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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.
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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.
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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.
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Desktop Fume Extractor
3D Printed Carbon Filter Retainer
by Ruiz Brothers
Turn your desktop PC fan into a solder fume extractor with 3D printing.
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Cast a 3d Printed Necklace in Metal
Create a pewter pendant from a 3d printed design
by Erin St Blaine
Design and 3d print a necklace or other small part on your home 3d printer, then make a mold of it in silicone and cast it in pewter. (Or in chocolate!)
POPULAR
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.
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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The Tilt Trumpet
Make a modern, futuristic instrument!
by Isaac Wellish
Program with MakeCode to turn your Circuit Playground Express into a fun, noisy instrument. Control pitch, volume and NeoPixels just by tilting the board!
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Digital Circuits 3: Combinational Circuits
Putting logic gates together
by Dave Astels
Logic gates are fun, but they get even more interesting when you start putting them together.
FEATURED
Capacitive Touch Unicorn Horn
Make a magic costume unicorn horn that lights up with your touch
by Erin St Blaine
Make a wearable cosplay unicorn horn that glows rainbow. When you touch the pretty copper decoration swirl, the horn will glow white at the tip. Purify your environment and create magic and giggles!
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NeoPixel Manicure
Light up your jazz hands with tiny NeoPixel LEDs
by Sophy Wong
In this wearable project, we'll create a programmable LED manicure using 3D printing, NeoPixel RGB LEDs, and Trinket M0. After building the circuit, we'll attach each LED to a reusable acrylic nail, and apply them using double stick nail tape.
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LED Trampoline
NeoPixels make you wanna, Jump, Jump, Jump!
by Ruiz Brothers
Use ItsyBitsy, NeoPixel strip and a vibration sensor to make an interactive Trampoline powered by Circuit Python.
FEATURED
Sensor Plotting with Mu and CircuitPython
Plot all the things!
by Kattni Rembor
Mu is an amazing editor that works with CircuitPython and compatible boards. You can connect to the serial REPL right inside the editor. It also includes a plotter the works with your code to give you a live visual graph of your data! This guide will show you different ways to use the plotter with different sensors. It's time to plot!
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CircuitPython Essentials
The next step in learning CircuitPython.
by Kattni Rembor
You've already gotten started with CircuitPython. What's next? CircuitPython Essentials! This guide provides examples all of the core modules and some of the common libraries found in CircuitPython and how they're used. You'll be able to use any board designed for CircuitPython and learn about the different concepts included in the language. It's time to take the next step!
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Cosplay Glow Fur Raver Bandolier
Accent your burner costume with NeoPixels
by Erin St Blaine
Create a furry, glowy bandolier that can be worn dozens of ways: make leg wraps, arm wraps, a hat band or head dress, a chest harness, a belt or whatever else you can dream up. Great beginner project.
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Digital Circuits 2: Some Tools
Tools for working with digital circuits.
by Dave Astels
This guide presents several handy tools for our further exploration of digital circuits.
POPULAR
All About Arduino Libraries
How to install and use Arduino Libraries
by Bill Earl
This guide takes you step-by-step through the process of installing Arduino libraries on Windows, Mac OSX and Linux platforms.
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Adafruit AS7262 6-channel Visible Light Sensor
detect all the colors of the rainbow (except indigo)
by Dean Miller
A 6-channel visible light sensor breakout board that detects red, orange, yellow, green, blue, violet. All in one little I2C controlled package!
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Perfect Pitch Machine
Program a Circuit Playground Express to teach yourself perfect pitch!
by Isaac Wellish
Use CircuitPython, NeoPixels, a speaker, buttons, and 3D printing to make a digital pitch pipe on a Circuit Playground Express.
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Webcam Cover-Up Lego brick with Adabot Mini Fig
Protect and decorate your webcam with a lego compatible cover!
by Ruiz Brothers
Protect and decorate your webcam with a lego compatible cover! Look, we're not saying anyone's watching you. They completely block the camera while providing a fun way to customize your computer with Lego bricks or even an Adabot mini fig!
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Experimenting with Conductive Heater Fabric
Great for hyper color effects!
by Sophy Wong
This non-woven fabric is highly conductive, but with a resistance of 20 ohms/square inch, will heat up when current is applied. Let's look at a few ways to connect to it, how to power it, and what you can do with it!
