Blog Posts

Janet Hansen made an amazing psychedelic fur coat with animated LEDs.

 

This mesmerizing coat is made with 1,000 individual addressable LEDs (picture Edna Mode using her “No Capes” voice to say “No Strips!”) and whit shaggy fur that is not only fashionable, but acts as a diffuser.  The individual LED pixels are joined together by flexible wires with spacing of about 2″.  Janet doesn’t like to use strips on flexible surfaces because as she puts it,  she prefer to never do repairs

The LEDs are controlled by a Teensy using custom hardware and software. The control switches are mounted behind the collar, and multiple battery packs are stored in pockets in the lining, in the back of the coat.

Brown Dog Gadgets has developed Crazy Circuits, an awesome circuit building system that work with Legos.

They feature several different projects including Lego based, interactive wearables, and conductive materials such as paint, thread, and clay.  Several different components are available with many of them ready to fit onto a Lego board.  They have many project tutorials published to get you going and code for the projects is published on GitHub.

 

Otemrellik made a nifty polyphonic synthesizer with a custom 3D printed case.

This portable, compact, synth includes a portable speaker and can run off 2 AA batteries or use USB for power.  It features 8 note polyphony with each note having 2 voices.  This little synth is packed with features.   Oh, and the LEDs on the buttons respond to the speed and shape of the low frequency oscillator (LFO)

Code for the project can be found on GitHub

Plans for the 3D printed case can be found on Thingverse

Lukas Truniger, Itamar Bergfreund and Bruce Yoder along with a team of artists and makers created Etheral Fleeting, a beautiful art installation at Burning Man this year.

This beautiful installation generates a series of clouds that are held in place by a machine-like sculpture, lit up with different colors, then released into the desert at the whim of the winds.

 

The code and lighting team included Sophi Kravitz, Adelle Lin, and Matt Pinner.  Each of the 4 towers had 6 strips of addressable LEDs, controlled by 2 Teensy 3.2s with Octo boards.  They also used the Megapixel Contoller board (featured on our blog back in August).  Cat5 cable connected everything to a central computer (Intel Nuc) and communicated using art-net.

Code for the project can be found on GitHub.

Forum user gi1mic has released a DIY DSP audio project for radio hams.  It takes advantage of the processing power of the Teensy and implements finite impulse response (FIR) filters that are configurable in software and default to an impressive 200 taps.

For this project a Teensy 3.2 was added to a Yaesu FT-817 transceiver and is powered from the FT817.

Some of the other features include:

• Act as multiple DSP filters based on hi pass, lo pass, band pass or band stop (filter points can be defined in Hz within the code)
• It uses voice messages to describe which filter has been selected
• It is a USB to CAT interface
• It emulates a USB sound card for receiving rig audio on a computer
• Performs Morse to voice decode and Morse to USB serial decode
• It can speak the radio config to assist the visually impaired (FT817 only)

More details about the project as well as the open source code can be found here.

Forum user NewLinuxFan designed an LED strip that is synced with MIDI song files.

The strip takes MIDI notes and translates them to assigned colors – C = Red, C#/Db = red-orange, D – orange, D#/Eb = yellow, etc.  The project uses an APA102 LED strip, however the code can be adapted to use other types of LED strips such as the ever popular neopixels (WS2811/WS2812/WS2812B).

There is a great tutorial with code provided on the Lights4Music website.

 

 

 

Bill Tubbs wrote software to map an image onto LEDs at irregular spacing.

This software solves the often heard question of how to deal with LEDs that are not perfectly aligned to a rectangular grid.  This software solves that problem.  In this project 2 Teensy 3.2s, controlled by a Raspberry Pi, are connected to and controlling strips WS 2811 LEDs.

Code of the project can be found in these GitHub repositories – Irregular LED Display Project and Display 1593.

Greg Valvo made a persistence of vision (POV) project using a inexpensive box fan and 36 DotStar LEDs (APA102).

Greg wrote the library for the POV display using Teensy 3.2 board and Adafuit DotStar LEDs (APA102).  The library is configured to support up to 48 LEDs in the string and up to 512 angular positions (~0.7 degree resolution).

Code and schematics for the project can be found on GitHub.