The Arduino Mini Amplifier is a complete, open-source audio amplifier system that combines vintage analog audio processing with modern embedded control. It features Bluetooth and line-in audio inputs, ...

This one caught my eye on twitter, the Arduino Audio Meter - an Arduino-based device described as spectrum analyser and guitar pedal in one... It's based on the Uno board, to be precise, fitting ...

A 74HC574 latch has been added to allow the Z80 to pass data to the Arduino, replacing the previous 1-bit pulse halt protocol. While adequate for reading keyboard input, it was too slow for reading ...

One way to address noise on analog signals is to take multiple readings and average them out, but the way that we do this depends on where the noise is originating in our system I always hoped to be ...

Everything you wanted to know (but were too afraid to ask) about using the MSGEQ7 audio spectrum analyzer chip. I’ve talked about using the MSGEQ7 Spectrum Analyzer chip in several columns over the ...