Lazy Frog: A digitally-controlled optical tremolo

[fontikos]

Hi all,

New member here and I would like to share with you a new circuit I designed. It is a tremolo that is controlled by a small 8-pin microcontroller (ATTiny85).

It is inspired by a 555 optical tremolo that was posted in this forum. I just thought that a microcontroller would be able to give more peculiar light patterns.

The interesting thing with this design is that you can define pretty much whatever tremolo pattern you can imagine. I am using a pot to define unusual 8-beat/8-bit patterns like, for example, 10110010. It is also very friendly to mods, as you can just reprogram the ATTiny85 and experiment.

More information: http://eis.bristol.ac.uk/~xf14883/index.html?lazyfrog
Schematic: https://raw.githubusercontent.com/fontikos/LazyFrog/master/LazyFrog.png
Source code for the MCU: https://github.com/fontikos/LazyFrog/blob/master/LazyFrog.ino

I am sorry that I don't have any samples, but it sounds very clean and smooth.

Comments are very welcome.

[PRR]

> unusual 8-beat/8-bit patterns

Interesting.