3,615 results for 7.4V

Lithium Ion Battery - 1000mAh 7.4v

PRT-11855
9.95
2
Lithium Ion Battery - 2200mAh 7.4v

PRT-11856
15.95
Fio v3 - ATmega32U4

DEV-11520
34.95
7
Shaft - D-Shaft (Stainless; 1/4"D x 7.00"L)

ROB-12137
3.19
7-Segment Display - 4-Digit (Kelly Green)

COM-09482
1.95
7-Segment Display - 4-Digit (Red)

COM-09483
1.95
7-Segment Display - 4-Digit (White)

COM-10931
1.95
7-Segment Display - 4-Digit (Blue)

COM-09481
2.5
7-Segment Display - 4-Digit (Yellow)

COM-09480
1.95
Standard Gearmotor - 4 RPM (3-12V)

ROB-12162
24.95
1
Standoff - Aluminum Threaded (6-32; 7/8", 4 Pack)

ROB-13135
1.99
Shaft - Solid (Stainless; 1/4"D x 7"L)

ROB-12189
2.39
12V Solenoid Valve - 3/4"

ROB-10456
7.95
5
Servo - Hitec HS-646WP (Standard Size)

ROB-11886
42.95
Serial Enabled 20x4 LCD - Black on Green 5V

LCD-09568
29.95
14

SEN-13101
Wall Adapter Power Supply - 5.25V DC 2.4A (USB Micro-B)

TOL-13831
7.95
6
SparkFun Shift Register Breakout - 74HC595

BOB-10680
2.95
4
SparkFun Shift-In Breakout - SN74HC165

BOB-11733
3.95
2
Basic 20x4 Character LCD - Black on Green 5V

LCD-00256
17.95
SparkFun RFID Evaluation Shield - 13.56MHz

DEV-10406
19.95
SparkFun OpenSegment Serial Display - 20mm (Yellow)

COM-11645
16.95
750 mAh Alkaline Battery - AAA

PRT-09274
0.5
LCD Monitor - 7" HDMI

LCD-11612
139.95
2
Wild Thumper 6WD Chassis - Black (34:1 gear ratio)

ROB-11056
249.95
2
SparkFun BigTime Watch Kit

KIT-11734
29.95
4
EL Wire - Blue 3m (Chasing)

COM-12925
9.95

SPX-14160
Thermoelectric Cooler - 40x40mm

COM-10080
11.95
4
SparkFun USB UART Serial Breakout - CY7C65213

BOB-13830
12.95
Picaxe Robot - BOT120

DEV-10170
74.95
Header board for LPC2148

DEV-00676
40.9500 24.95
pcDuino Acadia - Dev Board

DEV-13610
119.95
Modular Plastic Storage Box - Medium (4 pack)

TOL-11528
3.95
1
Servo - Generic Metal Gear (Micro Size)

ROB-10333
10.95
6
SparkFun Picoboard Starter Kit

KIT-13863
64.95
1
LED - Super Bright White (100 pack)

COM-10035
29.95
2
SparkFun RJ45 Breakout

BOB-00716
0.95
18
SparkFun IoT Starter Kit with Blynk Board

KIT-13865
69.95
6
LED - Violet 5mm

COM-12704
0.5
1
SparkFun Altitude/Pressure Sensor Breakout - MPL3115A2

SEN-11084
14.95
12
Standard Gearmotor - 81 RPM (3-12V)

ROB-12310
24.95
Standard Gearmotor - 303 RPM (3-12V)

ROB-12147
24.95
1
Light to Frequency Converter - TSL235R

SEN-09768
2.95
SparkFun Serial Enabled 16x2 LCD - Black on Green 3.3V

LCD-09066
24.95
1
LED - SMD RGB

COM-10866
0.5
Servo - Generic Continuous Rotation (Micro Size)

ROB-10189
11.95
1

DEV-11469
1 Retired

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Hacking the MiP - Proto Back

December 4, 2014

How to attach the Proto Back and begin Hacking the MiP

Battery Technologies

February 6, 2013

The basics behind the batteries used in portable electronic devices: LiPo, NiMH, coin cells, and alkaline.

