PCB Mounting Rail for Serge style panels.

Gate Sequencer

Hole positions for the CGS91. The ends both have two holes. It is likely the upper hole will be used for both panel mounting AND holding a PCB as the lower hole is likely to conflict with panel component placement. You may need to choose holes further along the strip to avoid panel mounted pots. Of course, two boards are required per panel, one as the upper mounting rail, and one as the lower.

Pad identification:

o1 to o10 Outputs
0V 0V/GND power rail
+VE positive voltage power rail.
+V2 unspecified voltage power rail. Use for 6V, 5V, etc.
-VE negative voltage power rail.


Before you start assembly, check the board for etching faults. Look for any shorts between tracks, or open circuits due to over etching. Take this opportunity to sand the edges of the board if needed, removing any splinters or rough edges.

Short spacers (or a couple of nuts) are needed to space the module boards off the rails so that there is space for the power wire, and so the PCB tracks on the modules are not shorted. 12mm M3 bolts are adequate with 5mm spacers is the recommended minim combination.

The end mounting bolts and spacers need to be long enough to clear your panel mounted components - 16mm bolts with 10mm spacers is the minimum recommended combination.

Wiring modules to the integral power bus. Each module on the panel is connected like this. The other ends of these wires to the rear of a module's onboard power connector. Power can now be fed to the whole panel through that board's power connector. Power connectors could be omitted from all but one PCB on the panel, although if installed, they are convenient for initial testing of the boards off-panel!

Parts list

Component Kit BOM
Hardware Kit BOM

This is a guide only. Parts needed will vary with individual constructor's needs.

Article, art & design copyright 2003 by Ken Stone