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Using an ATTiny85 as a Microphone Amplifier [Experiment]
posted October 7 2014 11:50.24 by Giorgos Lazaridis




I wonder why would anyone want to use the ATTiny85 to make an audio amplifier. The reason why Charles Lohr made this project is because he wanted to experiment with the differential PWM outputs of the chip, if they were capable to drive a loudspeaker directly without any other components in between. He connected the microphone directly to the ADC input using a pull-up resistor and.. that's all! And it did work, which is great to know after all.

Code in this link



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