1,704 results for wall adapter power supply positive

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Power Supplies
Wall Adapter Power Supply - 12VDC 600mA

$ 5.95
Wall Adapter Power Supply - 9VDC 650mA

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

$ 6.95
Wall Adapter Power Supply - 5V DC 2A (Barrel Jack)

$ 5.95
Wall Adapter Power Supply - 5.25V DC 2.4A (USB Micro-B)

$ 7.95
Wall Adapter Power Supply - 5V DC 2A (USB Micro-B)

$ 5.95
LilyPad Power Supply

$ 14.95
ATX Power Supply Connector - Straight

$ 1.5
Power Supply - 12V/5V (2A)

$ 9.95
ATX Power Supply Connector - Right Angle

$ 1.95
Power Supply - 80W DC Switching Mode

$ 259.95
SparkFun Breadboard Power Supply 5V/3.3V

$ 9.95
Beginning Embedded Electronics - Power Supply Kit

$ 30.3
SparkFun Breadboard Power Supply Stick - 5V/3.3V

$ 14.95
SparkFun Breadboard Power Supply Stick - 3.3V/1.8V

$ 14.95
SparkFun Breadboard Power Supply USB - 5V/3.3V

$ 9.95
DC Barrel Jack Adapter - Female

$ 2.95

Barrel Jack to 2-pin JST

$ 2.95
Barrel Jack Adapter - USB to 5.5mm

$ 2.95
Digilent Analog Discovery 2

$ 279.95
SparkFun Hydra Power Cable - 6ft

$ 4.95
DC Barrel Jack Adapter - Male

$ 2.95
pcDuino - AV Kit

$ 39.95
LCD Monitor - 7" HDMI

$ 139.95
Wall Charger - 5V USB (1A)

$ 3.95
Raspberry Pi 2 Starter Kit

$ 89.95
Web of Things Kit

$ 99.95
uArm - Desktop Robotic Arm

$ 339.95

Frequency Generator Kit - FG085

$ 49.95
Li-Ion/Polymer Battery Charger/Balancer - 50W, 5A

$ 32.95
WIZnet Serial-to-Ethernet Gateway - WIZ110SR

$ 29.95
DC Barrel Power Jack/Connector (SMD)

$ 1.5
SparkFun Current Sensor Breakout - INA169

$ 8.95
DC Barrel Power Jack/Connector

$ 1.25
Coin Cell Battery Holder - 2xCR2032 (Enclosed)

$ 1.95
Edimax WiFi Adapter (EW-7811UN)

$ 14.95
Teensy 3.1 XBee Adapter

$ 9.95
FreeM - Infrared Controller

21.9500 $ 12.95
SparkFun Stepoko Motion Control Add-On Kit

$ 299.95
EL Inverter - 12v

$ 14.95
Car Adapter Plug - Red LED

$ 1.5
DC Barrel Jack - Panel Mount

$ 3.95
WiiChuck Adapter

$ 1.95
FabFM Radio Kit

$ 69.95
DC Barrel Jack Adapter - Breadboard Compatible

$ 0.95
Voltage Regulator - 5V

$ 0.95

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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.

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.

Teensy Arduino Shield Adapter Hookup Guide

June 18, 2015

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

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.

RedBoard Hookup Guide

January 7, 2014

How to get your RedBoard up-and-blinking!


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.

Touch Potentiometer Hookup Guide

October 22, 2015

Learn how to use the SparkFun Touch Potentiometer to control lighting, volume or other inputs in your daily life.

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.

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.


June 14, 2013

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


May 9, 2013

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

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.

Heating Pad Hand Warmer Blanket

January 21, 2013

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

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.

SparkPunk Sequencer Theory and Applications Guide

August 14, 2014

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

Galileo Getting Started Guide

January 23, 2014

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

Proto Pedal Assembly and Theory Guide

September 22, 2016

Getting started with the SparkFun Proto Pedal. We'll assemble the board, then discuss some of the details of the circuit.

SAMD21 Mini/Dev Breakout Hookup Guide

November 12, 2015

An introduction to the Atmel ATSAMD21G18 microprocessor and our Mini and Pro R3 breakout boards. Level up your Arduino-skills with the powerful ARM Cortex M0+ processor.

Proto Pedal Example: Programmable Digital Pedal

September 22, 2016

Building a pedal around the Teensy 3.2 and Teensy Audio shield. Changing the effect in the pedal is as easy as uploading a new sketch!

Large Solderable Breadboard Hookup Guide

February 27, 2014

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

LDK Experiment 1: Lighting Up a Basic Circuit

February 7, 2013

The first experiment in the LilyPad Design Kit series. In this exercise, you will learn how a basic e-textiles circuit works, and light up a sewable LED using a coin cell battery holder and conductive thread.

Teensy XBee Adapter Hookup Guide

June 18, 2015

Getting started with the Teensy 3.1 and XBee. Establishing a serial link.

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.

EL Sequencer/Escudo Dos Hookup Guide

December 3, 2015

A basic guide to getting started with the SparkFun EL Sequencer.

Mini FET Shield Hookup Guide

May 1, 2014

Learn how to hookup and use the FET shield for Arduino Pro Mini 3.3V. With this shield, you can control much larger loads such as motors or large LED strips without straining your Arduino's power.

Dot/Bar Display Driver Hookup Guide

January 16, 2014

How to hook up the LM3914 or LM3916 to drive a 10-LED display with a lone analog signal.

Series and Parallel Circuits

August 20, 2013

An introduction into series and parallel circuits.

Spectrum Shield Hookup Guide

March 24, 2015

Want your project to react to music? Then the SparkFun Spectrum Shield is the product for you! Get going in no time with this Hookup Guide.

