As I descend into dark waters, my blue flashlights reveal a spectacular display of fluorescent colors shining out from some of the corals and marine creatures below. Normally hard to detect with the naked eye, this secret, colorful light show gleams as brightly as an ’80s disco within the beam of my lights.
Fluorescence on the reef occurs as shorter wavelength blue light is absorbed by special proteins in tissues and is reemitted as longer wavelength greens, reds, oranges and yellows. While the ocean naturally filters light, leaving the underwater world cast predominantly in blue below 15 meters or so, the addition of concentrated blue light from the flashlights and flashguns attached to my camera rig stimulates the strongest response from the fluorescing proteins. Yellow filters on my lenses and dive mask block the stimulating blue light, enabling me to see and capture the full extent of the psychedelic spectacle.
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, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, 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.
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Python for Microcontrollers — The Top Programming Languages 2019 – Python tops the charts with a CircuitPython nod! #Python #Adafruit #CircuitPython #PythonHardware @circuitpython @micropython @ThePSF @Adafruit