This could be a great project for a classroom or even open-plan offices. Shared by Jeremy S. Cook on Hackster.io:
What I came up with was the “Hello Light,” named by my son to signify the fact that you say hello to it and it lights up. It uses an Arduino Nano along with an electret microphone stuffed into a wooden enclosure near the bottom of the assembly to measure ambient noise, then signals strips of RGBW lights to progressively light up depending on sounds levels. In alarm mode, if the sound level exceeds a certain threshold, it flashes blue and red to signify things are too loud.
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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.
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