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.

Ardumoto Shield Hookup Guide

January 13, 2014

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

Ardumoto Shield Kit Hookup Guide

July 2, 2015

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

Multiplexer Breakout Hookup Guide

August 18, 2016

How to use the 74HC4051 multiplexer breakout to drive eight LEDs, read eight button inputs, or monitor eight potentiometers.

Shift Registers

August 23, 2013

An introduction to shift registers and potential uses.

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.

XBee WiFi Hookup Guide

November 21, 2013

An overview of Digi's WiFi XBees, and a quick how-to on getting them connected and interfacing with the cloud.

Designing PCBs: Advanced SMD

December 10, 2012

Advanced Eagle layout for PCBs with SMD devices.

MicroView Hookup Guide

December 15, 2016

A quick tutorial to get you up and running with your MicroView Development Board.

Assembly Guide for RedBot with Shadow Chassis

May 28, 2015

Assembly Guide for the RedBot Kit. This tutorial includes extra parts to follow to go along with the RedBot Inventor's Kit tutorial.

MicroSD Shield and SD Breakout Hookup Guide

March 25, 2015

Adding external storage in the form of an SD or microSD card can be a great addition to any project. Learn how in this hookup guide for the microSD shield and SD breakout boards.

Serial Terminal Basics

September 9, 2013

This tutorial will show you how to communicate with your serial devices using a variety of terminal emulator applications.

Shapeoko Coaster Project

November 20, 2015

A step-by-step guide to cutting and engraving a coaster with the Shapeoko.

Bubble Display Hookup Guide

March 7, 2014

Need a small, cheap, and easy display? These bubble displays are what you've been looking for. Learn how to use them in this hookup guide.

Resistors

April 1, 2013

A tutorial on all things resistors. What is a resistor, how do they behave in parallel/series, decoding the resistor color codes, and resistor applications.

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!

Logic Levels

June 3, 2013

Learn the difference between 3.3V and 5V devices and logic levels.

Constant Innovation in Quality Control

December 11, 2013

In this article, we share our recent advancements in quality control. Along with making our tests more thorough, we have also made them more efficient and robust.

Disabling Driver Signature on Windows 8

August 19, 2013

This is a tutorial on how to disable driver signature enforcement on Windows 8.

SparkFun USB to serial UART Boards Hookup Guide

February 18, 2016

How to use the SparkFun FTDI based boards to program an Arduino and access another serial device over the hardware serial port, without unplugging anything!

Getting Started with the SparkFun Inventor's Kit for Google's Science Journal App

May 24, 2016

This is a quick guide to using the Google Science Journal app with the Arduino 101 that's included and pre-programmed in the SIK for Google's Science Journal App.

Interactive Smart Mirror

February 8, 2016

Build a smart mirror that displays weather data using the Intel® Edison.

Simon Tilts Assembly Guide

December 3, 2013

This tutorial will guide you through assembling your Simon Tilts PTH Kit.

PCA9306 Level Translator Hookup Guide

October 31, 2013

A quick primer to get you going with the PCA9306 Logic Level Converter.

Raspberry Pi 2 Starter Kit Hookup Guide

October 29, 2015

Guide for getting going with the Raspberry Pi 2 starter kit

MCP4725 Digital to Analog Converter Hookup Guide

September 11, 2014

This is a quick hookup to help you get started with the MCP4725 DAC breakout board. This device allows you to send analog signal from a digital source, like the I2C interface on the Arduino microcontroller.

Wake-on-Shake Hookup Guide

March 13, 2015

A basic hookup guide for getting started with the SparkFun Wake-on-Shake.

Using the Logic Level Converter

September 5, 2013

What the Logic Level Converter is, how it works, and how to use it!

Using EAGLE: Schematic

September 5, 2013

How to design a PCB in EAGLE using through-hole parts.

