Raspberry Pi 3 Starter Kit Hookup Guide a learn.sparkfun.com tutorial

Available online at: http://sfe.io/t496

Contents

Introduction

Now that the Raspberry Pi 3 Model B and the Pi 3 Model B+ are the latest and greatest in the line of Raspberry Pi Single Board Computers, what's new? This hookup guide goes through the same process of getting going that worked with the Pi 2, but from a Pi 3 point of view.

Raspberry Pi 3 B+ Starter Kit

KIT-15361
1

Covered in This Tutorial

Materials Required

You'll need a mouse, keyboard, and monitor to begin with. Once configured, the pi can be operated from its own peripherals or another computer connected over the internet.

Note: The serial port still has a few bugs, so it's not recommended to use for configuration. Raspbian can be hacked to get it to work but it's not covered by this guide. This Pi forum post talks about the serial port in more depth.

As a desktop, these materials are required:

After configuration, 'headless' operation over Telnet/SSH requires:

You'll also need an internet connection to get resources! This link can be wired or wifi and must be available for the Pi. For wireless connections, you can use the on board WiFi antenna.

Suggested Reading and Viewing

You may want to check out the following tutorials and videos before continuing.

Assembly

The Pi is straight-forward and easy to put together, but in the event that something doesn't seem right, this section will give you an idea of what it is supposed to look like.

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Unbox and gather these components before beginning the assembly

  1. Snap the Pi into the base of the 'tin', then snap the top into place.

    alt text

    Fit the Pi into the base of the tin. Make sure the Pi is fully seated. Check that the PCB is evenly recessed about the perimeter.

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    Click the two halves together

  2. Add the SD card

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    Installing an SD card -- make sure the microSD card is flush with the side of the case when inserted properly. The Pi 3 microSD slot doesn't have a spring as the previous pis did, so if it's flush with the label outward, it is seated correctly.

  3. Connect the ribbon cable to the Pi -- notice that the pin 1 marking is very subtle. Orient the red stripe on the cable towards the SD card. Alternately, pin 1 can be identified by finding the missing/beveled corner of the header's silkscreen on the pi.

    alt text

    The pin 1 location and silkscreen is the same between the Pi B+ and Pi B. This image shows a partially inserted ribbon cable without the case in the way. The ribbon cable is oriented with the red "pin 1" marking pointing towards the SD card slot.

  4. Attach the ribbon cable to the wedge. Pin 1 is pointing towards the FTDI adapter.

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    Socket the end of the ribbon cable into the Wedge. It is keyed, but each end of the cable is different. Make sure the ribbon extends away from the breadboard connection.

  5. Socket the Wedge into your breadboard

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    Wedge inserted in breadboard.

  6. Attach the FTDI connector matching "GRN" to "GRN" and "BLK" to "BLK" between the boards.

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    The FTDI serial adapter is connected matching GRN and BLK connections

  7. Attach desired consumer computer equipment.

    alt text

    The fully assembled kit. Additional to the kit, user supplied monitor, mouse, and keyboard are shown. This Pi is now a desktop computer.

Getting an OS

Note: At the time this was written, the kit comes with a 16GB card loaded with the Noobs OS installation image, version 1.9.0. This card should be ready to boot right out of the box.

Getting a New Image

If something didn't work, or the installation has been corrupted (messing around in the file system were you?), getting a new copy is easy.

That's it! You're ready to go. For other imaging, check out this tutorial on sd cards and writing images:

SD Cards and Writing Images

How to upload images to an SD card for Raspberry Pi, PCDuino, or your favorite SBC.

You can also check out this guide from the Raspberry Pi foundation.

The First Boot

Before you apply power for the first time, run through this pre-flight checklist.

Ok, you're ready to apply the power to the Pi.

Power Adapter Requirement! Make sure the power being supplied is from the included 5.24V, 2.4A power supply and not your USB connection. The USB most likely won't have enough current supplying capacity and will result in a brown-out of the Pi that can damage it, and it will likely mess up the files on your SD card.

First, you should see a color chart appear on your screen that indicates the Pi has power and is doing something but doesn't have software loaded yet.

Next, Noobs asks if the raspbian distro should be installed. Check the box to select it, and choose your language/keyboard layout here (can also be changed later).

Noobs will take a few minutes to manage the partitions and install the OS.

