Groovesizer Alpha & Doepfer Dark Energy: random patterns

September 10, 2013 · Posted in Uncategorized 

The Groovesizer (http://groovesizer.com) with Alpha firmware is a DIY 32-step sequencer and synth. In this video, it’s controlling a Doepfer Dark Energy via MIDI. The video shows off the random pattern generation of the Groovesizer Alpha (major, minor, pentatonic, chromatic).

The Groovesizer (pronounced groove-a-sizer) is a DIY 8-bit audio platform. It’s a musical chameleon that can take on a number of different roles from sequencer to synth, drum machine, or midi controller. Exactly what the Groovesizer is at a given moment depends on the firmware it’s running. Existing firmware can be freely hacked, or new firmware developed using the beginner friendly Arduino IDE. Firmware is loaded to the board directly from the Arduino IDE, either via an AVR ISP programmer, or by flashing the Atmega chip on an Arduino board and swapping it out.

The Groovesizer is based around a custom PCB that features 6 potentiometers and  5 rows of 8 tactile switches and leds  (4 rows for the sequencer / trigger buttons and 1 row dedicated to control functions). It features an integrated Arduino clone, an 8-bit DAC option, an LM386 amp output, MIDI in/out/sync and is configurable to work with some of the most popular existing Arduino audio projects.

Furthest along in its development is the Alpha firmware which features a 3 oscillator monosynth attached to a 32-step sequencer with 112 memory locations to store patches and patterns.

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