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Raspberry Pi Analog to Digital Converters
How to read analog signals from Python with an analog to digital converter and Raspberry Pi.
by Tony DiCola
Learn how to connect a MCP3008 or ADS1x15 analog to digital converter to a Raspberry Pi and use it to read analog signals from Python code.
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Trash Panda
Adorable Hugging Panda Friend
by Dano Wall
An animal panda you can build out of a scrap Amazon box. Demonstrates how to use CRICKIT paired with Circuit Playground Express to control multiple motors at once.
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Controlling a Classic Nintendo R.O.B. Robot Using Circuit Playground Express
Forget finding an old CRT, R.O.B. the Robot can be controlled by you!
by Mike Barela
Nintendo released the R.O.B with the Nintendo Entertainment System (NES) back in 1985. Only two games ever used R.O.B.s capabilities and Nintendo shipped later units without R.O.B. Dust off your R.O.B. and control him with wirelessly with a simple CircuitPython program.
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Debugging CircuitPython On SAMD w/Atmel Studio 7
Un-Constricted CircuitPython Debugging in a Windows Environment!
by M. Schroeder
This guide will help you to start debugging CircuitPython on the SAMD21 or SAMD51, using Windows and Atmel Studio 7. Take the squeeze off virtual environments and do some work in your native operating system!
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Adafruit pIRkey
A Python Programmable InfraRed USB Adapter
by lady ada
The pIRkey adds an IR remote receiver to any computer, laptop, tablet...any computer or device with a USB port that can use a keyboard. This little board slides into any USB A port, and shows up as an every-day USB keyboard. The onboard ATSAMD21 microcontroller listens for IR remote signals and converts them to keypresses, mouse movements, or even USB serial output.
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Installing Microsoft MakeCode for Adafruit
A quick overview of installing MakeCode for local use or development.
by Brennen Bearnes
Microsoft MakeCode for Adafruit is a web-based code editor for physical computing. It provides a block editor, similar to Scratch or Code.org, and also a JavaScript editor for more advanced users. It can be installed on a desktop system, VM, or server system.
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Animatronic Hand
Build a cardboard animatronic hand with independent finger control using CRICKIT robotics controller board!
by John Park
Use the CRICKIT board with your Circuit Playground Express to control a cardboard animatroinc hand. Four servo motors pull the fingers into position using cable drive systems made from cord and straw guides. Program it all with CircuitPython to actuate as you press the capacitive touch controllers. You'll also learn to use the CRICKIT as an audio-animatronic controller with pre-programmed sounds and motions, such as counting in binary!
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Storage humidity and temperature monitor
Keep an "eye" on things that are best stored at a specific temperature and/or relative humidity.
by Dave Astels
Build a simple battery powered temperature and humidity monitor with a audio alert. This project uses the Adafruit Trinket M0 and Si7021 temperature and humidity sensor. A TPL5110 module provides battery management to ensure months of operation on a single battery charge.
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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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Makey Paper Craft
Make a waving Makey for your Maker Faire booth!
by Ruiz Brothers
Use a Circuit Playground Express and Servo to create a Waving Makey robot friend for your Maker Fair Booth!
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Living Starry Night Painting
Build your own animated version of Starry Night
by Dano Wall
Add movement and light to famous works of art using Circuit Playground Express, CRICKIT, and CircuitPython. This beginner level project uses simple household materials and teaches basic programming skills.
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PiGlass
Build a Raspberry Pi based wearable computer
by M. Desmarais
With the wearable PiGlass, you can take HD pictures and videos and upload them to Dropbox. You can listen to Bluetooth music streaming from your phone or computer. You can also enable Youtube audio streaming via mps-youtube and livestream from your camera to Youtube.
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Adafruit Motor Shield V2 for Arduino
Stackable, high current DC and Stepper motor shield for Arduino
by lady ada
The original Adafruit Motorshield kit is one of our most beloved kits, which is why we decided to make something even better. We have upgraded the shield kit to make the bestest, easiest way to drive DC and Stepper motors. This shield will make quick work of your next robotics project! We kept the ability to drive up to 4 DC motors or 2 stepper motors, but added many improvements:
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Introducting Adafruit Crickit #MakeRobotFriend
Make your robot pal who's fun to be with using Crickit!
by lady ada
Sometimes we wonder if robotics engineers ever watch movies. If they did, they'd know that making robots into slaves always ends up in a robot rebellion. Why even go down that path? Here at Adafruit we believe in making robots our friends!
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Drone Claw
Build a flying claw with Circuit Playground and Makecode!
by Ruiz Brothers
Use a light pipe to control a 3d printed claw with a Circuit Playground Express!
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All About Stepper Motors
The Adafruit guide to choosing and using stepper motors.
by Bill Earl
Stepper motors are the motor of choice for many precision motion control applications. Stepper motors come in many different sizes and styles and electrical characteristics. This guide details what you need to know to pick the right motor for the job.
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Digital Circuits 6: An EPROM Emulator
In this guide, we design and build a ROM emulator
by Dave Astels
Building a retro micro project can be fun, but using old ultraviolet EPROMS is difficult. But, you can build a ROM emulator. In this guide, we'll walk through the design and implementation using a Metro M4, a static RAM chip, and a handful of digital logic chips.
