(Possibly) The simplest hexaphonic synthesizer in 22 components

Enter Hexaphon

CD40106/74C14

F(hz) = 

1.2

R * C

Low-pass filter

Starve

🤔

• Buzzy output (Grounding issue?)
• Volume control (voltage divider)
• First note too high pitch
• Pitch affected by input voltage
• VCO

References

• World's easiest oscillator! Introducing the CD40106: https://www.youtube.com/watch?v=P4SwaI09Zxc
• DIY VCO Part 1: The analog oscillator core anyone can build: https://www.youtube.com/watch?v=QBatvo8bCa4