Control your camera with this Arduino intervalometer

When you need a high-quality image, it’s hard to beat the resolution and lens options of a DSLR. But what if you want to take a photo over and over at set intervals to produce a time-lapse sequence? You could purchase an intervalometer, or make one using an Arduino Nano.

The device shown in the video below uses a 2.5mm audio plug for the input to a Canon T2i camera. An opto-isolator is activated by the Nano, connecting the ground (base) and tip (shutter) pins. Intervals are set via a 4-position DIP switch, allowing photo intervals of 5, 10, 30, and 60 seconds—or any combination thereof.

– Werbung –

While the functionality shown is quite basic, the setup could be adapted for other timing patterns, or even for use with a sensor. Build instructions are available here, and you can find code and the 3D-printed base on GitHub.