How to Install and Setup EAGLE

September 5, 2013

Not just how to download and install EAGLE, but how to install the SparkFun EAGLE Libraries and scripts.

SparkFun USB UART Breakout (CY7C65213) Hookup Guide

February 2, 2017

How to use SparkFun's advanced USB UART breakout, based on the Cypress CY7C65213.

Mini GPS Shield Hookup Guide

December 15, 2016

A hookup guide for the SparkFun Mini GPS Shield.

ZX Distance and Gesture Sensor Hookup Guide

July 9, 2015

How to connect and use the SparkFun ZX Distance and Gesture Sensor with an Arduino.

Proto Pedal Example: Analog Equalizer Project

September 22, 2016

Building a gyrator-based analog equalizer using the Proto Pedal.

Si7021 Humidity and Temperature Sensor Hookup Guide

May 5, 2016

The Si7021 humidity and temperature sensor is an easy to use, digital, low-cost sensor to aid you in all your environment sensing needs.

Voltage Dividers

February 8, 2013

Turn a large voltage into a smaller one with voltage dividers.

ASCII

June 13, 2016

A brief history of how ASCII came to be, how it's useful to computers, and some helpful tables to convert numbers to characters.

Hackers In Residence - The Tethered Quad

September 18, 2013

Our first-ever "Hackers in Residence" Tara Tiger Brown and Sean Bonner created a quadcopter that stays tethered to the ground. Here's how they did it!

Uh-Oh Battery Level Indicator Hookup Guide

April 9, 2014

Learn how to assemble and use the Uh-Oh Battery Level Indicator Kit.

Bi-Directional Logic Level Converter Hookup Guide

October 25, 2013

An overview of the Bi-Directional Logic Level Converter, and some example circuits to show how it works.

DigitalSandbox PicoBoard

August 15, 2014

This tutorial walks through how to upload code to your Digital Sandbox to emulate the functionality of the PicoBoard with Scratch.

Si4703 FM Radio Receiver Hookup Guide

August 13, 2015

Add some tunes to your project with the Si4703 FM Radio Receiver Breakout.

LED Cloud-Connected Cloud

February 22, 2016

Make an RGB colored cloud light! You can also control it from your phone, or hook up to the weather!

Galileo Experiment Guide

September 19, 2014

Learn how to work with the Galileo with this Awesome experiment guide! Follow 16 experiments to become a Galileo all-star.

INA169 Breakout Board Hookup Guide

November 20, 2013

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

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The New UAV Development Board v4 (UDB4) and Dizzy Gyros

October 20, 2011 9

The new UDB4 is smaller and more powerful than before. See how the developers refined the system using very interesting testing techniques.

Another Box Full of New Products!

June 17, 2011 90

We have another week full of new products for you this Friday, as well as a new studio design.

Combat Bots course preview

July 6, 2016 3

Here's what the combat part of AVC will look like

Friday Celebration of New Products!

June 10, 2011 59

Check out our selection of new products for this week.

Engineer Thursday - Bring on the Lasers!

June 20, 2013 13

Open-sourcing Laser Technology and the SparkFun visit the Optics Lab at the School of Mines

The AVC Digital Program

August 29, 2016 1

Robotic competition not enough for you? Not to worry -- this year's AVC promises so much more.

Guest Post: FIRST Robotics and the ChapR Team

January 21, 2015 1

A story about a FIRST team doing big things for the robotics community.

Happy Arduino Day!

March 29, 2014 114

Today is the day - check out our great Arduino deals!

July Caption Contest Winner

July 24, 2013 6

Congratulations to Gizzygo - you're our winner this month!

Engineer Thursday - Using the Wake on Shake

April 25, 2013 16

Check out these projects using the Wake on Shake board!

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

February 13, 2014 12

The next chapter in the Raspberry Pi Aquaponics Time-laspe project.

July Caption Contest

July 16, 2013 394

Here we are again - time for a caption contest.

