Run/Stop Cables from Wireless Follow Focus to nanoFlash at DVinfo.net

Andrew Stone · August 15th, 2011, 10:53 AM

Question for the Convergent Design people,

Some background first. A few of us have been attempting to figure out a way to get a run/stop (start/stop) cable going to trigger a Sony F3 from a wireless device; either a Preston or a Bartech. Someone brought up the idea of developing a start/stop cable that could be used with either a Bartech or Preston that would trigger the nanoflash and simply not use the internal recorder on the Sony F3.

Has Convergent Design had a request yet to fashion start/stop cables for the aforementioned devices?

Some links that may be useful during the discussion on the matter...

http://bartechengineering.com/

fSTOP Wireless BarTech Digital Receiver (BDR) - PLC Electronic Solutions Ltd. Store

Preston Cinema Systems

-Andrew

Dan Keaton · August 15th, 2011, 03:11 PM

Dear Andrew,

The nanoFlash has a special Trigger Mode, "Record Level", which greatly simplifies the interface to a wrieless remote controller.

In this mode, as long as the contacts are closed, such as when a relay is used, or when a switch is closed, the nanoFlash will record.

I do not have the schematics for the controllers, but I believe that they can offer a solution.

Andrew Stone · August 15th, 2011, 05:06 PM

Thank you for the reply Dan.

I have attached a screencapture of the pin assignments on the HIROSE connector. Pin # 4 is the Record Start/Stop line. This would be combined with the ground?

Dan Keaton · August 15th, 2011, 05:15 PM

Dear Andrew,

Yes, Pin 4 to Ground, either Pin 7 or Pin 8 will activate our Start/Stop circuit.

If you are in Trigger|Remote or Trigger Remote and Record, then

1. Press Once to Record
2. Press and Hold for 1 second or so, then Release to Stop Recording.

If you are in Trigger|Remote Level

1. Maintain Contact, Pin 4 to Pin 7 or 8 to Record
2. Open the circuit to stop recording.

Charles Papert · August 16th, 2011, 07:23 PM

FYI Andrew, I believe both the Preston and Bartech can trigger momentary and continuous closure as different film cameras require one or the other, so this should not be a problem. A call to either should return info on which pins from their units will deliver which type of trigger.

August 15th, 2011, 10:53 AM	#1
Andrew Stone Major Player Join Date: Sep 2008 Location: Vancouver, Canada Posts: 975	Run/Stop Cables from Wireless Follow Focus to nanoFlash Question for the Convergent Design people, Some background first. A few of us have been attempting to figure out a way to get a run/stop (start/stop) cable going to trigger a Sony F3 from a wireless device; either a Preston or a Bartech. Someone brought up the idea of developing a start/stop cable that could be used with either a Bartech or Preston that would trigger the nanoflash and simply not use the internal recorder on the Sony F3. Has Convergent Design had a request yet to fashion start/stop cables for the aforementioned devices? Some links that may be useful during the discussion on the matter... http://bartechengineering.com/ fSTOP Wireless BarTech Digital Receiver (BDR) - PLC Electronic Solutions Ltd. Store Preston Cinema Systems -Andrew

August 15th, 2011, 03:11 PM	#2
Dan Keaton Inner Circle Join Date: Dec 2002 Location: Augusta Georgia Posts: 5,421	Re: Run/Stop Cables from Wireless Follow Focus to nanoFlash Dear Andrew, The nanoFlash has a special Trigger Mode, "Record Level", which greatly simplifies the interface to a wrieless remote controller. In this mode, as long as the contacts are closed, such as when a relay is used, or when a switch is closed, the nanoFlash will record. I do not have the schematics for the controllers, but I believe that they can offer a solution. __________________ Dan Keaton Augusta Georgia

August 15th, 2011, 05:06 PM	#3
Andrew Stone Major Player Join Date: Sep 2008 Location: Vancouver, Canada Posts: 975	Re: Run/Stop Cables from Wireless Follow Focus to nanoFlash Thank you for the reply Dan. I have attached a screencapture of the pin assignments on the HIROSE connector. Pin # 4 is the Record Start/Stop line. This would be combined with the ground? Attached Thumbnails

August 15th, 2011, 05:15 PM	#4
Dan Keaton Inner Circle Join Date: Dec 2002 Location: Augusta Georgia Posts: 5,421	Re: Run/Stop Cables from Wireless Follow Focus to nanoFlash Dear Andrew, Yes, Pin 4 to Ground, either Pin 7 or Pin 8 will activate our Start/Stop circuit. If you are in Trigger\|Remote or Trigger Remote and Record, then 1. Press Once to Record 2. Press and Hold for 1 second or so, then Release to Stop Recording. If you are in Trigger\|Remote Level 1. Maintain Contact, Pin 4 to Pin 7 or 8 to Record 2. Open the circuit to stop recording. __________________ Dan Keaton Augusta Georgia

August 16th, 2011, 07:23 PM	#5
Charles Papert Wrangler Join Date: Jan 2002 Location: Los Angeles, CA Posts: 6,810	Re: Run/Stop Cables from Wireless Follow Focus to nanoFlash FYI Andrew, I believe both the Preston and Bartech can trigger momentary and continuous closure as different film cameras require one or the other, so this should not be a problem. A call to either should return info on which pins from their units will deliver which type of trigger. __________________ Charles Papert www.charlespapert.com