ADVANCED OPERATIONS

INSTRUCTIONS FOR BUILDING A GPI TRIGGER

121

INSTRUCTIONS FOR BUILDING A GPI TRIGGER

This section contains a diagram of the GPI Trigger Button you can build and all associated instruc- tions.

Required Tools Soldering Iron and Solder

and Parts Wire Cutters

Electric Drill

Parts Required

A “normally open momentary push-button switch” (A).

One four-inch piece of 3/4-inch PVC pipe (C) and two end caps (B and E).

3-conductor, 22-24 gauge stranded wire cable (D). A stereo 3.5-mm mini-pin plug (F)

Instructions 1 Drill a 1/4-inch hole in the center of one PVC end cap (E) and a hole to match the push-button switch in the other end cap (B).

2Feed one end of the cable through the end cap with the 1/4-inch hole (E) and strip the end of each wire.

3Tie a single knot (D) about 8 inches from the end of the wire.

4Slide the wire through the PVC pipe, the nut and washer, and the other end cap (B).

5Solder the two wires at the knotted end to the two poles on the switch (A).

6Slip the switch into the end cap and secure it using the nut and washer.

7Solder the other ends of the cable to the plug (F).

8Connect to the tip (G) and the base (H) of the plug. Don’t connect anything to the middle sec- tion of the plug.

Base

Tip

Middle Section

9Push the end caps in place.

10After you’ve tested the unit, you can cement the end caps (A and E) into place, if you want.

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FOCUS Enhancements MX-4DV manual Instructions for Building a GPI Trigger, 121, Parts Required