arduino dht11 lcd display price

Today in this session we will learn to interface DHT11 Temperature and Humidity sensor with Arduino in a step-by-step manner. This simple project provides the ability tosense the environment around it with a cheap DHT11 sensor.

This sensor is pre-calibrated and no additional components are required so you can immediately start measuring relative humidity and temperature. Actually, the DHT11 sensor includes a resistive element like NTC. NTC is a temperature measuring sensor. Besides, DHT11 has good quality and durability. The best thing that we love about this sensor is, it is very cheap.

DHT11 also includes an NTC / Thermistor to measure temperature. A thermistor is a thermal resistor whose resistance changes rapidly with temperature. The word “NTC” means “negative temperature coefficient“, which means that the resistance decreases with increasing temperature.

The DHT11 is a digital humidity and temperature sensor. It measures humidity from 20% to 80% with an accuracy of 5%. Similarly, temperatures range from0°C to 50°C with ±2.0°C accuracy. Generally, DHT11 requires a 10k-ohm external pull-up resistor between the VCC and the digital pin for a suitable interface. Anyway, the DHT11 module has built-in resistors. Therefore, an additional resistor is not required. It also has a decoupling capacitor to filter the noise in the power supply.

Now, it’s time to interface DHT11 Temperature and Humidity sensor with Arduino UNO and 16×2 LCD Display. without doing delay let’s assemble the components with the help of following circuit diagram and tables.

Now, let’s program the Arduino UNO using this sketch. But, before uploading code to the Arduino. Download DHT Library file from below and copy it on Arduino Library Folder.

Copythe above code in your Arduino IDE and then go to the toolsmenu, select your correct board, and COM Port. Now, compilethe program and uploadit to your board.

This is a complete video tutorial on Interfacing DHT11 Temperature and Humidity Sensor with Arduino and 16×2 LCD Display. If this video tutorial is helpful for you then please, don’t forget to subscribe.

Finally, we have learned to Interface DHT11 with Arduino & LCD. Now, you can see the Humidity and Temperature from the LCD Screen. I hope you found this project useful! Drop a comment below if you have any doubts or queries. I’ll do my best to answer your questions.

It’s a low cost digital temperature and humidity sensor module which based on the new DHT11 sensor. The Grove DHT11 sensor requires only one I/O pin for the communication with the master device.

The Grove DHT11 temperature & humidity sensor uses the upgraded version of DHT11. In this version, resistive humidity components is replaced by capacitive humidity components, temperature and humidity measurement ranges are wider and temperature resolution is higher.

Seeed Studio provides a nice open source library for their LCD module which can be installed from Arduino IDE library manager (Sketch —> Include Library —> Manage Libraries …, in the search box write “grove lcd” and install the one from Seeed Studio).

They (Seeed Studio) also provide a library for their Grove DHT11 sensor but I recommend to use the one given by Adafruit Industries which can be installed also through library manager (in the search box write “dht sensor” and choose the one written by Adafruit) or manually, download links are below:

In this project we will be Interfacing DHT11 Humidity & Temperature Sensor with Arduino & LCD. We will design a device that will be capable of measuring room temperature and environmental humidity. Simply we will design a digital humidity and temperature meter using Arduino and a DHT11 sensor with the value displayed on LCD.

This DHT11 Temperature and Humidity Sensor features a calibrated digital signal output with the temperature and humidity sensor complex. Its technology ensures high reliability and excellent long-term stability. A high-performance 8-bit microcontroller is connected. This sensor includes a resistive element and a sense of wet NTC temperature measuring devices. It has excellent quality, fast response, anti-interference ability and high-cost performance advantages.

This DHT11 Temperature and Humidity Sensor features a calibrated digital signal output with the temperature and humidity sensor complex. Its technology ensures high reliability and excellent long-term stability. A high-performance 8-bit microcontroller is connected. This sensor includes a resistive element and a sense of wet NTC temperature measuring devices. It has excellent quality, fast response, anti-interference ability, and high-cost performance advantages.

Each DHT11 sensor features an extremely accurate calibration of the humidity calibration chamber. The calibration coefficients are stored in the OTP program memory, and internal sensors detect signals in the process, we should call these calibration coefficients. The single-wire serial interface system is integrated to become quick and easy. Small size, low power, signal transmission distance up to 20 meters, making it a variety of applications and even the most demanding applications. The product is a 4-pin single-row pin package. Convenient connections and special packages can be provided according to users’ needs.

So here is a source code for Interfacing DHT11 Humidity & Temperature Sensor with Arduino. Simply you need to add the dht11 library. Download the dht11 Arduino library from here: Dht11 Library

Here is a video preview and full explanation for Interfacing DHT11 Humidity & Temperature Sensor with Arduino and LCD as well as details information about DHT11 Sensor and program.

