4.4:1 Metal Gearmotor 25Dx63L mm LP 6V with 48 CPR Encoder Category_Energy/Power Supplies The synth is a 15-DCO

The synth is a 15-DCO structured as 5-note paraphonic with a 24db lowpass filter with resonance

If you are looking for a low-cost solution with better range performance

General minimal wiring diagram

MPR121 Datasheet

4.4:1 Metal Gearmotor 25Dx63L mm LP 6V with 48 CPR Encoder Category_Energy/Power Supplies The synth is a 15-DCOThis gearmotor consists of a low power, 6 V brushed DC motor combined with a 4. 4: 1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 211. 2 counts per revolution of the gearbox's output shaft. The gearmotor is cylindrical, with a diameter just under 25 mm, and the D shaped output shaft is 4 mm in diameter and extends 12. 5 mm from the face plate of the gearbox. This gearmotor is also available