ISO Standard Werewolf Pack #RAWR #NeoPixels #CircuitPython

The Adafruit crew likes their Wolves and Dragons, even when they are parodied by frequent Maker caitlinsdad. He has posted on Instructables a project on making a werewolf-themed backpack. What makes this extra RAWR is using an Adafruit Circuit Playground Express to drive a servo tail and blinky NeoPixels.

He writes:

The Adafruit Circuit Playground Express board has lately become my go-to board for prototyping really quickly. Using CircuitPython and the Mu Editor, I can adjust code to make things work as I go along.

Taking inspiration from the Adafruit Really Simple Animatronic Tail project, I learned that you should use a piece of aquarium air line tubing for the tail to give it that fluid tail-like motion.

The Circuit Playground Express board is also capable of playing small sound clips. I found a howling wolf .wav file I liked. There was not enough room on the board’s memory to load the sound file. I used Audacity to downsample the sound clip to a low 16khz.

iso werewolf backpack

Version 2 features being considered are a Full moon detector and water bottle holder.

Check out the full details, build, and programming over on Instructables.

Are you building projects with Circuit Playground Express and/or AdaBox 008? Let us know in the comments!


As 2022 starts, let’s take some time to share our goals for CircuitPython in 2022. Just like past years (full summary 2019, 2020, and 2021), we’d like everyone in the CircuitPython community to contribute by posting their thoughts to some public place on the Internet. Here are a few ways to post: a video on YouTub, a post on the CircuitPython forum, a blog post on your site, a series of Tweets, a Gist on GitHub. We want to hear from you. When you post, please add #CircuitPython2022 and email circuitpython2022@adafruit.com to let us know about your post so we can blog it up here.

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

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CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


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