Matt Gunn
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  • Atlanta, GA
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Matt Gunn's Discussions

Maintaining a certain groundspeed w/o airspeed sensor?

Started this discussion. Last reply by Matt Gunn Aug 6, 2013. 2 Replies

Im wondering how I can maintain a specific GPS groundspeed during an auto flight without the airspeed sensor. Is it possible? Or am I missing something?thanks,MattContinue

Syncing clocks. APM and Camera

Started this discussion. Last reply by Matt Gunn Jun 28, 2013. 2 Replies

Gents, Im having a bit of a problem finding the info, and I know its around here somewhere! LOL.Can someone point me to info regarding syncing the APM clock to my cameras clock, and how to merge the…Continue

Formula for determining resolution (cm/pix)?

Started this discussion. Last reply by Jason Best Apr 9. 6 Replies

Im trying to determine the resolution of my camera for mapping. Its 12.1mp, flight altitude is 320 feet.I have this chart for a 10mp camera, but is there a formula someone can share?…Continue

Let's talk Canon cameras

Started this discussion. Last reply by Phill Simpson Sep 17. 115 Replies

Id love to get an idea what people are using for their aerial mapping Canon cameras. I have the Canon S95, which usis optical image stabilization (OIS). This means the lenses are floating and move…Continue

 

Matt Gunn's Page

Latest Activity

Phill Simpson replied to Matt Gunn's discussion Let's talk Canon cameras
"Here's a photo of the adapter cord for the Flytron sLED shutter before I put shrink wrap around the diodes. The stripes on the diodes are on the left towards the connector where the Flytron sLED 2plugs in. I used 1N4585 diodes from my junk box…"
Sep 17
Phill Simpson replied to Matt Gunn's discussion Let's talk Canon cameras
"The second sLED developed the same problem as the first once it was in the air (continuous shutter triggering). It turns out that the Flytron sLED requires that the supply voltage and the PWM voltage to be about the same. The Pixhawk…"
Sep 16
Phill Simpson replied to Matt Gunn's discussion Let's talk Canon cameras
"I did finally get a response and a replacement sLED v2 shutter release from Flytron. The new one worked fine as long as I kept the shutter duration under 1/2 second."
Sep 12
Phill Simpson replied to Matt Gunn's discussion Let's talk Canon cameras
"I sent you a friend request, once you respond I can PM you my phone #. I'm in California."
Sep 8
David Locascio replied to Matt Gunn's discussion Let's talk Canon cameras
"Here's what the output side of my Pixhawk looks like. It looks like the power and ground of the rail are taken care of in port 8. Is the whole backside the "servo rail?" What's the difference between the white ports (1-6)…"
Sep 8
Phill Simpson replied to Matt Gunn's discussion Let's talk Canon cameras
"Check this out about half way down the page: http://plane.ardupilot.com/wiki/common-pixhawk-wiring-and-quick-start/ The servo positive power rail of the Pixhawk is not powered by the Pixhawk, you must supply the power with a BEC. All of the…"
Sep 8
David Locascio replied to Matt Gunn's discussion Let's talk Canon cameras
"I'm not sure I understand exactly what you would do. So you have the output (servo side) of the BEC connected to the Pixhawk RC out? And if you just have your servo connected to RC 11 how is the BEC connected to it? I'm imagining a…"
Sep 8
Phill Simpson replied to Matt Gunn's discussion Let's talk Canon cameras
"Here's what I would do: First, the Pixhawk doesn't provide 5 volts out for servos and such. You will need to provide the 5 volts required to run the shutter. I bought a 5 volt BEC and connected the output of it to an unused RC out…"
Sep 8
David Locascio replied to Matt Gunn's discussion Let's talk Canon cameras
"Hey Phil, I'm trying to trigger a NEX 5T via the Flytron SLED V2 trigger and the Pixhawk flight controller. I'm doing aerial mapping so I don't care if it doesn't stop taking pictures. The LED trigger has a simple 3 pin servo…"
Sep 8
Phill Simpson replied to Matt Gunn's discussion Let's talk Canon cameras
"Here’s an update on my quest to find a camera that works well for panoramas taken from a hexacopter. My previous attempts with a Canon SD100, SD90, and A2300 were less than successful with lots of blurred images (in the case of the S90 and…"
Aug 30
Phill Simpson replied to Matt Gunn's discussion Let's talk Canon cameras
"I did some comparisons for the Canon S100, S90, and A2300 on my hex, you can find the results here: http://diydrones.com/forum/topics/using-aux-pins-as-relays-for-chdk?id=705844%3ATopic%3A1559553&page=7#comments For those of you using the…"
Aug 2
Phill Simpson replied to Matt Gunn's discussion Let's talk Canon cameras
"Luca, Can you confirm that you are still having good results with the Canon S90? I'm having the same blurring problem that everyone else is having with my S100. The S90 was the first Powershot S model with IS so perhaps the mechanism is…"
Jul 27
Bryan Buchorn commented on Matt Gunn's blog post How to trigger a Canon camera through an RC transmitter
"Matt- Can you draw up a wiring diagram of how you made your trigger?  This looks like the most promising method, but I'm not entirely sure how you did it.  I don't want to fry any of my equipment so a schematic would be awesome!"
Jun 19
Bryan Buchorn left a comment for Matt Gunn
"Looking for a schematic of your cannon camera trigger if possible..."
Jun 18
Pierre-Olivier Paris replied to Matt Gunn's discussion Let's talk Canon cameras
"Someone have tried the gopro with the black bone mod? "
May 1
Miguel Marques replied to Matt Gunn's discussion Let's talk Canon cameras
"Hello! I`m Trying to produce some terrain mapping. I use an SX260HS with the CHDK interval script, and choose with 3sec interval on my 550 Hexacopter. Tried on auto and Tv modes, but all the photos are blurred. Can you tell me more…"
Apr 22

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About Me:
Interested in all things aviation.
Please tell us a bit about your UAV interest
Fixed wing, rotary wing, and multi-rotor.

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Matt Gunn's Blog

Mapping Mission Ride Along

Posted on May 18, 2013 at 10:00pm 68 Comments

Here's my 1st mapping test flight with a Skyhunter twin-boom pusher. Im running Arduplane 2.73. Mapping camera is a Canon s95 running an intervalometer script via chdk. Its suspended from a single axis gimbal that keeps the camera pointing down regardless of aircraft bank angle. Video shot from a GoPro 3 Black Edition.

It took 120 photos during the 10 minute…

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How to trigger a Canon camera through an RC transmitter

Posted on April 4, 2013 at 7:00am 19 Comments

 

In this video, I go over how to trigger a Canon s95 camera through an rc transmitter, without taping a servo on top to push the shutter button. Canon cameras use a firmware hack called CHDK that allows shutter control through the usb port. With a simple switch from Turnigy, we can trigger the camera from the transmitter.

Turnigy switch:…

Continue

Testing the GoPro 2

Posted on November 22, 2011 at 6:17pm 14 Comments

Ive been doing some testing with the new GoPro2 HD video camera. I bought it out of necessity after loosing my GoPro HD in flight :( But, having the HD jump ship was a blessing in disguise, because the new GP2 boasts some impressive features.

While shooting in 1080P, you can choose 3 different field of view (fov) settings: Wide at 170, medium at 127, and narrow at 90. Heres a video I made testing the different fov settings on a Skywalker foam airplane.…

Continue

Comment Wall (1 comment)

At 8:30am on June 18, 2014, Bryan Buchorn said…
Looking for a schematic of your cannon camera trigger if possible...

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