Boss PS2 pedal modded with CV input
Description : 24 Mar, 2023
Modified Boss PS-2 with CV input
Here's a vid of it in action
Here's some details from the originator of the mod, Tom Whitwell, whose directions I followed when modding the pedal.
The Boss PS-2 is a wonderful, gnarly early digital pedal from 1987 with up to 2secs of delay and really out-of control pitch shifting. It’s like an Eventide H-910 in a stompbox. For modern Eurorack heads, I’m sure Tom Erbe wouldn’t mind me saying it’s a Makenoise Echophon in a stompbox.
This is a simple hack to add CV control over the delay time/shift amount (the Fine/Manual knob).
Theory
The Fine/Manual pot is a voltage divider, with +2v on one side, and +7v on the other. We’re going to re-route that voltage to the 3.5mm socket switch. If a plug is inserted into the socket, the voltage from the pot is replaced by the voltage from our modular.
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