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.
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)
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.
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).
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.
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).
The Death By Audio Arcade group took a vintage, non-functioning pinball table and turned it into a working game in tribute to the band A Place to Bury Strangers.
This impressive table features a small video screen that plays video of the band, blacklights, a glow-in-the-dark ball, and a VFD score display. There’s even a fog machine and brightly flashing strobe lights to truly show off the table’s rock and roll lifestyle.
The build required extensive retrofitting – gutting most of the mechanical relays, replacing the coils and other parts, and designing new PCBs to add microcontrollers. They ended up using 4 controllers – 2 Teensys and 2 Arduino boards, as well as a Raspberry Pi.