When it's done, it should report that the OS was installed successfully. Click OK, the Pi will reboot into a graphical interface.

The Noobs default configuration is to auto-log in as user pi, password raspberry.

Performing a Full System Upgrade

Once connected to the Internet (see the Configuring the Pi section), it can be a good idea update all the packages that are currently installed. Usually, new packages replace old ones that are faulty, but sometimes new packages have bugs of their own. If your current system is stable and all the functions are good, maybe don't upgrade. If you're starting a fresh project though, get everything up-to-date before you start putting in the work.

Enter the following commands in the shell (process takes about 10 minutes).

Methods of Working with the Pi

Once the Pi is configured, there are a few methods of using it depending on if you want to use it like a desktop or manage it remotely.

This section covers using the Pi in the following ways

Using HDMI-out

Noobs 1.8.0, with Raspbian, automatically logs in and starts a graphical user interface.

If configured to boot to shell, log in with pi as the user name and raspberry as the password. Then, enter startx in the command line to enter a graphical environment where you are presented with a desktop-type menu-driven operating system.

If you need to get back to text land, you can either

Remember, shutdown with the menu item or enter sudo shutdown -h now from a shell, and wait for the system to halt before removing power.

Using the Serial Terminal without a Monitor

Connect the FTDI (or any USB-to-serial converter) to the mini-usb cable and plug into a usb port on your computer.

Set the terminal settings to 72000 baud, 8 bit, no parity, 1 stop and no flow control. This is an odd rate that is 1.6 times slower than before. Also, CPU frequency effects the symbol rate so be careful if using this interface, and plan for administering by a different method.

Using SSH

A good way to operate a Pi is to attach it to the local network somewhere, then manage it from another computer connected to that same network.

Note: This method relies on a local Internet connection. Work through the configuration process with the monitor/mouse/keyboard or serial terminal (described below), then come back here.

To do this, download PuTTY or a similar SSH terminal for your system and connect to the Internet port used by the pi. The TTY interface gives you a serial-like interface but with colors that make it a little nicer to use.

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A PuTTY terminal looks nicer than serial and can be used over networks

To obtain your IP address, get to a terminal, and use the command ifconfig. Alternately, hover the mouse pointer over the network icon on the task bar.

With Ethernet and wireless attached, ifconfig returns something like the following:

language:bash
pi@raspberrypi:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr b8:a8:3b:56:1a:f7
        inet addr:14.7.3.188  Bcast:14.7.3.255  Mask:255.255.255.0
        UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
        RX packets:3026 errors:0 dropped:0 overruns:0 frame:0
        TX packets:462 errors:0 dropped:0 overruns:0 carrier:0
        collisions:0 txqueuelen:1000
        RX bytes:229516 (224.1 KiB)  TX bytes:60888 (59.4 KiB)

lo        Link encap:Local Loopback
        inet addr:127.0.0.1  Mask:255.0.0.0
        UP LOOPBACK RUNNING  MTU:65536  Metric:1
        RX packets:8 errors:0 dropped:0 overruns:0 frame:0
        TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
        collisions:0 txqueuelen:0
        RX bytes:1104 (1.0 KiB)  TX bytes:1104 (1.0 KiB)

wlan0     Link encap:Ethernet  HWaddr 74:df:21:5b:a3:9c
        inet addr:32.8.0.142  Bcast:32.8.0.255  Mask:255.255.255.0
        UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
        RX packets:120 errors:0 dropped:40 overruns:0 frame:0
        TX packets:12 errors:0 dropped:4 overruns:0 carrier:0
        collisions:0 txqueuelen:1000
        RX bytes:20955 (20.4 KiB)  TX bytes:9956 (9.7 KiB)

If it looks similar but the IP addresses aren't present, that network link hasn't been established.

In this example, we know our Ethernet is on IP 14.7.3.188 and our wireless on 32.8.0.142. These can be entered into the PuTTY configuration window to begin the session. From here, it just works like the serial link!

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Configuring PuTTY

Configuring the Pi

This section goes over configuring the keyboard, wired, and wireless internet.

