Vactrol Capsule

thingiverse

NOTE: After some testing, it turns out this design as printed in black PLA isn't perfectly light-proof. Other more opaque filaments (eg white) may be better - testing is ongoing. This is a simple capsule for making DIY "vactrols" - an LED paired with an light dependent resistor (LDR). The default values in this design are for a 5mm LED and a similarly sized GL5516 CdS cell LDR. This design was inspired by the vactrol capules you'll often seen in photos of Nonlinear Circuits (NLC) eurorack moduled build documentation.