{"id":1014,"date":"2018-07-28T13:00:23","date_gmt":"2018-07-28T12:00:23","guid":{"rendered":"http:\/\/chewett.co.uk\/blog\/?p=1014"},"modified":"2018-07-28T20:16:17","modified_gmt":"2018-07-28T19:16:17","slug":"setting-up-a-16x2-liquid-crystal-display-to-show-hello-world","status":"publish","type":"post","link":"https:\/\/chewett.co.uk\/blog\/1014\/setting-up-a-16x2-liquid-crystal-display-to-show-hello-world\/","title":{"rendered":"Setting up a 16×2 Liquid Crystal Display to show Hello World"},"content":{"rendered":"

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This post describes how to use a 16×2 Liquid Crystal Display unit as included in the Arduino Starter Kit<\/a>\u00a0to display the text “Hello World”.<\/p>\n

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Overview of the 16×2 Liquid Crystal Display Module<\/h2>\n

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In this review I am using the 16×2 Liquid Crystal Display module from the Arduino Starter Kit<\/a>. This LCD has 16 character\u00a0panels per row, and two rows.<\/p>\n

Using the Arduino we can control this and write any supported letters to the display. This is one of the simplest ways of displaying information from an Arduino.<\/p>\n

This is the most common type of LCD display, with a standard protocol and 16 pin output. Likely whatever brand LCD display you have, if it has 16 pins and a similar pin output it will be supported by the Arduino.<\/p>\n

A nice feature of this LCD module is that you can easily configure the contrast. I am going to add a potentiometer to manually tweak the contrast levels. However you can use a standard resistor instead of using a potentiometer. This may involve some trial and improvement to find the value which gives you the desired contrast.<\/p>\n

Wiring it up to the Arduino<\/h2>\n

To wire the LCD module up to the Arduino we need to use 6 digital pins. The below diagram shows the full wiring for the LCD module.<\/p>\n

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The following pins of the module need to be connected as below, these are listed from left to right:<\/p>\n