Configuring the Keyboard Layout

The Raspbian distribution comes defaulted to European hardware. With US keyboards, the " (quotation mark) symbol is replaced by @ (commercial at) and our number sign # is replaced by the European pound sign £. This can make it aggravating when trying to #define things. Invoke the config tool with "sudo raspi-config," and take the following actions:

Configuring the Internet Interfaces

Automatic Configuration

Raspbian does a good job of configuring wireless networks automatically. By default, DHCP is configured so that the Pi will receive an IP address when a network cable is plugged it to the Ethernet port or when a wireless network is connected.

To use the graphical network tool, right click on the icon on the right side of the task bar, and click "WiFi Networks (dhcpcdui) Settings". Then, select the interface desired (wlan0 or eth0) to disable the DHCP and set your own IP, if necessary.

To connect to a wireless network, click on the icon, select the desired network, and enter the password.

Hovering over the icon will bring up a status of wlan0 and eth0 that also shows the IP address.

Manual (text-based) Configuration

At this time, the network configuration works out of the box so there's really nothing to configure, but in case something goes awry, here's the basics of what can be played with and a known-working configuration to compare with.

A configuration file, interfaces, configures both wired and wireless devices. Enter the following command into a terminal to edit the interfaces file.

language:bash
sudo nano /etc/network/interfaces

Replace "nano" with "leafpad" if you prefer graphics. Here's what our Pi 3 is using:

language:bash
# interfaces(5) file used by ifup(8) and ifdown(8)

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'

# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto lo
iface lo inet loopback

iface eth0 inet manual

allow-hotplug wlan0
iface wlan0 inet manual
    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

allow-hotplug wlan1
iface wlan1 inet manual
    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

By default, this file is set up to get its configuration from /etc/wpa_supplicant/wpa_supplicant.conf, which is really the proper place for wifi information. Here are the contents:

language:bash
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1

network={
        ssid="myNetworkSSID"
        psk="mySuperSecurePassword"
        key_mgmt=WPA-PSK
}
A note on network configuration: Try the gui tool first, and only modify the files as a last resort. If you find the tool doesn't work, save your configuration files as a backup, and don't be afraid to try your hand at a manual configuration.

Applying the Changes

Sometimes the link should be cycled for a new configuration to take. Rather than shutting down the pi and restarting, use 'ifdown' and 'ifup' to bring the link down and back up.

For wireless connections, use

sudo ifdown wlan0

and

sudo ifup wlan0

For wired connections, use

sudo ifdown eth0

and

sudo ifup eth0

Reading Inputs and Toggling the LEDs

This section contains instructions for getting the software necessary to compile programs that use the GPIO, then redirects to our Raspberry gPIo tutorial.

Getting WiringPi for Using C++

The WiringPi library is required to operate the GPIO with C++. There are two methods to get it, mentioned below. Either way, it will have to be built before use.

Get From the WiringPi

Note: Wiring Pi is now pre-installed with standard Raspbian systems. The instructions from the official WiringPi homepage are now depreciated. The original wiringPi source "git://git.drogon.net/wiringPi" is not available.

Wiring Pi is previously not included with early versions of Raspbian. This required users to download and install it. Luckily, Wiring Pi is included in standard Raspbian systems. If you are looking to update using a mirrored Wiring Pi with small updates to support newer hardware, we recommend checking out this GitHub repository.

You'll need git (may be installed by default). If git is not installed, enter the following into the command line.

language:bash
sudo apt-get install git-core

We highly recommend using Git to download the latest version. To check what version you have, enter the following command.

language:bash
gpio -v

If you receive an output similar to to the following with the Unknown17, you'll want to update WiringPi on a Raspberry Pi 4 or above.

language:bash
gpio version: 2.50
Copyright (c) 2012-2018 Gordon Henderson
This is free software with ABSOLUTELY NO WARRANTY.
For details type: gpio -warranty

Raspberry Pi Details:
  Type: Unknown17, Revision: 02, Memory: 0MB, Maker: Sony
    * Device tree is enabled.
    * --> Raspberry Pi 4 Model B Rev 1.2
    * This Raspberry Pi supports user-level GPIO access.

