When listening to music in the lab, I wanted a way to visualize what I was hearing – creating my own artificial synesthesia. This latest project is a simple sound visualizer, what sound engineers might call a volume unit (VU) meter. There are three main parts to this project: the audio sensor (mic), the microcontroller, and the LEDs. After finishing the project, I mounted the strip on the back of my new adjustable desk with some velcro. I got all of the parts from Adafruit:
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.