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Terminator Eyeball Upgrade
Add a cybernetic animated eyeball to your T-800 Terminator!
by John Park
Cyberdyne forgot to give this model a lifelike eyeball -- that's OK, we'll use a HalloWing and convex lens to fix the problem! The eye will look around menacingly, set inside this costume mask turned into an animatronic bust. Place it in your window or popping up from behind a fence to freak out your visitors!
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CircuitPython 101: Working with Lists, Iterators and Generators
Learn more about working with lists and what to do when they're very large
by Dave Astels
Lists are a central data structure in Python. This guide will look at list usage, cases where lists are too big to fit in memory (maybe even infinitely long), then contain items that are easily computable on the fly.
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Crawling Animatronic Hand
Animatronic disembodied hand that crawls along the floor
by Dano Wall
This animatronic hand crawls creepily along the floor until it finds a cool, dark place to hide. The hand is operated with one high torque servo motor mounted in the wrist, and controlled with a Circuit Playground Express programmed in MakeCode.
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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Halloween Monsters with CRICKIT and Circuit Playground Express
Halloween themed monsters that react to sound and light
by Dano Wall
Turn cups and other recyclable materials into interactive Halloween decorations! Using Circuit Playground Express and MakeCode, get some dancing monsters going for your next haunt.
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Gemma Color Touch Pendant Necklace
Beautiful jewelry that changes color with your touch
by Erin St Blaine
Add a splash of color and light to any outfit. This beautiful animated light-up necklace goes with anything: just touch the face of the necklace to change its color palette. Capacitive touch and a Gemma M0 power two NeoPixel rings for beautiful animated lights.
FEATURED
All About Batteries
Everything you ever wanted to know about batteries!
by lady ada
This article is about batteries (if you couldn't tell) - and how to decide which batteries will run your project best! I'll cover both rechargeable and "one-shot" batteries, trying to cover everything I've learned.
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NeoTrellis Game
Make a simple color match game.
by Ruiz Brothers
Use the Adafruit M0 Express and NeoTrellis 4x4 button PCB to make a fun color matching game.
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Stop Motion Animation
How to get started making your own animated stop motion films!
by John Park
Learn the fundamental techniques of stop motion using a tablet or smart phone with stop motion software and simple characters.
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AM2315 - Encased I2C Temperature/Humidity Sensor
An I2C-interface temperature & humidity sensor in a nice enclosed style!
by Kattni Rembor
This sensor contains a thermistor temperature sensor and a capacitive humidity sensor. A small microcontroller inside does the readings and provides a simple I2C interface for reading the finished & calibrated output data. This guide will cover how to use this sensor, complete with wiring diagrams and code examples. Check it out!
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Glitter Positioning System
Find your friends with LoRa, GPS, and a compass module.
by Brennen Bearnes
Use the Feather M4 Express, Ultimate GPS FeatherWing, and Radio FeatherWing to build a set of boxes which will point to one another with a NeoPixel ring.
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.
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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reef-pi Guide 4: Water Level Controller
Maintain consistent water level and salinity in aquariums using reef-pi
by Ranjib Dey
Water evaporation reduces water volume inside a marine aquarium, affecting the salinity. This guide will walk through the build process of a water level controller (also called as auto top off system) that employs a water level sensor to detect water evaporation and then turn on/off water pump to add fresh water. This guide builds upon the power controller guide.
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Halloween Sentry-Bot with CRICKIT for CPX
Build a motorized monster that detects your presence
by Dano Wall
Learn how to detect vibration, sounds, and light to trigger different actions by your robot. All using MakeCode running on a Circuit Playground Express and an attached CRICKIT robotics board.
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Princess Peach LED Crown
Make A 3D Printed Glowing Crown
by Ruiz Brothers
Use GEMMA M0, LEDs and 3D Printing to make a glowing crown.
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Last-Minute Halloween Accoutrements with HalloWing
Quickly scare up a costume or accessory with items found in Adabox 009
by Phillip Burgess
Oh noes! An 11th-hour invite to a Halloween function and you don’t have a costume ready! Or maybe you want something discreet but fun when the work dress code doesn’t permit a full werewolf getup. HalloWing to the rescue! Our spooky little development board, plus a few extra tidbits from Adabox 009 (or your parts collection) can quickly make an eye-catching accessory that no good host would turn you away for being under-dressed. Some of these ideas require just a few minutes.
