Circuit Lake

This simple sound generator is built with an Atmel ATtiny861 microcontroller as main processor and an SD memory card as storage media. The project based on 8-pin SD Audio Player. It can generate clear sound with fast PWM output from ATtiny861. This project is easy to be controlled by external signal hence it is usable as sound module for toys, tone ringers, amusement machines and gadgets.

The output of audio signal is PWM and it can drive loudspeakers directly. Although it cannot sound loud but it will create sufficient sound with high efficiency speakers on the desk. PCM Sound Generator project is designed by elm chan.

Download : Circuit and Firmware