Hobby Servo Tutorial

May 26, 2016

Servos are motors that allow you to accurately control the rotation of the output shaft, opening up all kinds of possibilities for robotics and other projects.

Big Easy Driver Hookup Guide

February 13, 2015

How to get started with the SparkFun Big Easy Driver.

Easy Driver Hook-up Guide

May 5, 2015

Get started using the SparkFun Easy Driver for those project that need a little motion.

Large Digit Driver Hookup Guide

June 25, 2015

Getting started guide for the Large Digit display driver board. This tutorial explains how to solder the module (backpack) onto the back of the large 7-segment LED display and run example code from an Arduino.

INA169 Breakout Board Hookup Guide

November 20, 2013

How to interface with the INA169 Breakout Board to measure current.

MP3 Trigger Hookup Guide V24

January 21, 2016

Incorporate sound into your next project easily with the MP3 Trigger.

Photon Battery Shield Hookup Guide

July 2, 2015

The Photon Battery Shield has everything your Photon needs to run off, charge, and monitor a LiPo battery. Read through this hookup guide to get started using it.

Pi Wedge B+ Hookup Guide

December 18, 2014

How to assemble and start using the Pi Wedge to prototype with the Raspberry Pi B+.

IOIO-OTG Hookup Guide

May 18, 2016

Get started using the IOIO-OTG with your Android device or PC.

Ardumoto Shield Kit Hookup Guide

July 2, 2015

Learn how to assemble and drive DC motors using the Ardumoto Shield.

LDK Experiment 2: Multiple LED Circuits

October 2, 2013

Design both parallel and series e-textile circuits with multiple LEDs!

How to Use a Multimeter

January 9, 2015

Learn the basics of using a multimeter to measure continuity, voltage, resistance and current.

Using the Arduino Pro Mini 3.3V

September 5, 2013

This tutorial is your guide to all things Arduino Pro Mini. It explains what it is, what it's not, and how to get started using it.

Galileo Unread Email Counter

January 30, 2014

How to create a simple unread-email checker with the Intel/Arduino Galileo.

Sunny Buddy Solar Charger Hookup Guide

April 11, 2014

How to hookup the Sunny Buddy: a solar-powered, MPPT (peak-power tracking), LiPo battery charger.

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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!

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.

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.

More new!

March 21, 2008 0

Wow! We've had a lot of new gadgets posted this week! Don't forget to check the listing from yesterday as well.

Product Post Thursday!

November 11, 2010 7

Products, products, and even more new products!

Friday Product Post: Pumpkin Pi

October 30, 2015 4

3.14159265359! A new kit, accessories, and maybe a few new IoT devices!

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.

New Product Friday: Degrees of Freedooooooooooom!

August 14, 2015 3

Up this week, new sensors, a new version of the LIDAR and more!

SparkFun Eagle Library Update

February 20, 2008 1

We've updated our <a href="http://www.opencircuits.com/SFE_Footprint_Library_Eagle">Eagle Footprint Library</a> on the Open Circuits website (we love that place!)

The Holy Grail of New Product Posts!

August 19, 2009 18

I think this is the most we have posted, ever? 25 new products!

Really Neat Projects and New Products

May 7, 2009 5

A stackable robot and a high altitude balloon, along with some new products.

Face Tracking

October 6, 2011 10

Check out this project/tutorial about building your own face tracking camera!

Kill A Watt

November 9, 2008 34

We disclose the deep dark secret that is power waste.

The Flood of New

June 29, 2009 6

A new tutorial on SMA connectors (it's good) and new products: Arduino Kit, SMA adapters, SD Sniffer, OSD breakout, function generator, ADXL335, kits, power supplies, GE864 cellphone module, we now carry books!, resistor kit, and a handful of others.

Prologue to the Autonomous Competition: New UAVs!

January 8, 2009 3

New UAV development platforms, some useful cables, and a handful of other cool stuff!

Bildr in Private Beta

June 14, 2010 18

Bildr - a new site for collaborative technical information on parts, modules, and technology. A wiki of sorts. Created by geeks, for geeks, for building cool stuff.

Enginursday: Linear Regulator Thermal Tests

August 25, 2016 9

This Enginursday tests a 7805 regulator with various heat sinks.

Autonomous Vehicle Competition and A Bunch of New Products

December 23, 2008 3

SparkFun is putting on a contest to see who can drive around the building the fastest. We've also got a new low-cost gyro breakout and some ding/dent items for sale.

SparkFun Tours ThinkGeek

December 14, 2011 14

In early December Nate and Chris paid ThinkGeek a visit at their HQ in Fairfax, Virginia. Here's a rundown of what happened!

All Hail the DeployBot!

April 18, 2012 46

Customer Service builds a light and sound alarm for themselves.

DIY Wirelessly Controlled Lights

April 5, 2012 14

Check out this nice project from a SparkFun customer.

Advancer Technologies and the MyoWare

May 13, 2015 1

The producers of our muscle sensor are at it again!

Friday Product Post: New Year, New Products

January 8, 2016 8

New solar panels, Arduinos, and the official release of the Qduino Mini! Woo-Hoo!

Leftovers From A Very Fulfilling Feast

October 22, 2010 16

A recap of The Feast: an inspiring, collaborative weekend in NYC with over 400 creative and genuinely good people.

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November 4, 2015

The Stepoko runs Grbl software and is able to connect to your computer, accept G-code and translate that to stepper motor commands (complete with stepper motor drivers). The Shapeoko on the other …

Dog Policy

January 24, 2014

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…

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Parts list to make christmas lights flash to music. I have...

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In-Progress - A Silk globe lamp that acts as a barometer by...

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