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Pushrod Garage
Build a cardboard garage with working garage door for your tiny cars or robots!
by John Park
Using a Circuit Playground Express programmed with MakeCode, you can control a servo motor to swing open the door on your model garage! A pushrod mechanism made from a paperclip and cardboard mounting horn is the simple, yet effective method you'll use to make it all work.
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Gemma LightTouch
It takes a light touch to light up your Gemma!
by Kattni Rembor
You just got this amazing little board. Now, how about a quick little project you can do with only a few minutes of your time? Sounds great! This guide provides two different ways to interact with your Gemma using capacitive touch and the built-in LED. Quick, simple, and super fun!
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Motorized Turntable
"You spin me right round..."
by Liz Clark
Use 3D printing, a servo motor & CircuitPython to create a photography turntable. Spinning your subject will give your photos and videos extra flair.
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Double-sided PCB Milling
Custom two-sided PCBs
by Ruiz Brothers
Learn how to use the Bantam Tools desktop CNC to make custom PCBs
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Snake Charmer Box
Fun beginner's project for Circuit Playground Express
by Dano Wall
Learn how to use Circuit Playground Express and MakeCode to charm Blinka out of her box! This guide will show you how to control a servo motor and play music with your Circuit Playground Express, as well as use different inputs in MakeCode.
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Slider Crank Mechanism -- from Cardboard and Craft Sticks
Build a simple slider crank driven mechanism controlled with Circuit Playground Express
by John Park
Use cardboard to build a slider crank linkage mechanism powered by a servo motor to control a slider crank mechanism. Program the Circuit Playground Express using MakeCode to control the motion and use it to build your own machines or animatronics.
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BOSEbuild Reactive Sound
Make your BOSEbuild speaker have AMAZING reactive sound!
by Julian Kizner
The BOSEbuild speaker is amazing, I can't lie, but it doesn't have a good reactive audio mode (it has one, but it isn't good) so I attached a Circuit Playground Express inside of it and it now has much better reactive audio.
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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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Digital Circuits 5: Memories
There are 2 types of memories: those you remember and those you don't.
by Dave Astels
In this guide we'll look at digital memory. We'll look at how it evolved over time and where it might go in the future. We'll mostly focus, though, on the types of memory that we can hack with.
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Labo RC Car Action Lights
Customize your Nintendo Labo RC Car with vibration-triggered underglow
by C. Cunningham
Use Circuit Playground Express to trick out your Labo RC Car with with some sweet motion-activated lighting.
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Data Logging with Feather and CircuitPython
It's log, it's log, it's big, it's data, it's good!
by Kattni Rembor
This project uses the Feather M0 Express, the Adalogger Featherwing and the AM2320 Temperature and Humidity sensor to gather data from the sensor and save it to the SD card on the Adalogger. You'll learn how to record data, and then take that data, import it into a spreadsheet and turn it into an awesome graph!
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Circuit Playground Express: Piano in the Key of Lime
Create a full scale tone piano using CircuitPython, capacitive touch and some cute little fruits.
by Kattni Rembor
This guide will use the capacitive touch pads on the Circuit Playground Express and the capacitive properties of fruit to create a full scale tone piano. We will write the code using CircuitPython to use each of the touch pads to light up the Neopixels in a different color and play a different tone through the onboard speaker.
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Trellis Feather DSP-G1 Synthesizer
Build a 1980s-style synthesizer with DSP-G1 synth-on-a-chip, a Feather, and Trellis keypads and knobs for control!
by John Park
The DSP-G1 is a digital synthesizer chip modeled after an analog synth, that has three oscillators per voice, a +24dB filter, two ADSR envelope generators, LFO, and more, for a great, paraphonic, five-voice 80s synth sound! Control it using MIDI note messages with a Trellis or two for input, and six knobs to send MIDI CC parameters to the synth.
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Labo Piano Light FX
Customize your Nintendo Labo Piano with Circuit Playground Express!
by C. Cunningham
Use a Circuit Playground Express and an electret mic to add sound triggered lighting to your Piano Toy-Con.
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Building CircuitPython
How to build CircuitPython yourself on different platforms
by Dan Halbert
We'll show you how to set up a build environment for CircuitPython and then build it yourself. You might want to do this to keep up with the latest development version or to make a custom version for yourself.
How to Use PVA Filament
Print a D20 inside a D20 inside a dodecahedron
by Ruiz Brothers
Print supports with water soluble filament
Arduino Ethernet + SD Card
Using the Arduino to browse files on an SD card remotely
by Mike Barela
Use an Adafruit Metro 328 or Arduino Uno with the Arduino Ethernet Shield to serve up files from the Ethernet Shield SD card. An update from the tutorial posted on ladyada.net on December, 2011 with the latest Arduino IDE and libraries.
Digital Circuits 4: Sequential Circuits
Circuits that operate over time.
by Dave Astels
In this part we will explore circuits that change their state over time rather than just responding to inputs in a functional way.
Adafruit Metro M4 Express featuring ATSAMD51
Choo! Choo! ARM Cortex M4 @ 120 MHz coming thru!
by lady ada
Are you ready? Really ready? Cause here comes the fastest, most powerful Metro ever. The Adafruit Metro M4 featuring the Microchip ATSAMD51. This Metro is like a bullet train, with it's 120MHz Cortex M4 with floating point support. Your code will zig and zag and zoom, and with a bunch of extra peripherals for support, this will for sure be your favorite new chipset.