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Spy Theme Playback Device
Spy themes are just cool. Code songs in MakeCode or CircuitPython so you can have one at the ready at all times!
by John Park
Learn to transcribe songs into MakeCode or CircuitPython using procedures for song passages and phrases. Play them back over a piezo speaker for a retro hip personal spy theme at any time!
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Digital Circuits 1: Binary, Boolean, and Logic
Binary numbers, Boolean logic, and logic gates.
by Dave Astels
We look at several number systems that are relevant to digital circuits. We then turn our attention to Boolean logic, before finishing with an introduction to digital logic and basic logic gates.
USB Foot Switch Controller in Circuit Python
3D printed foot switch USB controller
by Ruiz Brothers
Use a Trinket M0 and Circuit Python to make a USB controller.
AdaBox 007
Explore and use the contents of your AdaBox 007
by Tyler Cooper
This AdaBox is super sneaky with a Secret + Spy + Security theme. Everything in this box will teach you stuff they don't want you to know! You'll use your brains and hands to solve puzzles, send secret messages, bypass locks, and listen in on radio waves around you.
POPULAR
RGB LED Strips
Glowy goodness!
by lady ada
We love some good LED blinking as much as the next person but after years of LED-soldering we need something cooler to get us excited. Sure there are RGB LEDs and those are fun too but what comes after that? Well, we have the answer: LED Strips! These are flexible circuit boards with full color LEDs soldered on. They take a lot of LED-wiring-drudgery out of decorating a room, car, bicycle, costume, etc. Here is a quick tutorial on how to get an LED strip working with an Arduino.
Ever-Burning Flame Painting
Illuminate your artwork from the inside
by Erin St Blaine
Neopixel strips and acrylic paint create the illusion of a roaring fire you can hang on your wall. A capacitive touch button makes the flames burn high or die down. Powered by Circuit Playground and the FastLED arduino library.
Con Badge with Circuit Playground Express
Shine bright at your next convention or maker event!
by Sophy Wong
This project is directly inspired by the amazing unofficial con badges made for the DEF CON Hacking Conference. Make your own flashy badge with a laser cut back plate and Circuit Playground Express!
Circuit Playground Express TV Zapper
*pew* *pew* Take out TVs with your Circuit Playground!
by lady ada
Pew Pew! Televisions are toast when you build this project, a universal TV zapper made with just your Circuit Playground Express. This sneaky gadget can turn off (or on!) just about any TV. Perfect for pranks!
3d Printed Flower Lamp Shade
Create a beautiful pendant lamp in Fusion360
by Erin St Blaine
Model an Angel's Trumpet-inspired flower lamp shade in Fusion360 and 3d print it to create a beautiful hanging pendant light.
Hidden Ink UV Message Reader
Build an ultraviolet secret message decoder
by John Park
Hold a capacitive touch pad on the Gemma M0 to light up a UV LED and read an invisible message! Code it in MakeCode!
Gemma M0 Vibration Sensor Motion Alarm
Nobody better touch your stuff when you've got it protected with a vibration switch and Gemma M0
by John Park
Use CircuitPython to program the Gemma M0 to sound an alarm any time the vibration switch is triggered! Adjust the sensitivity in software for any scenario!
Automatic Dice Roller
Make a motorized dice roller!
by Ruiz Brothers
Use a DC motor and bearing and 3D printing to create an electronic dice roller.
FEATURED
CircuitPython Media Dial
Build a Circuit Python powered Media Dial!
by Ruiz Brothers
It rotates like a knob & clicks like a mouse! It works well as an assignable USB controller that you can program to do just about anything you want.
Getting to know the 555
Everything you need to know to use 555 timer chip.
by Dave Astels
The 555 is one of the most popular and flexible chips ever made. This guide will show you its inner workings and how to make use of it.
Annoy-O-Matic Sound Prank Device
Hide this noisemaker and wait for your victims to go bonkers!
by John Park
Using a Gemma M0, this sound prank device will play highly distracting sounds every 30 minutes (or however long you decide) including ringtones, cricket chirps, beeps, doorbells, and high pitched sounds only teenagers can hear!