Introduction to the dropController

dropController V3

The dropController is a solenoid valve controller used for water drop photography. It can be connected to up to 6 valves and create up to 9 drops. It is one of the most advanced controllers available.

The dropController is controlled from a Windows program or an Android app. Sorry no IOS version.


Ports and Connections

1 – Arduino USB socket
2 – Camera shutter trigger port
3 – Flash trigger 1 port
4 – Flash trigger 2 port
5 – Flash trigger 3 port

Power socket and solenoid ports

  • USB Computer: Mini USB Mini-B
  • Shutter Trigger: 3.5mm stereo audio socket
  • Flash Triggers: 3.5mm stereo audio socket
  • Power In – Standard socket outer diameter (OD) 5.5mm and inner diameter (ID) 2.1mm. Center pin is vcc.
  • Valve connectors – RCA/Phono sockets



The dropController can be used with either 12v or 24v power input. Match the power supply with valves using the same voltage; 12V power with 12V valves and 24 power with 24V valves.

dropControllers and valves available from this website to buy are 24v.