2 layers42.5 × 56 mm

Bass detector
eepyminded/LTSpice-Bass-Detector
LTSpice project to light up a LED diode when bass frequencies are detected in a sound provided by a 3.5 mm jack input (here is ac voltage source)
27 parts
Open-source boards designed in KiCad by eepyminded on GitHub, from 2 repositories. A board’s address here is its repository’s there.

eepyminded/LTSpice-Bass-Detector
LTSpice project to light up a LED diode when bass frequencies are detected in a sound provided by a 3.5 mm jack input (here is ac voltage source)
