TRIPLE TWIN-T DRUMS (NLC BONGO FURY)

Original schematic, BOM and information: LINK

STRIPBOARD LAYOUT

Three of Twin-T. Each one has different value of capacitors, normally higher value you put, lower frequency you get. I ended up selecting 470nF, 100nF and 22nF, however it's worth trying different value to meet your taste. And led also changes the tone depending on its color. 

All decoupling capacitors, 100nF are soldered underneath the boards.

FACEPLATE LAYOUT

6hp faceplate layout. The dimension is 30mm x 129mm.

It's actual size so you can use it as a drilling template.

Potentiometer: 7mm

3.5mm jack: 6mm

Mounting screw: 3mm