Comments

    Not sure if anyone still monitors this, but I keep getting errors....any idea how to fix it?

    Arduino: 1.8.2 (Windows 10), Board: "Arduino/Genuino Uno"

    C:\Users\trapt\Documents\Arduino\libraries\Adafruit_CircuitPlayground\utility\Adafruit_CPlay_Mic.cpp: In member function 'int Adafruit_CPlay_Mic::peak(uint16_t)':

    C:\Users\trapt\Documents\Arduino\libraries\Adafruit_CircuitPlayground\utility\Adafruit_CPlay_Mic.cpp:27:37: error: 'analogPinToChannel' was not declared in this scope

    channel = analogPinToChannel(4); // Pin A4 to ADC channel

    ^

    C:\Users\trapt\Documents\Arduino\libraries\Adafruit_CircuitPlayground\utility\Adafruit_CPlay_Mic.cpp: In member function 'void Adafruit_CPlay_Mic::capture(int16_t*, uint8_t)':

    C:\Users\trapt\Documents\Arduino\libraries\Adafruit_CircuitPlayground\utility\Adafruit_CPlay_Mic.cpp:84:37: error: 'analogPinToChannel' was not declared in this scope

    channel = analogPinToChannel(4); // Pin A4 to ADC channel

    ^

    Multiple libraries were found for "Adafruit_Sensor.h"

    Used: C:\Users\trapt\Documents\Arduino\libraries\Adafruit_CircuitPlayground

    Not used: C:\Program Files (x86)\Arduino\libraries\Adafruit_CircuitPlayground

    Not used: C:\Program Files (x86)\Arduino\libraries\Adafruit_CircuitPlayground

    Not used: C:\Program Files (x86)\Arduino\libraries\Adafruit_CircuitPlayground

    Not used: C:\Program Files (x86)\Arduino\libraries\Adafruit_CircuitPlayground

    exit status 1

    Error compiling for board Arduino/Genuino Uno.

    This report would have more information with

    "Show verbose output during compilation"

    option enabled in File -> Preferences.

    1 reply

    Did you figure it out?

    There was a little mistake in the Schematic. I fixed it.