The instructable proposed here enables to make high speed photography outside (and enjoy the sun!), in less than 2 hours with some generic DIY basic tools.
The principle is the following :
- A marble is dropped in a repeatable way.
- During its fall, it gets in front of a distance sensor that sends a signal to an Arduino card.
- After a tuned delay, Arduino triggers a servomotor rotation that pushes the camera button (as we would do with a finger).
Step 1: Equipment
Step 2: Make a Repeatable Drop System
In order to reach a sufficient height from which to drop the marble, I piled up stuff and mounted the path on it. Be sure it is sufficiently stable to remain static from one drop to another.
Step 3: Make the Falling Marble Detection System
Step 4: Dispose and Set the Camera
Focus manually on the bowl.
Step 5: Make the Camera Triggering System
Download the HighSpeedOutdoorPhoto.ino file and link the sensor and the servomotor to the Arduino card according to the instructions. Upload the HighSpeedOutdoorPhoto.ino file to the Arduino card.
Check that the marble fall correctly triggers the camera; be sure that the servomotor gets back in the same position after triggering and that the camera does not move during the operation.
Step 6: Tune the Delay
PS : Thanks to the Deroubaix family for their warm welcome !