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Rolf | profile | all galleries >> Slave Flash Trigger Kit, Optical with PIC Controller, Ver.III tree view | thumbnails | slideshow

Slave Flash Trigger Kit, Optical with PIC Controller, Ver.III

Last Edit 9-1-09

Sorry but I am no longer selling the SFT in a kit or as a fully assembled unit.

If you are interested in obtaining the proprietary PIC code for manufacturing rights, please feel free to contact me.

Email address is shown in first picture below.

This is the ONLY slave flash trigger that works best if you use the camera's automatic setting.
You don't having to mess with the manual settings, because it knows to trigger on the last flash, no matter what camera is used or how many pre flashes it has.

The instructions, code and schematics included in this article are for personal use only. That means that you can build the unit, use it as a photographer, but you can not mass produce it. If you want to mass produce it, contact Rolf.

The Custom Software for this Slave Flash Trigger (SFT) was written by Evan Dudzik from my specifications:

1.Simple setup, ready to use seconds after turn ON, , works with all digital cameras and all flash settings, including TTL and Red-eye. Fires the slave flash exactly when the main flash occurs. Some flash settings on digital SLR's are not compatible with the Ver.II.

2. High sensitively with no chance of false triggering. The reflected (bounce flash) is sufficient in many cases to trigger the unit. This makes it more convenient to use because the opto sensor does not have to be in direct line with the camera flash.

3. This SFT is designed to be used with all flash units including commercial units with up to 400V triggers. Canon EX flashes can be accommodated on request.

4. The triggering event is indicated by a flash of the LED, shown in pictures below.

5. Long battery life, 300 hours of use or more. If not turned OFF after use , the unit will shut down after 15 minutes of inactivity. Battery life, with limited use, is around 10 months.

The circuit is similar to: http://www.fancon.cz/slave-flash-trigger/slave-flash-en.html
The case is a American Value Peppermints dispenser, 5/16" cut off from the open end.

Availability: Professional custom units with 90 day money back guaranty or complete kit. Write me for pricing.

HOW DO I KNOW IT IS GOING TO WORK WITH MY CAMERA? http://www.network54.com/Forum/259791/message/1173497423/Testing

A DIY for Ver.II construction article is here: http://www.diyphotography.net/tracker

Here is the HEX code for Ver.II : http://www.diyphotography.net/files/images/slave_flash_hex_v2.hex

NOTE:
Resistor R6, is now 20k, it has been added to improve noise immunity. When some older florescent lights and HV battery packs were close by they could causing miss-firings. It is now perfectly immune as far as I can tell. Posted below are two pictures of the finished kit.
Ver.II & Ver.III are the same except for the PIC coding.

Here is the HEX code for Ver.II: http://www.diyphotography.net/files/images/slave_flash_hex_v2.hex

HOW DO I KNOW IT IS GOING TO WORK WITH MY CAMERA? http://www.network54.com/Forum/259791/message/1173497423/Testing

A DIY construction article is here (Showing a earlier unit): http://www.diyphotography.net/very_cool_optical_slave_unit

How to get hold of me.
How to get hold of me.
Bounce flash sample.
Bounce flash sample.
Daylight triggering from 27' away! Picture taken with a Casio Exilim P&S.
Daylight triggering from 27' away! Picture taken with a Casio Exilim P&S.
Slave Flash Trigger with Vivitar cord and connector.
Slave Flash Trigger with Vivitar cord and connector.
Inside the SFT. It normally  comes with a PC connector.
Inside the SFT. It normally comes with a PC connector.
Professional Model.
Professional Model.
Mounted on a Vivitar 283
Mounted on a Vivitar 283
Sample setup. (Earlier model.) Unit has PC cord used with a hot shoe adapter,
Sample setup. (Earlier model.) Unit has PC cord used with a hot shoe adapter,
Slave Flash Circuit as of Aug. 08.  R6 is now changed to 20K.
Slave Flash Circuit as of Aug. 08. R6 is now changed to 20K.
Printed circuit board front and back, from an earlier version,
Printed circuit board front and back, from an earlier version,