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HalloWing Badge Image Viewer
Make your own image player badge with HalloWing and CircuitPython
by John Park
Learn how to display graphics on the HalloWing's TFT screen using CircuitPython. Attach a lanyard for instant personalized conference badge or "HELLO MY NAME IS:" sign! Press the captouch "teeth" to switch images and adjust brightness!
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The Things Network for Feather
Get connected to The Things Network by building a small weather node using a Feather M0 LoRa
by Brent Rubell
Connect an Adafruit Feather M0 LoRa to The Things Network - a distributed LoRaWAN network designed for the internet of things - by building a weather station.
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Adafruit NeoTrellis
Tile up some full color interactive buttons!
by lady ada
We've upgraded our popular Trellis elastomer button kits to now have a PCB with full color NeoPixel support! You heard that right, no more single-color LEDs, you can now have any color you like under the fantastic rubbery button pads we sell.
FEATURED
Animated LED Sand
Create interactive simulated grains of sand!
by Ruiz Brothers
Use a Feather, CharliePlex LED Matrix FeatherWing and a LIS3DH to create interactive simulated grains of sand with our 3D Printed enclosures!
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Circuit Playground Express Head-Tilt Ears
'Ear we go again
by Dave Astels
Use the accelerometer on the Circuit Playground Express to perk up an ear when you tilt your head.
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reef-pi Guide 2: Power Controller
Learn to control AC equipment using reef-pi
by Ranjib Dey
This guide will walk through the build process of controlling AC equipment using an automated power strip (power controller). The power controller allows scheduled and on-demand control. Power controllers are simple and inexpensive to build and it acts as a foundational layer for temperature or water level controllers.
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Build a Custom Front Panel
Your project works! Time to tuck it into a nice enclosure and create a front panel for all those knobs and lights.
by Jan Goolsbey
This guide will walk through the process of designing a high-quality front panel for your project's enclosure. We'll show how to fit components to the layout, create panel drilling guides, and will describe two techniques you can use to attach colorful label graphics.
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Distance Measurement with Ultrasound
Using MakeCode on the Circuit Playground Express to measure distance with an HC-SR04 ultrasound sensor.
by Kevin Walters
This project demonstrates how to interface the inexpensive HC-SR04 ultrasound sensor to a Circuit Playground Express. Microsoft MakeCode is used to explore the sensor's output.
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Hallowing Minotaur Maze
3D(ish) Graphics on a Microcontroller
by Phillip Burgess
Lose yourself in the Labyrinth, smoothly animated in 3D on the Hallowing display, using tricks that might have impressed Daedalus had he stuck around for microcontrollers and bitmapped graphics.
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Make It Change: Potentiometers
Learn to use potentiometers (variable resistors) in your projects.
by Mike Barela
How do you dial in the values you want your electronics to use? 9 out of 10 projects say they use a potentiometer! Variable resistors come in all sorts of types for different needs. This tutorial will get you started quickly in using potentiometers for your projects.
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Milk Jug Glow Skull
You can turn a milk jug into a light diffusing, screaming, inner-lit skull filled with HalloWing-driven NeoPixels
by John Park
Use a heat gun to form a milk jug into a copy of a prop skull that diffuses light beautifully. CircuitPython code creates a candle flickering effect on the internal NeoPixel strip. Two large red LEDs for eyes cap off this creepy look! Creepy yells and growls are sure to spook your visitors.
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Transistors 101
A practical guide to transistors and their use
by Dave Astels
This guide will provide an introduction to bipolar junction transistors: the basics of how they work, and how to use them. Special focus is on controlling higher power/current circuits from low power/current microcontrollers.
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reef-pi Guide 1: Setup and Demonstration
Installation and configuration of reef-pi, the open source reef tank controller, capable of automating AC equipment, DC pumps, LED lights and more
by Ranjib Dey
reef-pi is an opensource reef tank controller capable of automating day to day reef keeping chored including equipment control, temperature control, water level control, dawn to dusk light cycle. This is the first tutorial within the reef-pi tutorial series covering installation and configuration of reef-pi software on Raspberry Pi.
POPULAR
Adafruit DS3231 Precision RTC Breakout
Repent and temperature-compensate your oscillator, said the tick-tock man!
by lady ada
The datasheet for the DS3231 explains that this part is an "Extremely Accurate I²C-Integrated RTC/TCXO/Crystal". And, hey, it does exactly what it says on the tin! This Real Time Clock (RTC) is the most precise you can get in a small, low power package.
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Make It Shake, Rattle, and Roll: Accelerometer Use
Use the accelerometer on your Circuit Playground Express to detect movement
by Mike Barela
Tired of your brother/sister/parents going into your room? Or do you want your costume to do something when you move? You can do these and more with an inexpensive accelerometer sensor. Using the one on Circuit Playground Express, we'll show you examples in MakeCode and CircuitPython.
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Zelda: Breath of the Wild – 3D Printed Bladesaw
3D Print a Bladesaw
by Ruiz Brothers
Build this motorized Blade saw from Zelda Breath of the wild!
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Make It Hot or Cold
Use a Crickit and Circuit Playground Express to heat or cool items.
by Mike Barela
Keeping things at a certain temperature, heating them up or cooling them off is something we all do daily. Learn how to use some common electrical parts and a microcontroller to automate your heating and cooling needs.
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Glowing Mirror Mask
Halloween Masquerade Magic with NeoPixels
by Erin St Blaine
Create a holographic glowing mask with NeoPixels and a Hallowing. We've included three designs you can create with a vinyl cutter or cut by hand. Be the scariest skeleton on the street, the fiercest diving dragon, or the fanciest fairy at the faire.
