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44 GUIDES | 256 PAGES | 9 FEATURED | 2 POPULAR

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Multi-tasking the Arduino - Part 3

Unleashing the power of the NeoPixel!

Digital RGB LEDs like the Neopixel are greatfor creating awesome lighting effects. But keeping them responsive to user inputs at the same time can be challenging. And what if you want to have different parts of your project animated in different ways? In this guide, we'll explore techniques to make your pixel patterns lively, flexible and responsive.

Pocket Galaxy

A blackhole in your pocket :)

This project uses NeoPixels and see-through mirrors to create a seemingly endless tunnel of leds, all enclosed in a 3d printed case. A LiPoly battery and charger keeps it blinking on the go.

The Pixif

A simple, efficient SPI front-end for NeoPixels

A PIC is used as a SPI Master to create a simple interface to up to 21845 NeoPixels. After being configured with the number of attached NeoPixels the Pixif continuously retrieves the RGB values via SPI and generates the NeoPixel GRB bitstream. The update rate may be throttled via a synchronization input. This approach frees the host processor to concentrate on its algorithms especially when its SPI Slave has DMA support.

Multi-tasking the Arduino - Part 2

Excuse me while I interrupt myself...

Explore the magic of interrupts. Learn how to harness timer interrupts to keep your tasks running like clockwork. And use external and pin-change interrupts to notify you of events that need urgent attention.

DIY Google's "Physical Web" UriBeacons with the Bluefruit LE Friend

Using the Bluefruit LE Friend to advertise URIs with Google's Physical Web Project

This tutorial will show you everything you need to know to turn your Bluefruit LE Friend in a UriBeacon node, advertising UriBeacon data as described in Google's Physical Web project, making any BLE device capable of advertising a unique gateway URL that users can navigate to.

Using NeoPixels and Servos Together

An introduction to AVR peripherals.

Conventional wisdom holds that you can't use NeoPixels and servos together in the same Arduino sketch. Learning to directly control the AVR microcontroller's hardware peripherals (or just using our ready-made library) makes this combination possible…with some catches.

PHILLIP BURGESS

Trinket “Question Block” Sound Jewelry

Jump around, jump up and get down!

“Ba-DING!” The classic 8-bit chime from our favorite retro video game finally makes a triumphant comeback in jewelry form. It’s so tiny and adorable you're probably wondering, “How much?” This is custom…you can only make it, not buy it!

PHILLIP BURGESS

SmartMatrix Remote Controlled LED Art Display

Remote controlled display to brighten up any room

Make a bright LED display to play back animated GIFs and patterns using a Teensy 3.1 and 32x32 pixel RGB LED Matrix. Sit back and control the light show from across the room through an IR remote

LED Lightbox

Build a decorative, programmable LED display pretty enough to hang on a wall!

If you're looking for a simple beginner project that'll produce something beautiful, this is the guide for you. It needs little more than a razor knife and a hot glue gun to put this one together, and it makes a great gift too!

POPULAR

Multi-tasking the Arduino - Part 1

Make your Arduino walk and chew gum at the same time.

Once you have mastered the basic blinking leds, simple sensors and buzzing motors, it’s time to move on to bigger and better projects. That usually involves combining bits and pieces of simpler sketches and trying to make them work together. The first thing you will discover is that some of those sketches that ran perfectly by themselves, just don’t play well with others. There are ways to effectively juggle multiple tasks on an Arduino. This series of guides will show you how.

Sending an SMS with Temboo

Use Temboo to connect your Arduino to the cloud.

This guide will show you how to send an SMS from your Arduino board using Temboo, a service that lets you connect your Arduino project to over 100 different APIs.

DRAFT PUNK

The poor man's Daft Punk Helmet

If you're like me, you loved the Adafruit Daft Punk helmet that showed up on our blog a few weeks ago... but, as my 3D printer is a little bit smaller than a TAZ, and funds and time are limited, I thought for Halloween I would make my own version, based around a $5 mask from Party City that looks a little bit like Cobra Commander.

