The Ultimate MIDI Wind Controller Is The Human Voice

October 28, 2018 by Brian Benchoff 9 Comments

When it comes to music, the human voice is the most incredible instrument. From Tuvan throat singing to sopranos belting out an aria, the human vocal tract has evolved over millions of years to be the greatest musical instrument. We haven’t quite gotten to the point where we can implant autotune in our vocal cords, but this project for the Hackaday Prize aims to be a bridge between singers and instrumentalists. It’s a hands-free instrument that relies on vocal gesture sensing to drive electronic musical instruments.

The act of speaking requires dozens of muscles, and of course no device that measures how the human vocal tract is shaped will be able to measure all of them, but the Multiwind does manage to measure breathing in, breathing out, the shape of the lower lip, the upper lip, and its own tilt, giving it far more feedback than any traditional wind instrument. It does this with IMUs and a mouthpiece mounted on a mount that is seemingly inspired by one of those hands-free harmonica neck mounts.

The output for this device is MIDI, although the team behind this build already has data streaming to an instance of Max, and once you have that, you have every musical instrument imaginable. It’s an innovative musical instrument, and something we’re really excited to see the results of.

With Grinning Keyboard And Sleek Design, This Synth Shows It All

October 28, 2018 by Donald Papp 24 Comments

Stylish! is a wearable music synthesizer that combines slick design with stylus based operation to yield a giant trucker-style belt buckle that can pump out electronic tunes. With a PCB keyboard and LED-surrounded inset speaker that resembles an eyeball over a wide grin, Stylish! certainly has a unique look to it. Other synthesizer designs may have more functions, but certainly not more style.

The unit’s stylus and PCB key interface resemble a Stylophone, but [Tim Trzepacz] has added many sound synthesis features as well as a smooth design and LED feedback, all tied together with battery power and integrated speaker and headphone outputs. It may have been originally conceived as a belt buckle, but Stylish! certainly could give conference badge designs a run for their money.

The photo shown is a render, but a prototype is underway using a milled PCB and 3D printed case. [Tim]’s Google photo gallery has some good in-progress pictures showing the prototyping process along with some testing, and his GitHub repository holds all the design files, should anyone want a closer look under the hood. Stylish! was one of the twenty finalists selected for the Musical Instrument Challenge portion of the 2018 Hackaday Prize and is therefore one of the many projects in the running for the grand prize!

Chiptunes In An Altoids Tin

October 27, 2018 by Brian Benchoff 8 Comments

For [Dejan]’s entry to the Musical Instrument Challenge in this year’s Hackaday Prize, he’s tapping into some of the great work that has been done over the years to bring bleeps and bloops to the masses. He’s building a drum machine, a bass synth, and an arpeggiator that fits in your pocket, in a handy form factor that fits in an Altoids tin. It’s the FATCAT Altoids Tin Mod Tracker.

This is a simple build meant to fit in an Altoids tin, so you’re not getting a whole lot of hardware here. There’s a battery, there’s a boost circuit, and there’s a single chip, an ATtiny84. This tiny little microcontroller is the heart of the box, able to provide a drum track with a kick, snare, and a closed and open high hat. There’s a bass with a simple square wave and portamento, and an arp track that can be used as a lead or arpeggiated chords. All of this is programmed in C and uploaded straight to the chip.

The ATtiny series of microcontrollers are fairly popular for various means and methods of creating square wave bleeps and bloops. We’ve seen them become a MIDI synth that fits inside a MIDI jack, and we’ve seen how much chiptune goodness you can fit in thirty two bytes of RAM. Cornell even had a spat of rickroll vandalism with a coin cell throwie built on an ATtiny85. Anything that puts more ATtiny chiptunes into the hands of more people is great in our books, and this Altoids tin synth is just the thing.

You can check out a demo of the FATCAT below.

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Hardware Controllers For Software Effects

October 27, 2018 by Brian Benchoff 6 Comments

There is an interesting multi-effect available for all you musicians out there. It’s the Turnado from Sugar Bytes. It’s a real-time effects unit that takes advantage of a computer’s horsepower to add reverb and ring mods to whatever audio you feed into it. There’s flanger and a phaser. If you feed a drum loop into your computer, there’s a stutter function which means you too can become a Soundcloud rapper.

Unfortunately, this multi-effect runs on a computer. That means you have to deal with the user interface of a desktop or laptop — GUIs, a mouse, and keyboard. Maybe a touch screen if you’re lucky.