Tres Tutorials

June 23, 2008 1

Peter, Jim, and Leah get three great tutorials posted.

SbarkFun

April 14, 2016 6

Pooch-inspired projects for SparkFun's four-legged besties

Designing for Graceful Failure

December 15, 2014 45

Fault tolerance, graceful degradation - and failing in a not-so-painful way.

Bring on the Robots at USASEF Friday Sneak Peak

April 18, 2014 0

SparkFun Electronics is headed to the United States of America's Science and Engineering Festival. For the Friday Sneak Peak on the 25th of April we'll be hosting a Robotics Social Time in conference room 150B and we want you to bring your robots to visit!

Soldering Workshop at Craftsbury Public Library

February 9, 2015 0

Learning the art of soldering at Craftsbury Public Library!

The Free Shipping Sweet Spot

May 8, 2014 89

Wrangling our free shipping program into shape.

Visit Us This Weekend at Denver Mini Maker Faire

May 1, 2014 6

This weekend is the first-ever Denver Mini Maker Faire - come say hello!

Raspberry Pi 3

February 29, 2016 13

An overview (and pre-orders!) of the newest Raspberry Pi single board computer.

Enginursday: Time-lapse with the Raspberry Pi

November 21, 2013 24

How to create a simple and cheap time-lapse rig with the Raspberry Pi.

Heading to Boston and NSTA 2014

April 2, 2014 0

Our education team is headed to Boston this week for NSTA 2014. Please stop by our booth and see what we've got going!

Friday Product Post: Leeloo Dallas Multiplex

August 19, 2016 0

Mul-ti-pass! A new Multiplexer Breakout along with a revision to our tried and true aluminum enclosures.

Enginursday - Open Source Documentation Tools

August 22, 2013 28

Discussion of the OS tools we are using, and a GitHub update.

'Tis the Season

December 17, 2009 10

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

New Product Friday: Hot New Products

December 14, 2012 26

We've got a new batch of hot products this right right in time for the holidays.

Cyber Monday 2013 Recap

December 11, 2013 40

A look behind the scenes as a bunch of stuff went on sale, leading to SparkFun's biggest week ever.

Enginursday: Radio Shack: A Remembrance

February 12, 2015 30

Radio Shack is finally declaring bankruptcy, but for many of us, it died a long, long time ago

Tips for a Better E-Textiles Workshop

January 10, 2014 1

Here are a few tips for creating your e-textiles workshop and activities.

Reflow Oven for Sale!

September 1, 2014 13

We are selling our "older" reflow oven for the low low price of $2000 or a reasonable offer.

Back to the Grindstone: A Bunch of New Stuff

April 20, 2009 10

A Make Meetup in Denver, Ardubot and Annoyatron face off, and a bunch of new products.

Where did all that rain come from?!

October 16, 2013 11

Why the rain and what happened to the Boulderites.

AVC Reminder

March 26, 2013 11

Don't forget to sign up for the SparkFun AVC!

New Product Friday: OLED Dog, New Tricks

October 18, 2013 37

A couple new products and a demo. Check out the Friday New Product Post for this week.

Enginursday: Get Roving!

March 28, 2014 8

On April 5th, teams from around Colorado will try out their miniature Mars rovers in the Great Sand Dunes.

January Caption Contest Winner!

January 23, 2014 5

Congrats Member #468914, you're the proud owner of the Kits Kit!

Ultrasonic Ranger Info Video

June 10, 2010 7

Ultra-cool ultrasonic sensors are a perfect and simple way to add object or distance sensing to your project!

Power Supply Protection

January 13, 2009 31

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

The First-Ever Complete Teardown of Google Glass

June 11, 2013 21

Check out Star Simpson and Scott Torborg's teardown of the Google Glass!

2015 Cosplay with Electronics!

June 4, 2015 2

A look at 2015 releases, and the electronic costuming opportunities they bring!

SparkFun Goes 3D

January 8, 2015 18

Introducing Embedded 3D Models of SparkFun products!

