Dodecahedron Speaker With Sound Reactive LEDs

Make these fun sound reactive speakers with Arduino. via instructables

My name is Charlie Schlager. I am 15 years old, attending the Fessenden School in Massachusetts. This speaker is a very fun build for any DIYer looking for a cool project. I built this speaker primarily in the Fessenden innovation lab located on our campus… This speaker can hung from the ceiling so to keep the tables clear. This speaker is built off of two other projects; A Dodecahedron Speaker for Desktop Printers and Sputnik 17 – 4 inch speakers. The two creators of these projects deserve partial credit for my version. This speaker took about 16 hours in total to build and wire. It is a great project to complete over the course of a week.

Ok so now for the instructions, I’m going to start of by listing the materials and tools required for this build. A laser cutter is very helpful for this project in cutting each face, but it is possible to cut the parts with a jigsaw. This build in total cost about $550, but can be made for much less if you buy cheaper speakers. I chose to buy expensive speakers to maximize the crisp sound this speaker delivers, but any 4″ speaker would work, you may have to adjust the amplifier as well to fit the power needs of the speakers.

Also, I would like to add that this is my second version of the speaker, the first version was 3d printed and wired with 3″ speakers that costs $2.00, so the sound quality wasn’t great, but the speaker worked and looked amazing. I also installed LED’s to that speaker.

Materials List:
• (12) Speakers $299.94
• (3) 12″ by 24″ sheets of Acrylic (Any Hardware Store)
• (36) 1/4″ by 1″ Bolts (Any Hardware Store)
• (36) 1/4″ Nuts (Any Hardware Store)
• (1) LED Strip $15.99
• (1) Arduino Uno $12.99
• (1) Sound Impact Sensor $12.95
• (1) Solid Core Wire $7.95**Speaker Wire is Better, I just didn’t have any in the shop**
• (1) Amplifier with Built in Bluetooth $99.90
• (1) Acrylic Cement $8.61

Tools List:
• Laser Cutter **If one is not available you can use a jigsaw or try to find a company to cut you the parts**
• Soldering Iron
• Drill
• Screwdriver
• Wire Stripers/Cutters

Full tutorial


Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here: adafruit.com/editorialstandards

Join Adafruit on Mastodon

Adafruit is on Mastodon, join in! adafruit.com/mastodon

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.

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!

Join over 36,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

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


Maker Business — “Packaging” chips in the US

Wearables — Enclosures help fight body humidity in costumes

Electronics — Transformers: More than meets the eye!

Python for Microcontrollers — Python on Microcontrollers Newsletter: Silicon Labs introduces CircuitPython support, and more! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Guardian Robot, Weather-wise Umbrella Stand, 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! — #NewProds 7/19/23 Feat. Adafruit Matrix Portal S3 CircuitPython Powered Internet Display!

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.