The Lectric-FX STFU! (Shut the funk up!) is a simple optical noise gate project based on the DOD 230. The only change to the original circuit is a level trimmer added to the output to match up with your bypass signal to the open gate. For best results the STFU! should be placed first in your signal chain.
The dimensions of this pcb are mm 50mm x 48.5mm. This pcb is included in the ready to solder kit:
This project is by Lectric-fx.
Here is the direct link to the manual with layout and schematic: