Drop collisions (drop-on-drop)
We get quite a few questions asking about how to photograph drop-on-drop collisions such as those by Martin Waugh showcased on his Liquid Sculpture site and whether we have a kit for taking such photographs. We're happy to say that we've added the AstroSplash Drop Controller to our product line.
Here are some links to resources that may be helpful for setting up a drop-on-drop system.
Trevor Shannon's A Method and Apparatus for Easily Creating Liquid Splash Collisions is the most comprehensive reference we've seen for the do-it-yourselfer. Shannon describes the hardware, electronics, setup, and calibration procedures in detail.
Marcus Reugels has produce outstanding photos with his setup. See the links below.