The PICsellator

Veni, vidi, blinki

One PIC, some NeoPixels, a little math, and a big bucket of randomness.

SmartMatrix Animated GIF Player

Customize the display with your own GIF collection

Want to add bright and colorful animations to your projects, or make a cool low resolution display? Play animated GIFs on a 32x32 pixel RGB LED Matrix using a Teensy 3.1 and microSD card with this guide.

Wireless Game Show Poppers for the Classroom!

Pro Trinket + Hacked Duo Pop Game = Game Show Fun!

Ever wanted to create your own game show environment. Hack a Duo Pop Game infrared (IR) receiver so you can create your own game show system using wireless poppers with a PC or Mac computer. This modification allows the IR receiver to interface with both PC and Mac game show software via the USB. This project leverages lessons learned from previous tutorials at adafruit.com involving 1) IR decoding and 2) the virtual USB library. This is a great weekend project for learning about wireless IR protocols and USB communication using the Pro Trinket.

FEATURED

DIY Pocket LED Gamer - Tiny Tetris!

Fun with 16x8 pixels!

Build you own pocket Tetris gaming device that plays not only Tetris, but Snake and more! Choose your favorite color of LEDs, then 3D print a case.

FEATURED

3D Printed Daft Punk Helmet

Build a wearable LED Helmet!

In this project we’re going to show you build your own daft punk inspired helmet with 3d printing, and diy electronics.

MICROCONTROLLERS

FEATURED

Wave Shield Talking Clock

Adabot tells time. You can too!

Using the Adafruit Wave Shield for Arduino, this chatty clock can be customized with your own voice.

PHILLIP BURGESS

Madison's NeoClock - A PIC + KiCAD + NeoPixel adventure

A NeoPixel desk clock you may only have to set once.

This is a desk clock based on the NeoPixel ring-12 and -24. It displays hours, minutes, and seconds in a unique way using time-dependent colors and tapering. The clock adjusts its brightness according to ambient light and has a ChronoDot to keep extremely accurate time.

3D Printed LED Knuckle Jewelry

Add blinky to your bling!

Customize some fun 3D printed jewelry with electronics that spell out words

FEATURED

UNTZtrument: a Trellis MIDI Instrument

UNTZ UNTZ UNTZ!

Build and customize your very own open-source button grid controller. This DIY kit comes with delicious translucent button pads, driver boards, diffused white LEDS and a custom laser cut enclosure. The result is a sturdy and elegant but also super-hackable controller device for music, video…or something else???

PHILLIP BURGESS

How to program a Zumo Robot with Simulink

Make the Zumo Robot move along a trajectory using Simulink

Use Simulink to simulate and control the motors in an Arduino Uno powered Zumo Robot to make it move along a curve. This is the second tutorial in a series on using Simulink with Arduino Uno.

FEATURED

Convert your Model M Keyboard to Bluetooth with Bluefruit EZ-Key HID

Because nothing screams "portable" like a 6 lb keyboard.

Adafruit's Bluefruit HID controller is the easiest way to instantly add an HID keyboard or mouse interface to your project, even without a microcontroller. Did you know that you can also use it to convert a normal wired keyboard to supporting Bluetooth? In this project you'll learn exactly how to do it.. and in the process you'll bring an iconic piece of computing hardware into the modern age. Time to start digging around in your closet for that old IBM PC you haven't seen for a few years, because with Bluefruit and the Model M, "it just clicks".

FEATURED

Make a Guggenhat: Bluetooth-connected wearable NeoPixel marquee hat

Your name (or any other 20 character artistic statement) in lights!

Adafruit’s Bluefruit devices are hands-down the easiest way to get Arduino communicating over Bluetooth. Taking inspiration from the helical Guggenheim museum, this project coils a contiguous reel of NeoPixels around a dapper top hat to create a wearable scrolling message display you can control with your iOS/Android phone or tablet.

PHILLIP BURGESS

KTOWN's Guide to Readable C Code

PLZ RITE GOOD KOD3!

Internal guidelines on writing readable, maintainable and understandable code in C and C++.

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