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Re: [Paparazzi-devel] Regulate Voltage for Camera Capture

From: Prof. Dr.-Ing. Heinrich Warmers
Subject: Re: [Paparazzi-devel] Regulate Voltage for Camera Capture
Date: Sun, 23 Nov 2014 10:17:23 +0100
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.4) Gecko/20030619 Netscape/7.1 (ax)

Hi Kris,
what for a photo  camera do you want use?
One way to take photos is to use  RC-servo  switch with relays contacts.
The you configure it as servo in the airframe file.
Same cameras use 2 inputs to take photos first  focus second shutter.
You can find a lot of  small circuits with AVR  micro controllers   and programs to realize a interface  from servo signals.
Please note that by the use of contacts , opto couplers or open collector  you are on the save side. You may destroy  the inputs
of the camera if you send a 5V signal to a 1,8V or 3.3V input of the camera.


Felix Ruess schrieb:
As Christophe pointed out, you should take a look at the digital_cam module.
Load the module and define the gpios you want to use, e.g. as in conf/airframes/examples/funjet_cam.xml

On Fri, Nov 21, 2014 at 11:13 AM, Kristofer Von Ahnen <address@hidden> wrote:
Just looking to take photos through a hardware signal sync using the cam pins. Is there anything in the code that needs to be modified for our application after wiring a connection from CAM to our camera apparatus?


On 11/21/2014 02:36 AM, Christophe De Wagter wrote:
do you want to pan-tilt the camera  (pan-tilt module)
or do you want to take photos (digital_cam_xxx  with either an IO pin, a servo, uart, i2c ... etc )


On Thu, Nov 20, 2014 at 6:22 PM, Kristofer Von Ahnen <address@hidden> wrote:
Currently looking into how to send a signal from the TWOG board to a camera via a wired connection. We have come across a pan-tilt camera example in an older version of Paparazzi, but are having difficulties figuring out where the signal originates in the code and how it can be controlled (if it can be). Does anyone know of any documents online regarding how to send this type of signal from the TWOG board, or are there any posted projects online related to this?


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