FEATURED
Welcome to CircuitPython!
New to CircuitPython? This is the place to start.
by Kattni Rembor
You may have seen CircuitPython mentioned on the Adafruit site or on Discord. What is it? Why would you use it? Once you have a CircuitPython board, what do you do next? This guide has you covered from the moment you plug in your new board. Check it out!
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MIDI Solenoid Drummer
Use Crickit to build an automated percussive instrument.
by C. Cunningham
This project shows you how to use an Adafruit Feather, Crickit, & four 5V solenoids to build a MIDI sequenced miniature drumkit.
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HalloWing All-Seeing Skull
This skull is keeping an eye on you...
by John Park
Dress up an common skull prop with this interactive eyeball! A PIR sensor let's the Adafruit HalloWing know when a victim is approaching and wakes up to give them the evil eye!
FEATURED
Adafruit IO Home: Security
Protect against intruders by building a security system for a cardboard smart home using Adafruit IO.
by Brent Rubell
Interested in building a home security system? Why not start small by building a cardboard smart-home security system to monitor for intruders, burglars, and gasses in the air.
FEATURED
Automatic Cat Treat Dispenser
Train your cat to press a button to receive a reward
by Dano Wall
This simple robotics project uses CRICKIT for CPX to detect a capacitive touch press and dispense a reward.
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Motorized Marble Machine
Build an Automated Marble Run!
by Ruiz Brothers
Add a Crickit and Circuit Playground Express to automate this mesmerizing marble run!
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HalloWing Lightsabers
Create your own motion reactive laser swords with the HalloWing and NeoPixel strip.
by John Park
The HalloWing's onboard accelerometer, amplifier, and NeoPixel support make it easy to build a great-looking light saber that reacts to your movements with light patterns and sounds!
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Hallowing Spirit Board
The not-so-mystifying oracle
by Phillip Burgess
Move around an invisible spirit board that can be seen only through the Hallowing’s display…or touch one of the capacitive pads to have the oracle spell out a message on its own.
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CircuitPython on the nRF52
Blinka & her new pal the nRF52840
by lady ada
This guide will take you through the process of building/compiling CircuitPython for the nRF52840 bluetooth LE chipset
POPULAR
Adding a Real Time Clock to Raspberry Pi
Keep time at all times with a real time clock
by lady ada
To keep costs low, the Raspberry Pi does not include a Real Time Clock module. Instead, users are expected to have it always connected to WiFi or Ethernet and keep time by checking the network. Since we want to include an external module, we'll have to wire one up. We'll go with the easy-to-use and low-cost DS1307.
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Compost Friend!
Help your compost THRIVE with this waterproof, Circuit Playground, powered smart compost machine
by Isaac Wellish
Know when to turn and add wet or dry material to your compost with this sun powered, waterproof Circuit Playground compost optimization machine. With some simple temperature and moisture sensors, the NeoPixels on the Circuit Playground Express will tell you what your compost needs to thrive.
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Crickit Lab Shaker
Build a lab shaker to agitate parts with PVA supports!
by Ruiz Brothers
Use an Adafruit CRICKIT, Circuit Clayground Express and 3D printed parts to build a DIY lab shaker. Dissolve 3D print supports or perhaps mix your favorite liquids.
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Adafruit IO Home: Lights and Temperature
Learn all about home automation by building a cardboard smart-house, controlling its lights, and monitoring temperature!
by Brent Rubell
We're going to build a cardboard smart-house to learn about automating a house with Adafruit IO. This guide will go over lighting the house using Adafruit NeoPixels and monitoring the temperature and humidity inside.
POPULAR
USBtinyISP
AVR programmer & SPI interface
by lady ada
This is documentation for a simple open-source USB AVR programmer and SPI interface. It is low cost, easy to make, works great with avrdude, is AVRStudio-compatible and tested under Windows, Linux and MacOS X. Perfect for students and beginners, or as a backup programmer.
FEATURED
StarFlower Neopixel Strand with MakeCode
Clip 3d printed flowers onto an addressable Neopixel strand
by Erin St Blaine
Model and print clip-on neopixel diffuser covers in Fusion360 and make them glow using MakeCode and Circuit Playground. Customizing is a breeze, with no coding or software setup required. Great beginner project!
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Paper Airplane Launcher
Test your paper airplane designs with this DIY cardboard launcher
by Dano Wall
Build a launching device for paper airplanes. Test different designs and see which fly best! The project uses a Circuit Playground Express microcontroller and the Crickit robotics add-on board.
FEATURED
HalloWing Light Paintstick
Create bitmapped light paintings with HalloWing or Circuit Playground Express!
by John Park
You can create beautiful light paintings with pixel art magically floating in mid-air using a strip of NeoPixels and the HalloWing or Circuit Playground Express! Start with a bitmap up to 30x100 pixels, and then capture the image with a long exposure photograph!
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Adafruit Mini TFT with Joystick Featherwing
Add a dazzling color display to your Feather project with this Adafruit Mini Color TFT with Joystick FeatherWing.
by lady ada
This FeatherWing has so much stuff going on, we could not fit any more parts on the PCB! There's a 0.96" 160x80 Color TFT Display with 16-bit full color capability. And, so you can make a proper UI we added a 5-way navigation switch and two push buttons. The joystick can go left, right, up, down and 'in' for selection. Two buttons on the side can change modes or whatever you like.