EA Tremolo – Free DIY Project
Here is one of the early rullywow.com projects. You can either order some PCBs from OSH Park or you can etch your own with the included single sided layout. The EA Tremolo is a classic fan favorite for DIY guitar effects builders. It is a great sounding guitar tremolo effect, from wild to mild.
The Build Doc includes both PCB etching layouts as well as a schematic and the BOM (bill of materials). Ensure your printer does not scale this etching layout (print at 100%).