This module is part of my Eurorack series. It is an envelope generator based on the 7555 timer integrated circuit. An envelope generator creates a control voltage that is usually used to shape a sound over time, e.g. in a voltage-controlled amplifier or filter. It sounds more natural than just turning a note on and off.
See https://polykit.rocks/adsr for technical details and assembly.
Disclaimer: Kits or PCBs like this require a certain experience to assemble. A set of tools and basic understanding of electronics and components are required. Please take great care while assembling it. All kits and PCBs are sold at the purchasers risk. Used or assembled kits can't be returned.
