1,953 results for wall adapter power supply positive

Products 674 found

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Wall Adapter Power Supply - 12VDC 600mA

$ 5.95
Wall Adapter Power Supply - 9VDC 650mA

$ 5.95
Wall Adapter Power Supply - 5V DC 2A (Barrel Jack)

$ 5.95
9V DC 650mA Wall Adapter Power Supply - Retail

$ 6.95
Wall Adapter Power Supply - 5V DC 2A (USB Micro-B)

$ 5.95
LilyPad Power Supply

$ 14.95

Beginning Embedded Electronics - Power Supply Kit

$ 30.3
Power Supply - 80W DC Switching Mode

$ 259.95
ATX Power Supply Connector - Right Angle

$ 1.95
Power Supply - 12V/5V (2A)

$ 9.95
SparkFun Breadboard Power Supply 5V/3.3V

$ 9.95

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Tutorials 217 found

Benchtop Power Board Kit Hookup Guide

November 3, 2014

Need more power? This Benchtop ATX Power Supply Kit should help give you the boost you need to power those energy hungry projects.

LiPo USB Charger Hookup Guide

May 1, 2014

How to charge your LiPo batteries with the USB LiPo charger. Plus how to modify your charger to set the charge current.

Getting Started with the BrickPi

February 20, 2014

How to connect Lego Mindstorms to the Raspberry Pi using the BrickPi.

Teensy Arduino Shield Adapter Hookup Guide

June 18, 2015

A basic introduction and assembly guide for the SparkFun Teensy Arduino Shield Adapter.


June 19, 2013

Learn about all things capacitors. How they're made. How they work. How they look. Types of capacitors. Series/parallel capacitors. Capacitor applications.

What is a Circuit?

February 6, 2013

Every electrical project starts with a circuit. Don't know what a circuit is? We're here to help.

LED Light Bar Hookup

September 24, 2013

A quick overview of SparkFun's LED light bars, and some examples to show how to hook them up.

Connector Basics

January 18, 2013

Connectors are a major source of confusion for people just beginning electronics. The number of different options, terms, and names of connectors can make selecting one, or finding the one you need, daunting. This article will help you get a jump on the world of connectors.

How to Power a Project

February 7, 2013

A tutorial to help figure out the power requirements of your project.

MG2639 Cellular Shield Hookup Guide

May 7, 2015

Learn how to equip your Arduino with an MG2639 Cell Shield and use it to send SMS or TCP via GPRS.

Adding a Timed Button to a Project

July 29, 2015

This tutorial will walk you through making a timed power controller for interactive projects. You will learn how to add an on button that will provide power to your project for an amount of time and then turn off again.

RedBoard Hookup Guide

January 7, 2014

How to get your RedBoard up-and-blinking!

RGB Panel Hookup Guide

December 12, 2013

Make bright, colorful displays using the 32x32 and 32x16 RGB LED panels. This hookup guide shows how to hook up these panels and control them with an Arduino.

SparkPunk Sequencer Theory and Applications Guide

August 14, 2014

Examine the inner workings of the SparkPunk Sequencer, then explore some modifications and alternate applications.


May 9, 2013

A diode primer! Diode properties, types of diodes, and diode applications.


June 14, 2013

An introduction to polarity in electronic components. Discover what polarity is, which parts have it, and how to identify it.

Galileo Getting Started Guide

January 23, 2014

An introduction to the Arduino/Intel Galileo, and how to begin using the nifty x86, 400MHz Arduino.

Heating Pad Hand Warmer Blanket

January 21, 2013

DIY Project Idea: Create a custom hand warmer blanket using heating pads

Large Solderable Breadboard Hookup Guide

February 27, 2014

This breadboard has a couple of tricks up it's sleeve!

How to Use a Breadboard

May 14, 2013

Welcome to the wonderful world of breadboards. Here we will learn what a breadboard is and how to use one to build your very first circuit.

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Archived Tutorials 2 found

Wall Adapter Power Supply 9V Quick Start Guide

This guide reveals the deep dark secrets about wall power supplies.

Unregulated Power Supply Tutorial

Investigates the nature of the output signal on an unregulated power supply.

Blog 87 found

Power Supply Protection

January 13, 2009 31

What is the best way to protect electronics against reverse polarization?

My Love/Hate Relationship with Conductive Paint

August 18, 2011 40

A look into what has gone well, and what has gone poorly, working on a conductive paint mural.

Retrosparktive Part I - A Look Back

August 4, 2014 19

With SparkFun moving forward, we take a glance at the past.

Acclerometer Etchasketch

April 22, 2008 1

It's probably been done a few times before, but it's really neat to be able to control an Etchasketch with a couple accelerometers.

Welcome to another year of new products!

January 6, 2011 19

It's 2011 and we expect this to be a big year for new products.

Influx of Tutorials

August 20, 2008 0

Three new tutorials and a handful of new items.

Retrosparktive Part II - Longbow Drive

August 11, 2014 2

SparkFun moves up to a "real building" - business ensues

All New Products

July 27, 2009 4

Like the title says: All New Products

'Tis the Season

December 17, 2009 10

A cool Christmas project, Adafruit gets a C&D, and products!


October 29, 2008 4

What do you do with this 'embedded electronics' thing? You scare cats. Fun random links and a few pictures of the SparkFun Pumpkin. Cause we're cool like that.

New Product Friday: Your Parts Connection

October 5, 2012 21

The shipments are coming in and we're starting to get a lot new products. Check out what we've got for this week!

SparkFun Sale!

June 17, 2010 35

It's time for a sale! Plus, we're announcing a new product section: the Sale Category.

To consume or not to consume...

August 25, 2014 0

How to get more out of the things in your classroom. Lower cost alternatives for your classroom Arduino projects.

A Gripping Friday New Product Post

August 5, 2011 31

We have some gripping products for you this week, so have a ball!

Neato Robotics XV-11 Tear-down

November 22, 2010 43

We tore apart a Neato Robotics XV-11 robotic vacuum cleaner and did a little reverse engineering.

Post Free-Day Saturday New Product Post

January 15, 2011 63

Now that Free-Day is over we have to get back to the normal grind. Here are the new products for this week.

Engineering Roundtable - Burning Man Edition

September 10, 2013 19

Engineer Chris went to Burning Man, and needed some solar power for his project. Thus, a Roundtable was born.

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Articles 2 found


In just a few weeks, SparkFun will be vacating its offices at 6175 Longbow and moving on up to Dry Creek Parkway. For those of you that have been with us since our humble beginnings, this is a pretty …

Dog Policy

Dog Policy Introduction This is the SparkFun Electronics Dog Policy. It is a living document used to govern the perk of bringing dogs to work as an employee of SparkFun. The canonical form of this d…

Wish Lists 970 found

Supporting Components for Raspberry Pi Wishlist

HelloTechie 495 items

The USB to TTL Serial Cable is can be used to connect to your Pi…

build your own arduino

Member #461205 56 items

To make an arduino on a breadboard. power supply and all. even g…

Beginning Parts Order

frabjousday 12 items

Stuff to get started - Power supply and parts for tutorials.

Light up origami flowers

Sarah Al-Mutlaq 5 items

All the electronic parts needed to get you started on making you…

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