Subpage: Analog synth controller using clothes pin
design 2025
Introduction:
This very simple controller changes a resistor while pinching.
In an analog synth you can connect this resistor in a voltage control path or an audio path to modulate the amount of signal. The Youtube movie demonstrates an example for that.
Needs just one (30 cent) Light Dependant Resistor (LDR), no other electronics or a supply.
You do need some ambient light for it to work because that is wat gets on the LDR increasingly when you pinch.
An alternative circuit version that generates a variable voltage at the output is also provided.
YouTube movie, demonstrating the controller
This project just shows the concept.
Mounting one or more of these controllers on a box or plate equiped with connectors creates a handy and cheap
controller module.
Some construction tips:
-To make place for the LDR inside the clothes pin, remove a bit of wood using a wood-file.
-Add a small sticky cushion to protect the LDR and block the light better when closed.
-To lower the spring force for easier pinching you could stretch the spring for a slight deformation.
R-Controller circuit/assembly diagram:
V-Controller option circuit diagram:
