{"id":121473,"date":"2025-12-19T08:39:42","date_gmt":"2025-12-19T08:39:42","guid":{"rendered":"https:\/\/www.seeedstudio.com\/blog\/?p=121473"},"modified":"2026-01-05T03:05:01","modified_gmt":"2026-01-05T03:05:01","slug":"add-an-oled-display-to-arduino","status":"publish","type":"post","link":"https:\/\/www.seeedstudio.com\/blog\/2025\/12\/19\/add-an-oled-display-to-arduino\/","title":{"rendered":"7 Steps to Add an I2C OLED Display to Arduino"},"content":{"rendered":"\n

Adding an OLED display is one of the easiest ways to improve an Arduino project<\/a>. You can show sensor values, system status, menus, or simple graphics in real time.<\/p>\n\n\n\n

An OLED display works especially well as an Arduino display. It has high contrast, low power consumption, and simple wiring<\/strong>. Most OLED modules use I2C, so only a few pins are needed.<\/p>\n\n\n\n

In this tutorial, you’ll learn how to add an OLED display to Arduino step by step<\/strong>. We’ll cover hardware connections, library installation, and example code. No complex setup. No unnecessary theory.<\/p>\n\n\n\n

Once the display is working, you can reuse it in many projects\u2014dashboards<\/a>, IoT devices, clocks, or control panels.<\/p>\n\n\n\n

Let’s start with the hardware setup.<\/p>\n\n\n\n

<\/div>\n\n\n\n

Hardware Preparation<\/mark><\/h2>\n\n\n\n

For this tutorial, we use a little 1.12-inch Grove-OLED display and a Grove extension board. The Grove series<\/a> has a standardised 4-pin connector<\/strong>, a foolproof design, and quick assembly. <\/p>\n\n\n\n

So what you need to do is connect the module to the I2C port on the extension board. The 4 pins are defined as below. <\/p>\n\n\n\n

pin<\/th>Function<\/th>Note<\/th>Cable color<\/th><\/tr><\/thead>
pin1<\/td>SCL<\/td>I2C Clock<\/td>YELLOW<\/td><\/tr>
pin2<\/td>SDA<\/td>I2C Data<\/td>WHITE<\/td><\/tr>
pin3<\/td>VCC<\/td>Power, 5V\/3.3V<\/td>RED<\/td><\/tr>
pin4<\/td>GND<\/td>Ground<\/td>BLACK<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Hardware that you need:<\/p>\n\n\n\n