and Operating Instructions for HiViz.com Kits
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instructions for other kits
These instructions are for connecting the output of
a HiViz.com breadboard trigger circuit to a flash unit using a Vivitar 283/285HV/3700 type cord like the one shown to the right. This will allow your trigger circuit to actuate the
flash directly. One end of the cord will be cut
and its wires wrapped tightly around the appropriate
ones from the trigger output cable. The solder joints
will be covered with pieces of heat shrink tubing for electrical insulation.
Before you begin, gather the parts
and tools below. You'll also need your HiViz.com trigger
circuit or delay unit for testing.
3-ft of 2-conductor cable
Vivitar 283/285HV/3700 cord
2-inch length heat shrink tubing (HST), 3/32-inch
3-inch length heat shrink tubing
(HST), 3/16-inch diameter
tools and supplies:
15- or 30-watt soldering iron and solder
Wet sponge or towel
Lighter or matches to shrink HST
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Start with the cord shown in the photo at the top of the page. Cut it in the middle. You'll be using the end that connects to your flash unit. See the photo to left. Save the other end, as you may later want to use for a PC-type cord.
Using a pair of wire strippers, carefully strip
back the cut end of the cord a distance of 1 inch.
You'll see a copper sheath surrounding an insulated wire.
(We'll call this the central wire.) Pull back the sheath and twist the wires together
as shown to the right. Then strip back the insulation
on the central wire to within about 1/8 inch from the black jacket. Be sure there are no stray wires from
the copper sheath that touch the other wire.
Next, you'll need the gray 2-conductor cable. From one end of the cable,
strip back the gray insulation about 2 inches. Then
strip back the red and black insulation about 3/4 inch.
The result is also shown to the right.
There are 2 sizes of HST, 3/32-inch diameter and
3/16-inch diameter. Cut the 3/32-inch piece into two
equal lengths of 1 inch. Then slide them over the
red and black insulation as shown to the left.
Next, twist the following pairs of wires tightly
together as shown to the right: i) black wire and
copper sheath ii) red wire and white wire.
If you're new to soldering,
see the Soldering Tips below. Then solder the splices.
Solder in a well-lit, well-ventilated, open
area. Avoid contact with all metal surfaces
on the iron.
Keep the tip of the soldering iron clean
by wiping it against a wet sponge or towel
before and after each use. A clean tip should
look shiny and silvery; any yellow or black
material on the tip will get into the solder
and may weaken your solder joint.
Once the tip of your soldering iron is clean,
touch a bit of solder to the tip just before
use. This is called tinning, and helps the
solder run more evenly.
Heat the connection to be soldered by holding
the soldering iron to it, until solder applied
at the junction between the two melts and
flows freely. This ensures the connection
and the solder are both hot enough to yield
a good solder joint. This should take no more
than 10-15 seconds. After the connection is
heated, try to get solder along the entire
length of the connection by briskly moving
the solder and iron along.
Avoid touching only the solder to the connection,
and then the soldering iron to the solder
to melt it onto the connection. The connection
will be cooler than the melted solder and
won’t form a good solder joint.
- Let new solder joints cool for several seconds
before examining them. There should be solder
all the way around the connection, forming a
rigid joint. When done, unplug your soldering
iron and let it cool.
Slip each piece of 3/32-inch HST completely
over the corresponding splice. Then, using a lighter
or a match, move the flame smoothly back and forth
along the entire length of the tubing, with the tip
of the flame just beneath it. If you hold the flame
too long in one spot or too closely to the tubing,
you will notice smoke. If this happens, lower your
flame and continue moving it back and forth. The tubing
will visibly shrink, and will be acceptably tight-fitting
after only 10-15 seconds of heating. See the results
to the left.
Slide the 3/16-inch HST over
the gray 2-conductor so that it completely covers
the two spliced wires as shown in the photos to the left. Then use
a flame as before to shrink the tubing. The result
is shown to the right.
The completed cable is shown below. Connect
the red and black wires to the output of your trigger
circuit and the plug to your flash unit. In the event that your flash unit isn't triggered through the cord, try reversing the connections of the red and black wires to your breadboard. This won't hurt your flash unit or the trigger circuit, but it will let you know if you have reversed polarity.
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