The DHT11 temperature and humidity sensor calibrated the digital signal output. Using specialized digital-signal and temperature and humidity sensing technology, it ensures high reliability and long-term stability. This sensor includes relative-type component and humidity measurement of the NTC temperature measurement component, and connects with excellent quality, fast response, anti-interference speed, a high performance 8-bit microcontroller capacity and cost effectiveness.

LCD stands for liquid crystal display. 16×2 LCD is named because; It has 16 columns and 2 rows. A lot of combinations like 8×1, 8×2, 10×2, 16×1 etc. are available. But the most commonly used is 16×2 LCD. So, it will have a total of 16×2 = 32 characters and each character will be composed of 5×8 pixel dots. For more information on LCD, please go LCD (Liquid Crystal) Display With Arduino Board.

Light emitted diodes (LED) are a semiconductor light source that emits light when the current flows through it. Electrons in semiconductor re-assemble electron holes and release energy in the form of photons. The color of light (consistent with photon energy) is determined by the energy required for electrons to cross the band gap of the semiconductor. In my previous tutorial, I explained How to blink led with Arduino board.

Pins 7-14 (Data Pins/D0) D7): These pins are used to send data to the display. In 4-wire mode, only four pins are attached to a microcontroller unit, 0 to 3, while in 8-wire mode, 8 pins are connected to microcontroller units 0 to 7.

Connect to the LED 220ohm resistor with the breadboard and attach to PIN6 and PIN7 of Arduino (digital PIN). And connect the small legs of both LED to the ground.

After connection, you must install the the LiquidCrystal library which has a folder you will place into your Arduino/libraries folder.Then write a simple program using the Arduino board in Arduino IDE software:

As a result, dht11 sensor data automatically captures data and your LCD will show humidity and temperature reading, And both LED lights will show the humidity and temperature shown in the following diagram:

DHT11 is a Humidity and Temperature Sensor, which generates calibrated digital output. DHT11 can be interface with any microcontroller like Arduino, Raspberry Pi, etc. and get instantaneous results. DHT11 is a low cost humidity and temperature sensor which provides high reliability and long term stability.

In this project, we will build a small circuit to interface Arduino with DHT11 Temperature and Humidity Sensor. One of the main applications of connecting DTH11 sensor with Arduino is weather monitoring.

We will see the circuit design of DHT11 interfacing with Arduino. The DHT11 Humidity and Temperature sensor comes in two variants: just the sensor or a module.

Coming to the design, the data pin of the DHT11 Sensor is connected to the Pin 11 of Arduino. A 16 x 2 LCD display is used to display the results. The control pins of LCD i.e. RS and E (Pins 4 and 6 on LCD) are connected to pins 4 and 5 of Arduino. The data pins of LCD i.e. D4 to D7 (pins 11 to 14 on LCD) are connected to pins 0 to 3 on LCD.

NOTE: For ease of connection, we have connected the DHT11 Sensor Module at the ICSP pins of the Arduino as it provides adjacent VCC, DATA and GND pins. This type of connection is not necessary and you can connect the data pin of sensor to normal Digital I/O pins.

DHT11 is a part of DHTXX series of Humidity sensors. The other sensor in this series is DHT22. Both these sensors are Relative Humidity (RH) Sensor. As a result, they will measure both the humidity and temperature. Although DHT11 Humidity Sensors are cheap and slow, they are very popular among hobbyists and beginners.

The DHT11 Humidity and Temperature Sensor consists of 3 main components. A resistive type humidity sensor, an NTC (negative temperature coefficient) thermistor (to measure the temperature) and an 8-bit microcontroller, which converts the analog signals from both the sensors and sends out single digital signal.

DHT11 Humidity Sensor consists of 4 pins: VCC, Data Out, Not Connected (NC) and GND. The range of voltage for VCC pin is 3.5V to 5.5V. A 5V supply would do fine. The data from the Data Out pin is a serial digital data.

The following image shows a typical application circuit for DHT11 Humidity and Temperature Sensor. DHT11 Sensor can measure a humidity value in the range of 20 – 90% of Relative Humidity (RH) and a temperature in the range of 0 – 500C. The sampling period of the sensor is 1 second i.e.

A simple project is built using Arduino UNO and DHT11 Humidity and Temperature Sensor, where the Humidity and Temperature of the surroundings are displayed on an LCD display.

After making the connections, we need not do anything as the program will take care of everything. Although there is a special library for the DHT11 module called “DHT”, we didn’t use it. If you want to use this library, you need to download this library separately and add it to the existing libraries of Arduino.

The program written is based on the data timing diagrams provided in the datasheet. The program will make the Arduino to automatically read the data from the sensor and display it as Humidity and Temperature on the LCD Display.