Arduino Interfacing With LCD Without Potentiometer

Aim: To interface 16x2 LCD with arduino without use of any potentiometer, breadboard, resistors

Components required:

1. Arduino Uno: https://www.dnatechindia.com/arduino_uno_r3.html

2. 16x2 Alphanumeric LCD: https://www.dnatechindia.com/Alphanumeric-LCD-2x1...

3. Jumper cables: https://www.dnatechindia.com/jumper-wire-male-to-...

Softwares required:

1. Arduino IDE

About this project:

In this project we will only be using a LCD, Arduino uno, jumper wires to display text on the LCD. We will use the digital pin 6 to control the contrast value of the LCD. The function to display text on the lcd will be | lcd.print (“Your text here”) |

Supplies

Components required:

1. Arduino Uno: https://www.dnatechindia.com/arduino_uno_r3.html 2. 16x2 Alphanumeric LCD: https://www.dnatechindia.com/Alphanumeric-LCD-2x16.html 3. Jumper cables: https://www.dnatechindia.com/jumper-wire-male-to-female-pack-of-40.html Softwares required: 1. Arduino IDE

Step 1: Procedure:

Connect the pins from the LCD on the Arduino digital according to the pins indicated in the table and schematic

Step 2: Code

1) Download the following code.

2) Open the following in Arduino ide.

3) Connect the arduino with your PC.

4) From the tools menu select the port and board correctly.

5) Hit the upload button and the text shall be displayed on your LCD.

Comments

[ftlfrm]

Setting the Contrast to 0 as mentioned below made this work like a charm.

[je_1972]

Worked great, we tried two other methods and this was the 1st that worked for us! Thanks :)

[adyrocks31]

make the constract=0 in the code

[anoilhero27]

lcd not showing anything.

[Baguett]

Try changing the contrast to 0, worked for me.

[adyrocks31]

thnx bro it worked

[anoilhero27]

Ok I will try. Thank you

[Pranav_17]

works thankyou

[Stud82]

Add a resistor with 220ohm between lcd pin A and 5V.

[namespace_7]

cannot see the text on lcd ? did anyone faced the same problem?

[Cr3ck3r]

I have the same problem. while the startup it show the text for 0.5 seconds then disappear if i find any solution i will comment again.