For customers outside of the USA:Contact us to inquire about shipping by First Class to reduce shipping cost.
Sound Trigger PCB
The SK3 Sound Trigger is completely redesigned from the SK2 model. The SK3 is our answer to customer requests for a more sensitive trigger in a project box enclosure. The SK3 responds to a wider variety of sounds than the SK2 and can be actuated by a finger snap at a distance of 30 feet or more.
While dynamic and condensor microphones can be used with the SK3, the best response is obtained with the included piezoelectric sensor (shown to the right).
The kit includes all the parts for the trigger control box and the microphone cable. Soldering is required for assembly. The circuit is assembled on the PC board shown to lower right. The board is bolted to the underside of the project box cover and is connected by jumper wires to the parts mounted on the cover. The photos below show two views of the interior.
There is an on-off switch and an LED to indicate that the trigger is on.
The 3-ft microphone cable is connected to the box through a 3.5mm mono jack.
The sensitivity is adjusted with a knob on the box.
There are two outputs. The switch output is used for flash units that are triggered by a simple circuit closure (such as units designed for synching with a camera), while the pulse output is used for flash units that are triggered with a low-voltage pulse (such as some studio units).
While delay is typically adjusted by changing the distance from the microphone to the source of the sound, another method is to connect the switch output to the input of a delay unit in order to adjust the delay electronically.
If your flash unit has a PC jack, select the PC cable kit.
If your flash unit doesn't have a PC jack but can be triggered through a hot shoe adapter, select both the PC cable kit and the hot shoe adapter. The latter has a jack for the PC cable.
If your flash unit is one of the Vivitar models 283, 285HV, or 3700, select the Vivitar cable kit.
If you want to convert an RCA plug to the 3.5mm type, select the RCA to 3.5mm adapter.
Accessory for the SK3 Sound Trigger
120-240 VAC to 9VDC adapter
100-240 VAC to 9VDC Adapter
This AC/DC wall adapter provides a substitute for a 9V battery
to power many of your HiViz.com circuits. The adapter accepts 100-240V input
voltage at 50-60 Hz; output is a regulated 9 VDC.
The power rating is 10 W. The AC plug is a standard 2-pin non-polarized US plug. An adapter may be needed for some countries.