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:
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