Enter the following to remove the wiringPi and configuration files.

language:bash
sudo apt-get purge wiringpi

Then type the following for the Pi to remove all locations that remember wiringPi.

language:bash
hash -r

As long as you have Git installed, these commands should be all you need to download and install Wiring Pi.

language:bash
git clone https://github.com/WiringPi/WiringPi.git

This will make a folder in your current directory called WiringPi. Head to the Wiring Pi directory.

language:bash
cd WiringPi

Then pull the latest changes from the origin.

language:bash
git pull origin

Then enter the following command. The ./build is a script to build Wiring Pi from the source files. This builds the helper files, modifies some paths in Linux and gets WiringPi ready to rock.

language:bash
./build

At this point, the library should work. Run the gpio command shown below to view some information about the wiringPi version and the Pi that it is running on.

language:bash
gpio -v

Entering the following command will draw a table illustrating the configuration for the pins in the 40-pin connector.

language:bash
gpio readall

Getting Python

Raspbian comes with Python pre-installed. Continue to the gPIo tutorial to find out how to use it.

Using the GPIO.

This excellent tutorial covers all the INs, OUTs, and PWMs of GPIO with the Pi platform.

Raspberry gPIo

October 29, 2015

How to use either Python or C++ to drive the I/O lines on a Raspberry Pi.

Resources and Going Further

Raspberry Pi Accessories

If you are looking to add additional features, check out the accessories to power your Raspberry Pi remotely, build a homemade motion-activated security system, or go retro by building your own arcade controller to emulate classic video games!

Raspberry Pi LCD - 7" Touchscreen

Raspberry Pi LCD - 7" Touchscreen

LCD-13733
$60.00
50
PiJuice HAT - Raspberry Pi Portable Power Platform

PiJuice HAT - Raspberry Pi Portable Power Platform

PRT-14803
$68.95
4

Raspberry Pi Camera Module V2

DEV-14028
14
SparkFun PiRetrocade

SparkFun PiRetrocade

KIT-14007
$41.95
7

Click to Browse More Raspberry Pi Accessories


With the Pi 3 reading buttons and toggling LEDs, you're sure to be the coolest kid on the block, but what else can it do? Let us know how you use your Pi 3 in the comments! Otherwise, here are some links to our other Pi resources.

Need some inspiration? Check out these tutorials and projects.

Setting up Raspbian (and DOOM!)

How to load a Raspberry Pi up with Raspbian -- the most popular Pi Linux distribution. Then download, compile, install and run the classic: Doom.

Bark Back Interactive Pet Monitor

Monitor and interact with pets through this dog bark detector project based on the Raspberry Pi!

Introduction to MQTT

An introduction to MQTT, one of the main communication protocols used with the Internet of Things (IoT).

RP2040 Thing Plus Hookup Guide

Want to take a stab at advancing your programming skills? Check out the Thing Plus - RP2040, with the first microcontroller from the Raspberry Pi Foundation. This guide will get you started working with the RP2040 and programming in MicroPython and C/C++.

Or check out some of these blog posts for ideas:

Enginursday: Time-lapse with the Raspberry Pi

November 21, 2013

Enginursday: Monitor Twitter With a Raspberry Pi

December 5, 2013

Enginursday: Time-lapse with the Raspberry Pi Pt. 2

February 13, 2014

Raspberry Pi 3

February 29, 2016

T³: Raspberry Pi and the Stereo Arcana

July 19, 2016

T³: IoT Smart Pantry (Part 1)

September 27, 2016

Friday Product Post: In Vivid 1080pi

October 7, 2016

Taking Your PiRetrocade to the Next Level

November 10, 2016

Enginursday: Fun with Sockets

December 22, 2016

Enginursday: Mort and Mary Present...Fun with Sockets, Part Deux - Old Products Never Die

December 29, 2016

Enginursday: Eniac, The Data-Logging Web Server

January 26, 2017

IoTuesday: New Year's Resolution #2 – Healthier Eating

January 31, 2017

IoTuesday: Web-Style GUIs for your Raspberry Pi Hardware Project

February 21, 2017

Hardware Hump Day: Cloning your Raspberry Pi

March 8, 2017

Hardware Hump Day: USB Device Rules on Raspberry Pi

March 15, 2017

Enginursday: Home-Brew Alexa Endpoint

March 30, 2017

Automated Conference Room Signage

November 8, 2017

Swarming to Space on the Wings of XBee, RPi

November 9, 2017

Mort and Mary Present: The Mind-Controlled Light Switch

January 25, 2018

Raspberry Pi Python IDE Comparison

June 12, 2018

Friday Product Post: Power up your Pi!

August 17, 2018

Hackbot in the Morning

November 13, 2018

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