We just wrapped up the Musical Instrument challenge in the Hackaday Prize, and if there’s one thing musicians like it’s a physical interface for all their weird gadgets. That’s what makes the Turnado Hardware MIDI Controller from [Liam Lacey]. It’s a hardware interface for a computer-based software tool.

On board are nine independent joysticks, more than that many encoders, a few buttons, and a display to have everything make sense. All of this is controlled by a Teensy, and it is mostly a plug-and-play solution for controlling Turnado. It’s a great project that makes a great software tool even more useful, and we’re glad to see it make the final cut for the Musical Instrument Challenge in this year’s Hackaday Prize.

Gutters To Gardens: The IoT Rain Barrel

October 26, 2018 by Brian Benchoff 14 Comments

There’s nothing quite like having a garden in your backyard. You get tomatoes with flavor. Fresh herbs are easy. If you’d like to go crazy, you can always grow a gigantic pumpkin. But there’s a problem with gardening: the work. You’ve got to water, and you’ve got to weed. You’ve also got to deal with the thousand ladybugs you bought for a laugh.

For his Hackaday Prize entry, [Kent] has solved at least one of these problems. It’s an Internet of Things rain barrel. It’s designed to be as simple as possible so that anyone can set it up in just a few hours, and there’s also an option to make this rain barrel solar powered, making it eminently sustainable.

The design of this rain barrel begins as you would expect, with a 55-gallon rain barrel collecting water from [Kent]’s gutters. At the bottom of this barrel is a bunghole, and from that, a 12-volt pump sucks up the water and dispenses it into the garden bed. Everything is controlled through a Particle Photon, one of the easiest ways to set up an Internet of Things project, and yes, you can control this entire setup with an Alexa. The future is now.

Below, you can check out a few of the demo videos [Kent] put together for his project. One of them is solenoids clicking off to Deep Purple’s Smoke on the Water because if you’re going to build an Internet of Things thing with clicky electromechanical valves, you might as well make it play music.

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Looks Like A Glove, Plays Like A Musical Instrument

October 25, 2018 by Donald Papp 8 Comments

The GePS is a musical project that shows how important integration work is when it comes to gesture controls. Creators [Cedric Spindler] and [Frederic Robinson] demonstrate how the output of a hand-mounted IMU (Inertial Measurement Unit) and magnetometer can be used to turn motion, gestures, and quick snap movements into musical output. The GePS is designed to have enough repeatability and low enough latency that feedback is practically immediate. As a result, it can be used and played like any other musical instrument that creates sound from physical movements in a predictable way. It’s not unlike a Theremin in that way, but much more configurable.

To do this, [Cedric] and [Frederic] made GePS from a CurieNano board (based on Intel’s Curie, which also has the IMU on-board) and an XBee radio for a wireless connection to software running on a computer, from which the sounds are played. The device’s sensitivity and low lag means that even small movements can be reliably captured, meaning that the kind of fluid and complex movements that hands do every day can be used as the basis for playing sounds with immediate feedback. In a very real sense, the glove-based GePS is an experimental kind of new instrument, which makes it a fascinating contender for the Musical Instrument Challenge portion of the 2018 Hackaday Prize.

This Synth Plays The Only Scale Everybody Knows

October 24, 2018 by Brian Benchoff 19 Comments

[randomprojectlab] is building a synthesizer around the pentatonic scale for the Hackaday Prize. It’s the Pentasynth, and it’s basically just a keyboard with five notes per scale.

There’s something common to every form of music. Nearly every musical tradition, from western art music, to Indonesian folk music makes use of a pentatonic scale. This is just a major scale without fourth and seventh scale degrees, or just playing the black keys on a piano. It’s the one scale everybody knows, and forms the basis of every school of thought for music education. Noodling over the pentatonic scale is what all the cool guys do in Guitar Center. It’s absolutely the foundation of all music.

The hardware for this build is an Adafruit Metro Mini, or basically an Arduino with an ATMega328. This generates three channels of audio, two square waves — one each for the keyboard and bass accompaniment — and a pseudo-random noise drum beat. The keys are 3D printed, and the enclosure is CNC’s acrylic.

Most educational music toys out there have a few additional bits to make composing music easier. The Pentasynth is no exception, with a button that adds a drum beat, a button that adds a bassline, and a switch that makes the keyboard major or minor. It’s a great idea, and you can check out a video of the Pentasynth in action below.

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