This fully-featured UDA1334A I2S Stereo DAC breakout is a perfect match for any I2S-output audio interface. It's affordable but sounds great!

Create a holiday soundboard that can play any of 32 festive clips at the press of a button. Uses the NeoTrellis M4 board and is a good introduction to programming with CircuitPython.

Turn a tracing of your hand into a robotic turkey for Thanksgiving. This simple robotics project adapts an old project to use a servo motor powered by Adafruit CRICKIT for Circuit Playground Express controlled by CircuitPython.

Most low cost soil sensors are resistive style, where there's two prongs and the sensor measures the conductivity between the two. These work OK at first, but eventually start to oxidize because of the exposed metal. Even if they're gold plated! The resistivity measurement goes up and up, so you constantly have to re-calibrate your code. Also, resistive measurements don't always work in loose soil. This design is superior with a capacitive measurement. Capacitive measurements use only one probe, don't have any exposed metal, and don't introduce any DC currents into your plants.

This project demonstrates how to create a soundboard that incorporates any 32 audio clips you want. The NeoTrellis M4 handles the audio processing, with CircuitPython as the code of choice.

So you've got a cool/witty name for your band, a Soundcloud account, a 3D-printed Daft Punk helmet... so what could be missing from your road to stardom? The NeoTrellis M4, of course!

Create a Halloween mask that turns the eye of the Great Seal, which appears on American currency, into a third eye that looks around, blinks, and responds to light. Uses HalloWing and CircuitPython to run the interactive eye animation.

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.

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.

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.

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.

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.

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.

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!

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.