Making a light-up Tree of Life with NeoPixels and CircuitPython #CircuitPython #QTPy #NeoPixel @molecularist

The Molecularist blog presents a 3D printed tree with NeoPixel lights illuminating the branches.

The brains of the operation is an Adafruit QtPy, chosen for its size, simplicity, and that I really only needed two pins. Also, because I intended to run this off of the USB jack, didn’t really need much more (the NeoPixels are powered from the GND and 5V pads underneath the QT Py – giving 5V directly from the USB).

Of course, the other special reason is that the QT Py runs CircuitPython, with which I prefer to code my projects. This also helped in the prototyping of the build.

For prototyping, I used a Circuit Playground Express, also from Adafruit. The CPX has 10 NeoPixels, so I could prototype much of the code – setting up the pixels, the animation, the logic behind it (I’ll get to that). And then all I had to do was copy the code over to the QT Py when everything was hooked up.

Read more about this build 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.

Join 35,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

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


Maker Business — Challenges in trade between China and U.S. highlighted by forced labor bill

Wearables — Zip it, zip it good

Electronics — When to opt for alkaline batteries

Python for Microcontrollers — Python on Microcontrollers Newsletter: Retrofitting old computers, Pinguin and much more! #CircuitPython @micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — BBQ Smoker, Emoji Telegraph, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — New Products 9/21/2022 Featuring Adafruit ENS160 MOX Gas Sensor – Sciosense CCS811 Upgrade – STEMMA QT / Qwiic

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.