I finished the next part of another project: water drops photography.
There are a lot of amazing photos about this theme. I decided to try this self. I started with a simple equipment. First with an injection set, a flash light and a lot of time! The result was great! The next step was to buy a light barrier to trigger the camera and a solenoid valve to produce the water drops. The solenoid valve is already controled by the Raspberry Pi.
Now, I removed the light barrier and trigger the camera with the Raspberry Pi too.
This is the current state.