Shutter Synchronization with PPS Signal

Precis-BX316 GNSS RTK Board (GPS L1L2/GLONASS G1G2/BEIDOU B1B2 with Heading) supports PPS output, which is useful in shutter synchronization. More details, click here

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Comment by Waladi on February 7, 2017 at 4:43pm

Great... 

Do you have any guide on how to integrate and shutter command with Pixhawk ?

And step-by-step process to geotag the images using results from PPS ?

Thanks.

Comment by Roman on February 11, 2017 at 8:32am

with Event Mark no works?

Comment by ChrisAT on February 13, 2017 at 1:49am

Unfortunately you are just able to trigger the camera. The problem is, if your camera needs to focus there will be a delay between the trigger signal and the capture. I personally prefer using the feedback signal (flash signal) for logging. In my opinion this is the most accuarte method for synchronisation.

@Waladi

U can use a relay pin to trigger your camera. i used opto electronics in between to sepperate the curcits. I dont know which camera u are using? But u find some information on the web. Here is some infomration about relay pin configuration and trggering a canon power shot camera www.tuffwing.com. DSLR Cameras normally have trigger pins, so you dont have to hack the firmaware of your camera.

I also recommend to use some opto electronics inbetween to seperate the curcits.

Greetings, Chris

Comment by Tersus GNSS on February 15, 2017 at 11:15pm

@Waladi
Generally, PPS signal is not used to trigger a camera. The general solution is to enable the synchronization between the shutter to the flash. When the camera is taking a photo, a pulse is sent to the receiver through the PC (Prontor-Compur connection) port. port. The exact time when the photo is taken will be saved for post-processing.

Comment by Nick Zhu on May 19, 2017 at 7:59pm

@Roman Even Mark function is also there on board.

Comment by Roman on May 21, 2017 at 9:12am

Interesting to see examples of the kinematics for the board. For example with a track for the movement of the robotic total station or move circle on the carousel.

Comment by Nick Zhu on May 21, 2017 at 6:24pm

@Roman Hi Roman, do you mean a demo of real time kinematics of GNSS board? Please check if this video shows what you would like to see.

Comment by Roman on May 21, 2017 at 10:50pm

Hi Nik.

I was thinking about comparing two tracks, GNSS and robotik total station:

Comment by Nick Zhu on May 22, 2017 at 12:36am

Hi Roman, I woulod be very interested in your result if you will do a test, although the accuracy of RTK has been tested in many ways.

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