Ever wish your clothes could change color to match each other? Make a chameleon scarf to match every outfit using the Flora color sensor and 12 color-changing LED pixels diffused by a ruffly knit scarf. Check out the video on YouTube (please subscribe!) and Vimeo, and make your own with the full tutorial on the Adafruit Learning System.
Flora Color Sensor – TCS34725 – Your electronics can now see in dazzling color with this lovely color light sensor. We found the best color sensor on the market, the TCS34725, which has RGB and Clear light sensing elements. An IR blocking filter, integrated on-chip and localized to the color sensing photodiodes, minimizes the IR spectral component of the incoming light and allows color measurements to be made accurately. The filter means you’ll get much truer color than most sensors, since humans don’t see IR. The sensor also has an incredible 3,800,000:1 dynamic range with adjustable integration time and gain so it is suited for use behind darkened glass or fabric.
Your electronics can now see in dazzling color with this lovely color light sensor. We found the best color sensor on the market, the TCS34725, which has RGB and Clear light sensing elements. An IR blocking filter, integrated on-chip and localized to the color sensing photodiodes, minimizes the IR spectral component of the incoming light and allows color measurements to be made accurately. The filter means you’ll get much truer color than most sensors, since humans don’t see IR. The sensor also has an incredible 3,800,000:1 dynamic range with adjustable integration time and gain so it is suited for use behind darkened glass.
We add supporting circuitry as well, such as a 3.3V regulator so you can power the breakout with 3-5VDC safely and level shifting for the I2C pins so they can be used with 3.3V or 5V logic. Finally, we specified a nice neutral 4150°K temperature LED with a MOSFET driver onboard to illuminate what you’re trying to sense. The LED can be easily turned on or off by any logic level output.
For more flexibility, we’ve made two different versions of this board: A breadboard-friendly breakout, and a wearable version designed to work with the Flora wearable platform.
Stay tuned, on Wearable Wednesday we’re going to have an amazing project you can build these color sensors and FLORA!
This guide walks through the process of assembling and configuring our LCD displays with USB/serial backpack and stand as a realtime system monitor. These displays are great for monitoring the health and status of “headless” systems such as servers, small Raspberry Pi installations, or as an auxiliary information display on your regular computer. You can get one of our cute acrylic stands in the Adafruit shop.
This is a very simple FLORA project with no soldering– a single NeoPixel lights up on an embroidered angler fish on a pair of shorts. The main board is stitched on the front of the design, in the belly of the fish. A snap is used on the fin as a digital switch, triggering a color change in the pixel in the angler’s lure. Follow the circuit diagram to stitch up this circuit, and tuck the battery in the pocket.
This tutorial is for our 1.8″ diagonal TFT display. It comes packaged as a breakout or as an Arduino shield. Both styles have a microSD interface for storing files and images. These are both great ways to add a small, colorful and bright display to any project. Since the display uses 4-wire SPI to communicate and has its own pixel-addressable frame buffer, it requires little memory and only a few pins. This makes it ideal for use with small microcontrollers.
The shield version plugs directly into an Arduino with no wiring required. The breakout version can be used with every kind of microcontroller.
The Pareto Principle — also known as the 80/20 Rule — is the idea (originally from economics, but now applied in many ways) that 80% of results stem from 20% of the effort.
Devoted film fans will spend countless hours and hundreds of dollars (occasionally even thousands) to create flawless replica props for their personal collections. The iconic eye of HAL 9000 from 2001: a Space Odyssey is one such object of desire…popular enough that detailed (and pricey) licensed reproductions exist. This is cool stuff! But if we relax our criteria just a bit, you or I can turn out a pretty decent, recognizable facsimile in a weekend for just a small fraction of the cost. The 80/20 rule in action!
We’re not selling a prop or even a kit here…that would raise a big licensing stink, so please don’t ask. What follows are some ideas on creating one yourself. Much like our not-a-Back-to-the-Future-clock project, the concept came about when customers noted that a component already in our shop resembled an unrelated film item — in this case, our Massive Red Arcade Button and HAL’s distinctive lens.
In order to get raw parsed data out of a magstripe reader, we first experiemented with a MAGTEK Centurion Keyboard Encoder (PN-21073062). We found that although we could get all 3 tracks of data, it was not possible to have it parsed out. We then purchased a raw magstripe decoder head with track 1 reading, the Omron V3A-6 (Datasheet here). By writing some parity checking code, we were able to read the raw data off of the magstripe, and parse it into output that would be ‘typed out’ as an emulated keyboard using a USB-enabled Teensy. An Arduino can also be used, and the data would be output as Serial which may also be useful.
Raspberry Pi, the little wonder-puter that’s taken the world by storm, is so affordable that we can create nifty single-purpose “appliances” around them without shame. Here’s our take on one of the more popular such applications: internet streaming media, the Pandora music service specifically.
With the addition of a small LCD, a few buttons and a USB wireless network adapter, the Raspberry Pi becomes an affordable self-contained music streamer that can be moved to any room of the house…wherever you need your tunes at the moment. Just connect power and speakers or headphones.
Our first open source Homeland Security non-lethal weapon project – The “THE BEDAZZLER: A Do-it-yourself Handheld LED-Incapacitator”.
After attending a conference where the $1 million “sea-sick flashlight” (named “THE DAZZLER”) was demonstrated by the US Dept. of Homeland Security, we decided to create our own version. For under $250, you can build your own dazzler and we’ve released the source code, schematics and PCB files to make it easy. A great Arduino project for people who really like blinking LEDs. We also added in a mode selection so you can put it into some pretty color-swirl modes, great for raves and parties!
Working on my thesis…when I really just wanted to play some Arkanoid. Unfortunately, my original NES was busted a long time ago (blinky), and furthermore I didnt even have a TV. Lucky for me I had a couple things kicking around my workbench that did the trick. This is a design for a very simple, very inexpensive portable Nintendo gaming system with built in games. Theres no provision for cartridges, but its comfy to play.
By Ladyada, back in the day’ – an oldie but a goodie
This project combines a whole heap of modules to enable a Raspberry Pi to power a large 1.2 inch 4 digit 7 segment display. A small switch switches the display between showing the temperature and the current time. The project uses a real-time clock (RTC) to ensure that the Pi always has the correct time, even if it is not connected to the Internet.
There are many different Arduino and Arduino Compatible microcontroller boards. Which one is right for your needs? This guide will help you to select a board that best fits your project requirements and/or level of expertise. Whether you are just learning the ropes or have specific project requirements in mind, the Adafruit Arduino Selection Guide can help you to make the right choice.
The low cost and full HD video playing capabilities of the Raspberry Pi make it ideal for building your own media center. This will allow you to play music and videos through your Raspberry Pi onto a TV.