Interfacing LCD to Arduino. JHD162A

Interfacing LCD to arduino. JHD162A is the 16x2 LCD module used here...1 de 10 http://www.circuitstoday.com/interfacing-lcd-to-arduino Home Forums Datasheets Lab Manual Testing Components Buy Project Kits Electronic Circuits and Diagram-Electronics Projects and Design Custom Search Interfacing LCD to arduino praveen June - 19 - 2014 3 Comments Interfacing LCD to Arduino uno. LCD modules form a very important part in many arduino based embedded system designs. So the knowledge on interfacing LCD to arduino is very essential in designing embedded systems. This article is about interfacing a 16×2 LCD to Arduino. JHD162A is the LCD module used here. JHD162A is a 16×2 LCD module based on the HD44780 driver from Hitachi. The JHD162A has 16 pins and can be operated in 4-bit mode or 8-bit mode. Here we are using the LCD module in 4-bit mode. First, I will show you how to display plain text messages on the LCD module using arduino and then few useful projects using LCD and arduino. Before going in to the details of the project, let’s have a look at the JHD162A LCD module. JHD162A LCD module 16×2. The JHD162A has 16 pins and can be operated in 4-bit mode or 8-bit mode. Here we are using the LCD module in 4-bit mode. Before going in to the details of the project, let’s have a look at the JHD162A LCD module.The schematic of a JHD162A LCD module is given below. The name and functions of each pin of the JHD162A LCD module is given below. Pin1(Vss):Ground pin of the LCD module. Pin2(Vcc):+5V supply is given to this pin Pin3(VEE):Contrast adjustment pin. This is done by connecting the ends of a 10K potentimeter to +5V and ground and then connecting the slider pin to the VEE pin. The voltage at the VEE pin defines the contrast. The normal setting is between 0.4 and 0.9V. Pin4(RS):Register select pin.The JHD162A has two registers namely command register and data register. Logic HIGH at RS pin selects data register and logic LOW at RS pin will select command register. If we make the RS pin HIGH and put a data on the data lines (DB0 to 18/11/2014 11:59 p. m. For knowing more about LCD module JHD162A and it interfacing.0). DB5. 3. a 560 ohm resistor should be connected in series to this pin. Pin16(LED-): Cathode of the back light LED. 4. then it will be taken as a command. This method is very simple. In this project.com/interfacing-lcd-to-arduino DB7) it will be recognized as a data. // prints 16x2 LCD MODULE 2 de 10 18/11/2014 11:59 p. The arduino can be also powered from the PC through the USB port. Pin15(LED+): Anode of the back light LED. http://www. 3 and 2 of the Arduino. +5V required in some other parts of the circuit can be tapped from the 5V source on the arduino board. DB6 and DB7 are interfaced to digital pins 5. the LCD module and arduino are interfaced in the 4-bit mode. m. The commands and data are put on these pins. 2). } // sets the interfacing pins // initializes the 16x2 LCD void loop() { lcd. 11. The 10K potentiometer is used for adjusting the contrast of the display.. Pin5(R/W): Read/Write modes. When operated on 5V.setCursor(0. RS pin of the LCD module is connected to digital pin 12 of the arduino.3V source on the arduino board. The full program for interfacing LCD to arduino is shown below. requires less connections and you can almost utilize the full potential of the LCD module.begin(16. The circuit diagram of interfacing LCD to arduino for displaying a text message is shown below. The arduino can be powered through the external power jack provided on the board. Digital lines DB4.print("16x2 LCD MODULE"). 4. If we make the RS pin LOW and put a data on the data lines. Pin6(E): This pin is meant for enabling the LCD module.h> LiquidCrystal lcd(12. Logic HIGH at this pin activates read mode and logic LOW at this pin activates write mode. Program. Circuit diagram.. JHD162A is the 16x2 LCD module used here. 2). 5. R/W pin of the LCD is grounded. void setup() { lcd. This pin is used for selecting between read and write modes. In arduino based projects the back light LED can be powered from the 3. //sets the cursor at row 0 column 0 lcd. Enable pin of the LCD module is connected to digital pin 11 of the arduino. #include<LiquidCrystal. 560 ohm resistor R1 limits the current through the back light LED. A HIGH to LOW signal at this pin will enable the module.Interfacing LCD to arduino. . Pin7(DB0) to Pin14(DB7): These are data pins. That means only four of the digital input lines( DB4 to DB7 of the LCD are used).circuitstoday. read this article: Interfacing 16×2 LCD and 8051 microcontroller. You can find that article here: Digital thermometer using arduino. } //scrolls display left by two positions //sets the speed at which display moves Digital thermometer with LCD display using arduino. scrolling the display etc. void setup() { lcd.. Library function “LiquidCrystal.i++) {lcd. .scrollDisplayLeft()” will scroll the display to left. m. This is done using the “scroll()” function. 