GCC trigger daughterboards (for PhobGCC / OEM), 1 pair


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As of version 2.0, PhobGCC PCBs come without trigger daughterboards. There is an official daughterboard design for PhobGCC triggers, which uses a star design for the two gold contact areas and comes as a pair that needs to be broken and trimmed apart.

This design, on the other hand, uses a very finely pitched opposite-side finger shape that minimizes the distance between the two contacts at every possible connection position. These daughterboards come in pairs that are already separated and can be soldered to wires directly, without any need to be trimmed.

The default, finer side has a pitch of 0.127 mm while the other side has a 0.254 mm pitch and solder pads for mouse click switches (optional installation). My trigger daughterboards are made with 2u thick ENIG layers, which means that the gold plating is twice as thick as by default, improving durability.

Additionally, the hole between the two solder points allows for the wires to be routed through that hole. This way, you can flip the daughterboard upside down from its default orientation without needing to solder or disconnect the wires from the mainboard. This can be useful in case the gold plating does eventually wear out, or in case of liquid spillage of some sort or accidentally scratching the gold plating while working on the controller.

I recommend using AWG 28 (outer wire diameter ~1.15 mm) stranded silicone wire for the connection between GCC mainboard and trigger daughterboards. PVC enamelled wire melts at typical soldering temperatures, which easily burns off too much of the insulation near the soldering joints and can cause shorts from twisting the wires.