How to Setup Distance Based Shutter with APM 2.6, CHDK and Canon SX260 HS

This video demonstrates using the Canon SX260 HS () with CHDK and APM 2.6 to trigger the shutter based on GPS distance. For more information be sure to check out this link:
/
Here is a previous video where I explain how to setup CHDK:
Distance based shutter triggering is very helpful if you're generating orthomosaic maps from your Canon camera. Previously I had been using the CHDK intervalometer to take photos every 2 seconds. While this worked I generally found in some cases there was too much overlap while in others there wasn't enough, such as flying downwind at a faster speed. Distance based trigger will provide more consistent results.
Also, be sure to check out the tip in the video where I talk about using the Mission Planner survey tool to estimate the distance trigger (CAM_TRIGG_DIST) parameter. It's a very useful tool to come up with a good value for your flight based on camera type, altitude, speed, and overlap.
Please feel free to post any questions or comments below