+4dBu = 1.2V,
+16dBu = 13.8V
Arduino inputs are high impedance so the current is no issue, just for precaution use 10k resistor.
V in = headphones output, connect Vout to Line level 1uF capacitor, R1 =20k, R2=10K, and code from here.
https://create.arduino.cc/projecthub/sairushan/music-reactive-rgb-led-strip-ws1228b-a4c1c3
1 Like