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
Printed circuit boards designed in KiCad and published on GitHub, each with its parts, layers and size, its README and its files; open any of them in PCBKit.

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)
