AVR Oscillator v. 0.1

YouTube via rpocc | July 01, 2010

"A very raw version of voltage controlled oscillator built on single ATTiny13A powered from 3V battery and working at 1.2 MHz (default).

Osc generationg pulse wave with wavelength proportional to applied voltage («Volt/Length» response)

408-byte wavelength table and simple code is required to get V/Oct response. In case of ATTiny (10-bit ADC, 8-bit MCU) hash-table method should be faster then pure calculations.

WIP. Project goal is extremely simple and cheap VCO for Lo-fi applications."

MIDI Messages from ATTiny13A

rpocc | July 01, 2010

"Test program sending MIDI Message Active Sensing (EF) from Atmel ATTiny13A. Background music is test track created with another project: DIY 4-stage sequencing (de)multiplexer (WIP)
project archive: http://rpocc.quorum.su/diy/activesens...
http://rpocc.ru"

Update:

Looped MIDI melody from ATTiny13A to Doepfer Dark Energy

"rpocc | July 01, 2010

ATTiny13A MCU generationg MIDI stream with a fragment of traditional New Year song "Yolochka" (The christmas spruce) and controlling famous analog MIDI synth.
Source is pubbed at http://rpocc.quorum.su/diy/elochka.rar
MCU has only 1 KB of program memory, but I think, it can fit 3—4 times larger song data. Next goal — to select MIDI Data to be transmitted and generate real time messages such as Program or Control Change"