Monotron Gets All the Mods

[Harry Axten] turned the diminutive Korg Monotron into a playable analog synthesizer, complete with a full-sized keyboard spanning two octaves and a MIDI interface.

Korg Introduced the Monotron analog mini-synthesizer back in 2010. They also dropped the schematics for the synth. Hackers wasted no time modifying and improving the Monotron. [Harry] incorporated several of these changes into his build. The Low-Frequency Oscillator (LFO) has been changed over to an envelope generator. The ribbon controller is gone, replaced with a CV/gate interface to sound notes.

The CV/gate interface, in turn, is connected to an ATMega328P which converts it to MIDI. MIDI data comes from one of two sources: A two-octave full-sized keyboard pulled from a scrapped MIDI controller or a MIDI connector at the back.

The user interface doesn’t stop with the keyboard. The low-cost pots on the original Monotron have been replaced with much higher quality parts on the front panel. The tuning pot is a 10-turn device, which allows for precision tuning. All the mods are mounted on a single board, which is connected to the original Monotron board.

The fruit of all hard work is an instrument that is a heck of a lot of fun to play. Check it out in the video below. Want more? You can read all about hacking about the Monotron’s bigger brother, the Monotribe.

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Hackaday Links: February 26, 2012

Wii Nunchuk controlled Monotron

Adding a bit of motion control to your music synthesizer turns out to be pretty easy. Here’s an example of a Wii Nunchuk used to control a Monotron. [Thanks John]

Hackers on the Moon and other space related goals

Yep apparently a non-government backed expedition to the moon is in the works. But you’ve got to walk before you can crawl and one of the first parts of the process is to launch a hackerspace-backed satellite network called the Hackerspace Global Grid. Check out this interview with one of the initiative’s founders [Hadez]. [Thanks MS3FGX]

Laser pointers and frosted glass

We were under the impression that a laser show required finely calibrated hardware. But [Jas Strong] proves us wrong by making pretty colors with laser pointers and slowly rotating glass. [Thanks Mike]

MSP430 Twitter Ticker

[Matt] built a Twitter ticker using the TI Launchpad. It works on an LED matrix or OLED display along with a Python script which handles the API.

Android floppy drive hack

[Pedro] shows us how he reads floppy disks with his Android tablet. The hardware includes a docking station to add a USB port to the tablet, as well as a hub and USB floppy drive. On the software side of things an Android port of DOSbox does the rest.