HobbyKing.com New Products Flash Sale

How To Trigger your Canon Camera Via USB

By uploading a simple and harmless hack called CHDK (Canon Hacker's Development Kit), you can control the shutter, amongst many other things, through the usb port.

Splash

Trigger your Canon camera without a mechanical servo

For many of us Canon point-and-shoot owners, there are few options to trigger the shutter in the air. Sure, taping a servo to the top or fabricating a bracket works, but it's just not very clean. Luckily, there's a way to fire that shutter via the usb port. By uploading a simple and harmless hack called CHDK (Canon Hacker's Development Kit), you can control the shutter, amongst many other things, through the usb port. The camera needs 5 volts through the usb to know when to fire the shutter. By installing a Turnigy switch in line and feeding it 5 volts, you can accomplish this. In the below video, I explain how to create the harness. For all you FPV'ers that are getting into aerial photography and video, this is a painless way to take your shots. Note that this method only works with Canon cameras. There are many cameras out there, Canon and other brands, that have IR sensors and inputs for triggers. This tutorial is for all the other Canon cameras out there. The test subject is a Canon s95.

Link to CHDK website

Link to the Turnigy Switch

The above picture shows the pin out of the usb. There are many ways to supply 5 volts and many switch choices.

How to trigger a Canon camera with an rc transmitter. CHDK. USB. RCGroups (5 min 14 sec)

Discussion

Reply
Thread Tools
Old May 21, 2013, 05:09 PM
No Guts No Glory
kestrel2003's Avatar
Switzerland
Joined Feb 2003
1,232 Posts
Great Tip

Really a good idea! After some tinkering it works quite well. Also allows you to set intervall (like nikon sports mode) and fix shutter speed. Thanks for the idea.
kestrel2003 is offline Find More Posts by kestrel2003
Reply With Quote
Old May 21, 2013, 05:16 PM
RCGroups Editor
Matt Gunn's Avatar
United States, OH, Parma
Joined Jul 2009
5,186 Posts
anytime my friend!
Matt Gunn is online now Find More Posts by Matt Gunn
RCG Plus Member
Latest blog entry: Bill Hempel Xtreme Decathlon
Reply With Quote
Old May 21, 2013, 06:14 PM
Droner
SebastianJ's Avatar
Denmark, Capital Region of Denmark, CPH
Joined Mar 2006
2,410 Posts
CHDK trigger made from a small brushed ESC:

http://www.rcgroups.com/forums/showthread.php?t=1239899
SebastianJ is offline Find More Posts by SebastianJ
Reply With Quote
Old May 23, 2013, 11:59 AM
KC9TPL- Get Legit
BloomingtonFPV's Avatar
USA, IN, Bloomington
Joined Aug 2007
841 Posts
You can also protect the lens by extending it in flight:

CHDK on an SX230 with arduino (1 min 26 sec)


http://fpvlab.com/forums/showthread....DK-and-Arduino
BloomingtonFPV is offline Find More Posts by BloomingtonFPV
Reply With Quote
Old May 23, 2013, 12:33 PM
RCGroups Editor
Matt Gunn's Avatar
United States, OH, Parma
Joined Jul 2009
5,186 Posts
do you have the code to shut it down and retract the lens? I think it would be easier for me to do that via transmitter than choosing retract in the mission planner menu.
matt
Matt Gunn is online now Find More Posts by Matt Gunn
RCG Plus Member
Latest blog entry: Bill Hempel Xtreme Decathlon
Reply With Quote
Old May 23, 2013, 03:00 PM
KC9TPL- Get Legit
BloomingtonFPV's Avatar
USA, IN, Bloomington
Joined Aug 2007
841 Posts
It's in the fpvlab link.

-tom
BloomingtonFPV is offline Find More Posts by BloomingtonFPV
Reply With Quote
Old Aug 24, 2013, 10:11 AM
No Guts No Glory
kestrel2003's Avatar
Switzerland
Joined Feb 2003
1,232 Posts
three ixus 125 later

Three ixus 125 modified with CHDK later I can really say that this workes very well for in flight imaging.
kestrel2003 is offline Find More Posts by kestrel2003
Reply With Quote
Old Aug 24, 2013, 11:49 AM
Stuart
srnet's Avatar
UK, Cardiff
Joined Dec 2008
3,332 Posts
Other ways of doing it;

http://www.rcgroups.com/forums/showt...highlight=chdk

http://www.picaxeforum.co.uk/showthr...highlight=chdk

I have mine setup so the the left stick, normally rudder, gives me 1 shot if pushed to the left, and 3 shots pushed to the right. Flick a TX switch and a mix makes the rudder stick control the zoom.
srnet is offline Find More Posts by srnet
Reply With Quote
Old Aug 24, 2013, 12:17 PM
No Guts No Glory
kestrel2003's Avatar
Switzerland
Joined Feb 2003
1,232 Posts
Thanx looks good

my experience is that during a flight I am happy enough if the camera just takes continouse shots. Of course that also means less controll of the images taken.
kestrel2003 is offline Find More Posts by kestrel2003
Reply With Quote
Old Feb 20, 2014, 02:56 PM
Moderately Dangerous
TwoHeadsBrewing's Avatar
United States, CA, Chico
Joined Apr 2011
1,062 Posts
Is this possible without using 2 channels on the Rx? I have a BEC already powering my OSD, so could I just use that for power, and one channel for shutter activation?
TwoHeadsBrewing is offline Find More Posts by TwoHeadsBrewing
RCG Plus Member
Latest blog entry: UHF / 1.3ghz Relay Stations
Reply With Quote
Old Feb 20, 2014, 03:17 PM
RCGroups Editor
Matt Gunn's Avatar
United States, OH, Parma
Joined Jul 2009
5,186 Posts
of course. you just need to do a little soldering. I didn't cause I was lazy :P
Matt Gunn is online now Find More Posts by Matt Gunn
RCG Plus Member
Latest blog entry: Bill Hempel Xtreme Decathlon
Reply With Quote
Old Feb 20, 2014, 04:05 PM
Moderately Dangerous
TwoHeadsBrewing's Avatar
United States, CA, Chico
Joined Apr 2011
1,062 Posts
LOL, ok good! Just making sure there wasn't something I was missing about perhaps a second channel. Thanks for the video, should make aerial mapping a lot easier and cheaper using a point and shoot.
TwoHeadsBrewing is offline Find More Posts by TwoHeadsBrewing
RCG Plus Member
Latest blog entry: UHF / 1.3ghz Relay Stations
Reply With Quote
Old Feb 27, 2014, 02:08 AM
Registered User
Joined Jan 2014
469 Posts
how does the power shot compare to a go pro? I have a elph130is and looks to be supported by chdk. has a 8x optical zoom. how does it compare for image stability?
jeepnawillys is online now Find More Posts by jeepnawillys
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Triggering your Canon camera via usb w/ CHDK Matt Gunn Aerial Photography 0 Apr 04, 2013 09:41 AM
Discussion Does anyone happen to have a link to mod a Canon remote usb trigger? spacecase Aerial Photography 3 Jul 02, 2012 02:28 PM
Discussion Triggering CHDK camera via circuit? Alpina540 DIY Electronics 7 Jul 27, 2010 05:51 PM
For Sale Gentled-CHDK cable (shutter trigger for Canon USB cameras) Hellsiege Aircraft - General - Miscellaneous (FS/W) 6 Oct 20, 2009 11:40 PM