Enginursday: The Spark Arts

September 26, 2013 7

Exploring the SpookFun catalog for some fun Halloween hacks!

Enginursday: Adventures in Building My Own Workbench

February 20, 2014 94

Designs for a custom, DIY electronics workbench, and some lessons I learned in the process.

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Arduino Buying Guide

March 3, 2017

Arduino Buying Guide Let’s face it, there are a lot of different Arduino boards out there. How do you decide which one you need for your project? With this table, you can not only compare featu…

PicoBoard Library Resources

April 21, 2015

Here are some great resources to include the PicoBoard as part of your library or makerspace.

Explorations in Arduino Physics: Ideas and Experiments that Integrate this Low-cost 8-bit Microcontroller into your Classroom

July 28, 2015

This is a presentation on a series of tools that can be used in experiments, activities, and labs to investigate, measure, and analyze physics phenomena.

Serial LCD Reaction Timer Activity

July 21, 2016

Build your own Serial LCD Reaction Timer. This is a great activity that uses the SparkFun RedBoard, Arduino, or other compatible microcontroller. This has

ArduBlock: Graphical Programming Environment for Arduino

February 6, 2014

ArduBlock is a Scratch-like interface for Arduino and allows you to program Arduino using drag-and-drop blocks that free you of syntax errors.

Installing Custom Boards in Arduino

July 13, 2015

Written By Timothy Holmberg Last Edited 7/13/15 Introduction We’ll use a great project from Casey at Sparkfun for our example today. In this project Casey makes a cool GPS based Speedometer fo…

ASEE 2014 K-12 Workshop Materials

June 14, 2014

Encouraging Creativity, Gender Equity, and Arts in the STEM Classroom with Conductive Thread and LilyPad Arduino. Example Code Ardublock install – Unzip

ATTiny85 Quick Reference

February 13, 2015

ATTiny85 Cheatsheet / quick reference. This has all of the most commonly used Arduino commands in one place.

GPS Buying Guide

January 1, 2012

GPS Buying Guide Above your head, right now, at an altitude of about 20,200 km there is a system of navigation satellites. There’s 35 of them, 24 active at any given time. It cost millions and …

Nathan Seidle Bio

August 15, 2016

Nathan Seidle is the founder of SparkFun Electronics in Boulder, Colo. Nathan founded SparkFun in 2003 while an undergraduate student studying electrical engineering. Nathan opened SparkFun to ful…

Digital Sandbox Intro to CS Activities

July 29, 2016

This is a collection of activities that we created to introduce students to basic CS concepts using the Digital Sandbox.

RedBot Library Quick Reference

June 26, 2016

This is a nice summary of the RedBot library. This is useful for introducing the RedBot commands to students.

Simblee BLE

August 10, 2016

Simblee is a small Arduino-programmable Bluetooth 4.0 (BLE) module allowing you to get started playing with IoT (Internet of Things). Unlike other IoT offerings, Simblee integrates the GUI descript…

HotSheets: Scratch

April 18, 2014

These HotSheets cover a few basic introductory exercises at learning how to use Scratch and the PicoBoard.

SIK Teachers Guide

July 21, 2016

This is a summary of learning objectives, vocabulary, and key concepts that are used in each of the circuit examples in the SIK.

Programming with Simon

February 6, 2014

This material shows a way to re-use our popular Simon game to teach programming after you have used it to teach soldering.

SparkFun Curriculum: Introduction to Design

June 15, 2016

These are two full semester courses focused around Engineering Design using the SparkFun Inventor's Kit.

Resistance Board

February 6, 2014

A project using e-textiles to show the concept of resistance in an intuitive manner.

Funding Sources for MakerSpaces in Libraries

April 21, 2015

Here is a short list of grants and funding sources for building out your own makerspace in your library or community center. Here are links to the raw sour

RedBot Dance Challenge

July 26, 2016

Using the RedBot chassis or a chassis of your own design, choreograph a dance routine for your robot!

