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Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Actually, pics like these can be made much more simply. You need only a water container with a valve which can be set to create single drops at a modest rate. The drops fall thru a beam from a laser pointer falling on a photo cell. That is your “T=0” reference, and you only need to adjust the delay from that time until you trigger the camera. It is usually no problem to send the camera trigger signals before it is finished with the last one. You need to write no code, unless that is what turns your crank. I used a 555 timer and an adjusting pot with a knob.