{"id":29308,"date":"2020-01-20T15:41:33","date_gmt":"2020-01-20T07:41:33","guid":{"rendered":"\/blog\/?p=29308"},"modified":"2020-06-29T13:59:11","modified_gmt":"2020-06-29T05:59:11","slug":"how-to-use-16x2-lcd-with-arduino-grove-lcd-rgb-backlight","status":"publish","type":"post","link":"https:\/\/www.seeedstudio.com\/blog\/2020\/01\/20\/how-to-use-16x2-lcd-with-arduino-grove-lcd-rgb-backlight\/","title":{"rendered":"How to use the 16×2 LCD with Arduino?"},"content":{"rendered":"\n

What is a 16\u00d72 LCD?<\/h2>\n\n\n\n

The 16×2 LCD screen has 2 lines and it can display up to 16 characters per line. 16×2 means two lines and each line has 16 columns, 32 characters in total. The 16×2 LCD screen can be programmed using an Arduino microcontroller board with the liquid crystal library to display custom text, numbers, and special characters.<\/p>\n\n\n\n

Traditionally, 16×2 LCD requires up to 10 I\/O pins to display which comes with monocolor backlight, but with RGB backlight requires an extra 3 pins to control the color which will take up a lot of I\/O pins on the main control board. Done with tedious monocolor backlight? With the help of Grove I2C connector, only 2 signal pins and 2 power pins are needed. You don’t even need to care about how to connect these pins. Just plug it into the I2C interface on the Arduino board such as Seeeduino V4.2<\/a>.<\/p>\n\n\n\n

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Grove – 16×2 LCD RGB Backlight<\/a><\/figcaption><\/figure><\/div>\n\n\n\n

This Grove 16×2 LCD comes with a full-color backlight. High contrast and ease of use makes it a perfect I2C 16×2 LCD with Arduino and Raspberry Pi. This enables you to set to any color via the simple and concise Grove interface.<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Grove \u2013 16×2 LCD RGB Backlight supports user-defined characters as well! Want to get a love heart or some other foreign characters? Just take advantage of this feature and design it!<\/p>\n\n\n\n

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Play 16×2 LCD with Arduino<\/strong><\/h2>\n\n\n\n
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Things\nyou need:<\/p>\n\n\n\n

  1. Grove \u2013 16×2 LCD RGB Backlight<\/a><\/li>
  2. Seeeduino V4.2<\/a> \/ Arduino UNO Rev3<\/a><\/li>
  3. Base Shield V2<\/a><\/li>
  4. Grove Cable<\/a><\/li><\/ol>\n<\/div><\/div>\n\n\n\n
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    Step by Step tutorial I2C display with Arduino:<\/p>\n\n\n\n

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    Step 1 \u2013 Connect 16×2 LCD display to I2C port of the base shield.<\/p>\n\n\n\n

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    Step 2 \u2013 Connect base shield onto Seeeduino.<\/p>\n\n\n\n

    \"\"<\/figure><\/div>\n\n\n\n
    Note:<\/strong> If we don't have Base Shield, we also can directly connect Grove - LCD RGB Backlight to Seeeduino as below.<\/pre>\n\n\n\n
    Seeeduino<\/td>Grove – LCD RGB Backlight   <\/td><\/tr>
    5V<\/td>Red<\/td><\/tr>
    GND<\/td>Black<\/td><\/tr>
    SDA<\/td>White<\/td><\/tr>
    SCL<\/td>Yellow<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>\n\n\n\n
    Step 3 \u2013 Connect Seeeduino to PC via a USB cable.<\/p>\n\n\n\n
    Step 4 \u2013 Download the Grove-LCD RGB Backlight Library<\/a> from Github.<\/p>\n\n\n\n
    Step 5 \u2013 Refer to How to install Arduino library<\/a>.<\/p>\n\n\n\n
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    Step 6 \u2013 Here are 12 examples in the library as below. <\/p>\n\n\n\n