How to use a multimeter

October 3, 2016

This is a hand-out developed from our popular "How to use a Multimeter" tutorial.

ISS National Design Challenge

October 31, 2016

ISS National Design Challenge Have questions? Let me know! mike.grusin@sparkfun.com Welcome CASIS ISS National Design Challenge participants! The following parts may be useful when developing your …

Actobotics

January 15, 2014

Actobotics Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actob…

XBee Buying Guide

October 10, 2016

XBee Buying Guide Welcome to the wireless world of XBee. Maybe you’ve heard of it, maybe you haven’t, either way you are in for a fun ride. XBees are tiny blue chips that can communicate …

Wireless Buying Guide

January 1, 2012

Wireless Buying Guide When it comes to throwing data over the ether, there are a lot of options. If you’re confused about what wireless technology is best for your next project then keep on rea…

Paper Circuits: Lotus Flower Pop Up Card

May 6, 2014

Templates used in the Have Fun with Paper Circuitry workshop at GESTEM on 5/9/14.

Tours

September 22, 2014

Ever wondered what sort of hijinks go on behind the scenes at SparkFun? Do you dream of seeing certain SparkFun folks in their natural habitat? Well you’re in luck, because we host public tours …

e-Textile Mask Workshop

April 9, 2014

Presentation on sewing circuits and creating a light up mask used during Girl Scout Troop 73265's visit to SparkFun HQ.

Paper Circuits Pin

March 31, 2014

This quick craft project shows you how to create a circuit using copper tape instead of wire to light up an LED and make a wearable piece of e-craft art.

SuperQuest

June 2, 2015

Please Join our Google+ Community page for more content and discussion beyond the workshop. Oregon Tour 2015 -- Introduction to Arduino and Galileo SparkFun Electronics i…

Customer Support

January 20, 2017

Customer Support How to Help Yourself General questions about SparkFun? Check our FAQ for answers! Want to return something you purchased? The Returns Policy is for you! There is community supp…

PicoBoard & Scratch Resources

January 17, 2015

PicoBoard & Scratch Resources Here are a few resources that we’ve used here at SparkFun around teaching PicoBoard and Scratch. This page is a work-in-progress. Please email us at (education…

EdWeek: Making and Measuring Batteries

May 4, 2016

STEM Project: Make and Measure a Battery Learn about batteries with a concept video and tutorial. Then, create a simple battery using a lemon, …

EAGLE

August 29, 2016

Design for Manufacture with SparkFun Over 500 curated and proven EAGLE design files to help you get started …

Accelerometer, Gyro and IMU Buying Guide

September 20, 2016

Accelerometer, Gyro and IMU Buying Guide Accelerometers and gyros are becoming increasingly popular in consumer electronics, so maybe it’s time you added them to your project! Scrolling through…

Introductory Arduino Materials from Portland State University

February 6, 2014

A wide range of labs covering beginner and intermediate Arduino programming, DC and analog circuits, and two larger scale projects.

Technical Assistance

February 2, 2011

Welcome to our Technical Support page! We have a small team of 6 technicians who are here to help you with Sparkfun products. Your ticket will be processed in the order that is it received. Technical…

MESA National Challenge

May 19, 2015

MESA National Challenge SparkFun is proud to announce a great educational partnership with Mathematics, Engineering, Science, Achievement (MESA) around the MESA National Challenge. S…

Defend The Open Internet

July 14, 2014

Defend the Open Internet When cash speaks louder than innovation the Internet ceases to be open.This could happen. You can stop it. I. The Internet of today Today the Internet is an open plac…

Stepoko

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 …

SparkFun Site FAQ

January 1, 2012

Welcome to our Frequently Asked Questions page! Click a link below for answers to your questions. If you still need help, Contact us! Placing an Order How do I create an account? What if I don&rsq…

Arduino 101 Workshop

April 12, 2016

Education 101 Hackathon SparkFun is proud to announce a great educational partnership with both Intel and local educational partners to provide a 2 day educator hackathon. SparkFun is …