3 de 10 lcd. A “for” loop is used for selecting the number of positions to scroll at a time.scrollDisplayRight()” will scroll the display to right and the function”lcd. 2). JHD162A is the 16x2 LCD module used here. The output voltage of the LM35 increases 10mV per °C rise in temperature and the range is from -55°C to +155°C. initializing the LCD. //text to display } void loop() { for(i=0.h” is used for displaying the desired characters on the LCD module.. It is readily available with the Arduino user interface and it can be accessed through the “Import library” in the “sketch” tab in the main menu bar.com/interfacing-lcd-to-arduino //sets the cursor at row 1 column 2 // prints HELLO WORLD } About the program. This is just a practical implementation of the interfacing of LCD and Arduino. 18/11/2014 11:59 p. The circuit diagram of the LCD thermometer using arduino is shown in the figure below. Read this article before attempting the LCD version. In the program shown below.} delay(800). #include <LiquidCrystal. The LiquidCrystal.h> int i=0. A simple digital thermometer using arduino and 3 digit seven segment display had been already published here. //initializes 16x2 LCD lcd.1).circuitstoday. setting the cursor. 3. Circuit diagram: LCD thermometer. For shorter texts more number of positions must be scrolled at a time to get a smooth display. 2). For example the function “lcd. 11. 4.print("HELLO WORLD").i<2. lcd.setCursor(2. A simple program for scrolling a text on the LCD using arduino is shown here. http://www. 5.print("16x2 LCD MODULE JHD162A & ARDUINO-UNO"). It is a three terminal linear analog temperature sensor. LiquidCrystal lcd(12. LM35 is the temperature sensor used in this project. it is chosen to be 2 because the text to be displayed is comparatively long.scrollDisplayLeft().h provides functions for almost all applications like printing a string.Interfacing LCD to arduino. Program for scrolling the display.begin(16. m.print(tempf). 2).print(temp). lcd. digitalWrite(vcc. Vcc pin (pin 1) of the LM35 is connected to A0 pin of the arduino.print("C").setCursor(2.1). pinMode(sensor.setCursor(0.1). lcd. // // // // lcd. } // // // // // Vcc for LM35 Ground for LM35 initializes the 16x2 LCD sets the cursor at column 2 row 0 prints temperature void loop() { temp=analogRead(sensor).. lcd. JHD162A is the 16x2 LCD module used here. 11. lcd.8)+32. int gnd=A2. pinMode(gnd. float temp.print("F"). lcd. sets cursor at column prints temperature in prints degree sign prints letter c sets cursor at column prints temperature in prints degree sign prints letter F 1 second delay // // // // // // // // // reads the sensor output converts the sensor reading to temperature adds the decimal point converts to Fahrenheit 0 row 1 degree Celsius 8 row 1 degree Fahrenheit } 4 de 10 18/11/2014 11:59 p.LOW). lcd. int sensor=A1. delay(1000). void setup() { pinMode(vcc. temp=temp/10.print((char)223). lcd.0). 2).OUTPUT). tempf=(temp*1.begin(16. Program: LCD thermometer.com/interfacing-lcd-to-arduino The LM35 temperature sensor is interfaced to the analog input pins of the arduino.INPUT). Output pin (pin 2) of the LM35 is connected to A1 pin of the arduino. #include <LiquidCrystal.Interfacing LCD to arduino. LiquidCrystal lcd(12. digitalWrite(gnd. lcd. lcd.h> int vcc=A0. . lcd. GND pin (pin 3) of the LM35 is connected to A2 pin of the arduino. The complete program of the LCD thermometer using arduino is given below..HIGH). float tempf. temp=temp*5.OUTPUT). 4. http://www. 5.circuitstoday.setCursor(8.print((char)223). 3.print("TEMPERATURE"). 5 de 10 http://www.. JHD162A is the 16x2 LCD module used here.Interfacing LCD to arduino. JHD162A LCD module Leave a Reply Name (required) Mail (will not be published) (required) Website 3 Responses to “Interfacing LCD to arduino” chirag surti says: August 5. 2014 at 10:24 pm 18/11/2014 11:59 p.. .circuitstoday. m.com/interfacing-lcd-to-arduino You may also like: LPG sensor using arduino OhmMeter using Arduino – with Auto Ranging Feature Water level controller using arduino Tachometer using arduino Motor speed control using arduino We recommend: Class B power amplifier Dual Adjustable Power Supply Using LM 317 & LM337 12V to 24V DC DC converter LA3161 Stereo Preamplifier Remote control tester circuit Custom Search Posted in Arduino Tags: interfacing LCD to arduino. com/interfacing-lcd-to-arduino thanks u for the these great circuits & v r impress on ur circuits… Reply balwinder says: July 23. . 6 de 10 http://www.circuitstoday. Reply ElektrikBilim says: July 4...love u all team. 2014 at 12:15 am thanks you a lot for these electronics circuits.plz alao post information regarding Rasbery pi board with simple projects. JHD162A is the 16x2 LCD module used here. Reply Get Daily Updates via Email Latest Articles LPG sensor using arduino OhmMeter using Arduino – with Auto Ranging Feature 8051 Timers and Counters We are on all Social Media – Youtube Facebook Twitter Linkedin and Slideshare Water level controller using arduino Tachometer using arduino Interfacing LCD to arduino Motor speed control using arduino Digital code lock using arduino Interfacing hex keypad to arduino 18/11/2014 11:59 p. m.Interfacing LCD to arduino. 2014 at 3:19 am Thanks circuits today team to provide us better circuit guidence and project.tx again. 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