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Raspberry Pi Cookbook, 2nd Edition
book

Raspberry Pi Cookbook, 2nd Edition

by Simon Monk
June 2016
Beginner to intermediate content levelBeginner to intermediate
508 pages
9h 40m
English
O'Reilly Media, Inc.
Content preview from Raspberry Pi Cookbook, 2nd Edition

Chapter 14. Displays

14.0 Introduction

Although the Raspberry Pi can use a monitor or TV as a display, it is often nice to use a smaller, more specialized display with it. In this chapter, you will explore a range of different displays that can be attached to a Raspberry Pi.

Some of the recipes require the use of a solderless breadboard and male-to-female jumper wires (see Recipe 9.8).

14.1 Using a Four-Digit LED Display

Note

Be sure to check out the accompanying video for this recipe at http://razzpisampler.oreilly.com.

Problem

You want to display a four-digit number in an old-fashioned, seven-segment LED display.

Solution

Use an I2C LED module, such as the model shown in Figure 14-1, to a Raspberry Pi using female-to-female jumper wires.

F1301A
Figure 14-1. Seven-segment LED display with Raspberry Pi

To make this recipe, you need:

The connections between the Raspberry Pi and the module are as follows:

  • VCC (+) on the display to 5V on the Raspberry Pi GPIO connector
  • GND (-) on the display to GND on the Raspberry Pi GPIO connector
  • SDA (D) on the display to GPIO 2 (SDA) on the Raspberry Pi GPIO connector
  • SCL (C) on the display to GPIO 3 (SCL) on the Raspberry Pi GPIO connector

Note that Adafruit also supplies a jumbo-sized LED display. This can be ...

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Publisher Resources

ISBN: 9781491939093Errata Page