POPULAR
Memories of an Arduino
How to get the most from your Arduino Memory
by Bill Earl
As your Arduino projects get more sophisticated, they tend to grow to the point where memory limitations can become a problem. This guide explains the different types of Arduino memory and how to use them most effectively.
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Circuit Playground - O is for Ohm
Sing a long and learn about Ohm's Law!
by C. Cunningham
It’s the Circuit Playground campfire musical! Adabot, Mho, and Minerva learn all about a foundation of electrical engineering - Ohm’s Law.
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HalloWing Jump Scare Trap
Scare someone with a rubber spider or roach dropped right in front of their face! HalloWing with a PIR sensor and servo motor do your scaring for you!
by John Park
This makes a great jump scare for you porch on Halloween. The PIR sensor will detect a person at just the right moment to drop a cockroach suspended from a filament line. The HalloWing will also play a terrifying hissing sound over it's speaker port! Use the TFT display for user interface prompts. Program it all using CircuitPython.
POPULAR
Adafruit LED Backpacks
Control small LED matrices with ease
by lady ada
What's better than a single LED? Lots of LEDs! The matrices use a driver chip that does all the heavy lifting for you: They have a built in clock so they multiplex the display. They use constant-current drivers for ultra-bright, consistent color, 1/16 step display dimming, all via a simple I2C interface. Here is a detailed guide showing you how to solder, wire and control the display.
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Adafruit VEML6075 UVA / UVB / UV Index Sensor
A real UVA + UVB light sensor with UV Index calculations
by lady ada
This little sensor is a great way to add UVA and UVB light sensing to any microcontroller project. The VEML6070 from Vishay has both true UVA and UVB band light sensors and an I2C-controlled ADC that will take readings and integrate them. The sensor also comes with calibration registers so you can easily convert the UVA/UVB readings into the UV Index.
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Adafruit MPRLS Ported Pressure Sensor Breakout
A ported pressure sensor
by lady ada
This pressure sensor is special because it comes with a metal port! Unlike other pressure sensors, you can easily attach a tube to it, to measure air pressure inside a close space. In particular we think this would be a great sensor for use with making DIY assistive tech "Sip & Puff" interfaces, or measuring the pressure within a vacuum chamber or other pressurized container.
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Creating and Maintaining Your AdaBox Subscription
Become an AdaBox Subscription Master!
by S. Donaghy
Use this guide to learn all about our AdaBox subscription service and how to manage your subscription from your account!
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CRICKIT WobblyBot
A small CRICKIT based hopping robot you can build 3 ways
by Dave Astels
Use a robot body and the CRICKIT robotics platform. Then customize by adding some brains to it in 3 different ways: choosing from 3 different sets of hardware and three different programming languages.
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reef-pi Guide 3: Temperature Controller
Controlling aquarium temperature with reef-pi
by Ranjib Dey
The right temperature is a must for all reef aquariums. Tropical coral reefs thrive around 78 to 80 degree Fahrenheit. This tutorial will extend the power controller with a temperature sensor to automate temperature control using a heater and cooling device.
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Hocus Pocus Book - Hallowing Eye
Booooook!
by Ruiz Brothers
Make the iconic book with the Adafruit HalloWing M0 Express
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AdaBox 009
Explore and use the contents of your AdaBox 009
by John Park
Are you the kind of person who doesn't like taking down the skeletons and spiders until after January? Well, we've got the ADABOX for you. This is electronics at its most spooky! ADABOX 009 is Halloween themed, for all of us who love scares, costumes, and (of course!) candy. OK so we didn't fill this ADABOX with candy corn, but we did curate a collection of inspiring electronics to make you Halloween more electric. You might have so much fun, you'll celebrate it year round!
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HalloWing Magic 9 Ball
Answer any question with a shake of the Magic 9 Ball!
by John Park
This spooky project uses the HalloWing's built-in accelerometer to detect when you shake the ball, and then calculates the proper answer for any question, which is shown on the HalloWing's TFT display!
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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!
FEATURED
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.
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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.