Vactrol based LFO Low Pass Filter - DIY Synth 40106 Chip

Learn how to make a low frequency oscillator using a 40106 chip and a vactrol. You’ll also utilize op-amps as a buffer. The op-amp used here is a TL072. The circuit is powered by a 12V DC household power supply. See my other build vids for how to make the power supply, oscillator, sync, and basic low pass filter. You can try different LEDs, the blue works well but white may work better. You can also try using different capacitors on the low pass filter to see what works best for you. Schematic and more: