Arduino GoPro Hero2 Control

  
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I wanted to do some time lapse photography where the camera would take 1 capture every 20 minutes or so of a race car chassis fabrication project. After looking around on the web, I decided the GoPro Hero2 would work. The GoPro has a built-in time lapse feature but it can’t handle long intervals between pics.
Arduino GoPro Hero2 Control - schematic

I learned that the camera has a one button mode that allows it to snap off a capture as soon as you turn it on. My project will take place over a period of weeks, so running it all off the internal battery of the GoPro was not an option.

The GoPro has a USB  port on the side for charging. I got a dual USB wall wart to power both the Arduino and the GoPro and will leave them plugged in, so I don’t need to worry about battery capacity. The Arduino likely would run a long time on a battery pack but I have found that the GoPro with the EyeFi SD card I will use seems to go through a fully charged battery pretty quickly. If I didn’t mind downloading the pics manually before the memory card got full, I could use a standard SD card instead of the EyeFi card and probably run the whole thing on a battery. A 32 GB SD card would hold a fair amount of 11 MP shots.

I also didn’t want to have to remove the SD card from the GoPro when it got full, so I got an Eye-Fi SD card that automatically transfers the images from the GoPro to a nearby computer that is on a wireless network.

I realized that if I could turn the camera on remotely, it would take one picture, then I could turn it off until the next time I needed a picture. With a 20 minute interval between pictures, the Arduino would be running the whole time, but the GoPro would be totally off except for when it was...




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