Ed.: Resident hardware hacker and sound artist Michael Una chatted via phone with the creator of ThinkGeek’s $50 Bliptronic instrument. We’ve already got some early tips on how you might hack this design into custom creations, which could make the Bliptronic 5000 an ideal hardware hacker choice. (And, because it is cheap, you may be a little more adventurous with the thing.) Designer Ty Liotta also talks about prototyping, the design process, and reveals an entirely toggle-switch prototype that I wish they had actually shipped. It’s a must-read for hardware geeks. -PK

I just spoke to Ty Liotta, the head of ThinkGeek’s custom product group. They’re responsible for the playable guitar/drum kit t-shirts, and a number of other fun geeky things.

The development team started working on a grid-button synth back in April, inspired by the Monome and the Tenori-on. Their goal was to make it as low-cost as possible while retaining a sense of fun and playability. Cost was a big factor in their design process; the Thinkgeek team is well aware of the exisiting devices in the marketplace and didn’t want to directly compete with the APC or the Launchpad’s price points.

The first prototype was inspired by the grid layout but had a set of 64 switches instead of membrane buttons and LEDs:

MIDI control of analog devices from Michael Una on Vimeo.

John at HighlyLiquid has been busy this year- he’s got a new kit out and one in the works that really step up the game. You may be familiar with his previous kits, which add MIDI control to Speak & Spell, Atari 2600, or pretty much every Casio. HighlyLiquid also stocks more open-ended kits which can add MIDI control to pretty much anything- I used one in my MAKE Magazine article last year to build a drum-playing robot.

From the suggestion box at CDM, we’re taking a look at DIY party-rocking sound system technology from the birth of Hip-Hop. Ed.: Resident DIY expert and editor-at-large Michael Una returns – and the man has been known to do strange things with speakers himself.

Say you’re an up-and-coming crew with a turntable and some mics. You’ve got a gig this Friday at the middle school gym (the janitor has been bribed appropriately) and the boys on the corner have been passing out your flyers to all the lovely ladies. Everything’s set, except you heard that Kool Herc is coming to battle. Herc and his mighty sound system schooled you last go-round, so you know you need something fresh to rock the bodies proper. Your DIY solution? The 55-gallon drum sound system.

Step 1: Get yourself two steel 55-gallon barrels and two 15-inch subwoofer cones.

(Kool Herc shown for scale)

Step 2: Have one of your buddies who works at the auto shop around the corner cut a hole in the bottom of each barrel. Drill some holes to mount the speaker facing out from the bottom of the barrel.

Step 3: Face the can towards the floor and have your buddy weld some 6-inch pieces of pipe on to boost it up a bit. Hook up your dad’s hi-fi stereo amp, plug in your mixer, and turn it up as loud as it will go (10 block radius). Get those bodies movin’.

Big thanks to DJ Mister P-Body and the book Yes Yes Y’All: The Experience Music Project Oral History of Hip-Hop’s First Decade. This idea comes from a story told by Tony Tone and DJ Baron about their early experiences as an MC/DJ duo.

Ed.: Now I can add this to my regrets about school, along with not taking shop to hone my welding skills — seriously, that should be mandatory. (Yeah, like I needed that extra AP. Dumb.) But I’m curious: have any of our readers tried this? Any tips to share? Perhaps we need a DIY speaker summit to try as many amplification and transduction options as possible — complete with welding lessons, natch. -PK

I ask you: what is the foundation for rhythmic electronic music? I suggest that the humble step-sequencer is the backbone of many of today’s musical genres and memetic evolutions. To have electronic rhythm, you need to start with a clock and go from there, dividing it into fractions and multiples. Then start assigning sounds to those divisions and you’re pretty much there- techno is happening.

I’ve been working on prototyping a sequencer-synth and in doing research, I’ve come across numerous projects that tackle this idea with great enthusiasm. Because a sequencer can drive any type of electronics, projects tend to fall into two categories: audio, or visual. Additionally, I’m seeing two main drivers for the sequence itself: the nimble arduino, and the CMOS 4017 Decade counter IC. I’ll survey here some of the finished projects to give an idea of what’s possible. Come with me, won’t you, on an exploration of the world of DIY sequencers.

I received my Arduino Diecemila in the mail last week and have started to experiment with using it to synthesize audio and video. I’m not very experienced with programming microcontrollers, so I’ve been doing a lot of research to see what’s out there, and it’s greatly encouraging to see that people are taking this little kit in fun directions.

While I wasn’t able to find many “finished” projects, I did find a whole lot of ideas that deserve further exploration:

First up is a simple but effective “Arduino Theremin” from Alberto Bietti. Looks like this one uses an ultrasonic rangefinder rather than an RF field to effect pitch. The squelchy FM-like tone is a little screechy but could work well with a little bit of filtering: