Arduino LFO Waveform Generator V1

Published:2013/3/10 22:18:00 Author:Ecco | Keyword: Arduino, LFO Waveform , Generator, V1 | From:SeekIC

This project uses an Arduino microprocessor and a DAC0808 8 bit parallel DAC to produce arbitrary low frequency oscillator (LFO) waveforms. These waveforms are useful for driving a tremolo/vibrato circuit in a guitar amplifier such as the Lil Tiger or a phaser effect such as the Liquidator. The second version of this project improves on this design by using a serial DAC chip and an analog speed control. The initial version of this project was build using the Arduino Diecimila development board and an Arduino prototype shield for the DAC and associated parts. The original assembly can be seen in the photographs of the Lil Tiger project. The second generation version (as shown in the schematic) was built using just the Arduino's Atmega 126 processor chip on a stand-alone circuit board. The microprocessor should be programmed on the Arduino board then moved to the standalone LFO board. The circuit is a descendent of my older waveform generator project.



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