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 Mike Klinefelter Dec 11. 127 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

Mike Klinefelter replied to Matt Gunn's discussion Let's talk Canon cameras
"It's one of the easiest and most popular cameras to convert.  Event38 sells the filter for $60.  You can use the information from the wiki at publiclab.org to find out how to convert the S100 and they also sell filter…"
Dec 11
Phill Simpson replied to Matt Gunn's discussion Let's talk Canon cameras
"Good idea, have you seen any instructions for a DIY conversion and/or know of a service that would do the conversion at a reasonable price?"
Dec 11
Mike Klinefelter replied to Matt Gunn's discussion Let's talk Canon cameras
"Canon USA currently has the S100 refurbished for $98.99!  At this price you could buy a couple of them and convert one to IR.  Here's a…"
Dec 11
arga firmansyah replied to Matt Gunn's discussion Let's talk Canon cameras
"I am using 450 sized quad running on APM 2.6 using a cheap Canon 2300 point and shoot camera to do photogrammetry after following step by step guide on flight riot. Result is great without any blur or underexposure. I am flying on 100 m Above ground…"
Dec 8
Matthew Pitts replied to Matt Gunn's discussion Let's talk Canon cameras
"Hi There,  I have just got hold of a canon SX260 which I'm planning to use for aerial mapping with a F450 running a Pixhawk.   I'm rather worried about the weight of the camera on such a small drone, but We'll see how long…"
Nov 28
João Marques replied to Matt Gunn's discussion Let's talk Canon cameras
"Holy crap man. I really hope the a5000 pictures quality (somewhere between NEX 3 and Nex 5) can be very close to that.So the trick to manual focus is so simple! lol! Thanks man. But is possible to shoot in AUTO or the results are worst that…"
Oct 27
David Locascio replied to Matt Gunn's discussion Let's talk Canon cameras
"So, how I focus is the following: Point the camera at a far off object (such as a tree outlined by the sky). Press trigger half way down. Turn focus ring until tree is optimally focused. Take picture. Now, the intervalometer has started with a…"
Oct 27
João Marques replied to Matt Gunn's discussion Let's talk Canon cameras
"Hi David, But since i'm used to start shooting before the drone is in the air (Currently using a Canon SX260 with 3s interval between photos, 1/1000, ISO Auto, Continuous Focus) wont that Manual Photos shoot the first photo and the next ones…"
Oct 27
David Locascio replied to Matt Gunn's discussion Let's talk Canon cameras
"Joao, I've used the intervalometer app on a Sony NEX 5T. It was tricky to figure out a good setting, but I shoot RAW in manual with f/7.1-9, 1/500, and ISO 400-800 and have had great results. I simply set the manual focus for the first picture…"
Oct 27
João Marques replied to Matt Gunn's discussion Let's talk Canon cameras
"Matt Gunn how good is the intervalometer app from SONY in mapping? I'm almost buying a a5000 and start using the app but i really need to know if the results are good, if it works using AUTO mode and if every single photo are focus. (i read…"
Oct 27
AndyC replied to Matt Gunn's discussion Let's talk Canon cameras
"I've produced some very accurate models (DGPS controls GCP RMSE <17 mm) with images from a S100 at 1/1000th second Tv; The minimum usable shutter speed will depend on flying speed/altitude, but won't always have to be faster than…"
Oct 27
Glen Thomas replied to Matt Gunn's discussion Let's talk Canon cameras
"Hi guys S100 must not shoot slower then 1600...1000 is not enough but I gaurantee it at 1600 and is great for mapping because you can set the lense and remember for accurate mapping you do not want to be wider then 35mm pref 50mm"
Oct 27
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

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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…

Continue

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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