Splash Photography Rig with Arduino

Photos of items dropping into water (or other liquids) always have the potential to fascinate the dramatic splashdown, the explosion...



Photos of items dropping into water (or other liquids) always have the potential to fascinate the dramatic splashdown, the explosion of flying droplets frozen in time. They’re also increasingly seen in commercial images look in your local supermarket and there’s a high probability you’ll find an image of a strawberry, chili pepper, or banana hitting the water, captured by a high-speed flash.

Together with a photographer buddy of mine (like me, a physicist by training), I spent several long evenings trying to take great ‘”water action” photos. We had some success, but we were doing it the hard way. This photo was one among hundreds we took in a single night — the majority of them showed the cube not in the water yet, or too deep in the water.

In this project we’ll show you how to take perfect splash photos, the easy way by precisely timing the dropping of the object and the triggering of the flash, using an Arduino microcontroller board.

Getting the Moment Right

There are three elements in getting high-speed splash pictures right:

Using a flash to “freeze the action” Modern electronic flashes emit light for only a very small fraction of a second (less than 1 millisecond). If the room is otherwise dark, this will freeze the action.

Planning the shot What happens, where’s the camera, how does the lighting work, in detail?

Getting the moment right This is the real trick. Before building this project, we relied on trial and error, somewhat like:

a. Drop object

b. Do a mental count of how long it’ll take for the object to hit the surface

c. Manually release the flash

d. Pray for a “hit”

Using a flash to “freeze the action” Modern electronic flashes emit light for only a very small fraction of a second (less than 1 millisecond). If the room is otherwise dark, this will freeze the action.

Planning the shot What happens, we re’s the camera, how does the lighting work, in detail?

It’s not hard to build, but you’ll need to scrounge the parts from various sources and do some experimenting to get the rig configured right (more trial and error). Our description here is not very precise (by design) as your parts and photography needs may vary. But hopefully, it’s good enough that you get the idea and start making!

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Robokart: Splash Photography Rig with Arduino
Splash Photography Rig with Arduino
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