Content for NE5534

NE5534

8x8 Dot Matrix Sound Level Meter

“Previously I introduced Arduino base Sound Level Meter circuit (From hereinafter as SLM) circuits using simple LEDs. This time let’s change the visual effect with a more multifunctional 8x8 LED dot matrix display. Although the previous SLM used Adafruit …

Another Sound Level Meter Circuits

“This is the additional project for the Sound Level Meter (From hereafter as SLM) circuit making. I introduced the SLM prototype in the previous instructable as below. https://www.instructables.com/Sound-Level-Meter/ While working on the SLM prototype, I thought …

Sound Level Meter

“This is a sound level meter circuit consisting of an electret condenser Mic, pre-amplifier circuit using NE5534/TL071 and LM3915 bar/dot display driver chip. According to the sound pressure captured by Mic, this device shows sound levels with LEDs …