Circuit Playground Express Detects Loud Noise and Starts Race

Using a simple MakeCode program, a Circuit Playground Express, a servo motor, alligator clips, Hot Wheels track and car, craft sticks, glue, and sticky tack stuff, I prototyped a race gate that will raise when the CPX detects a loud sound.
Much of this equipment comes to me and my schools thanks to The Beauty and Joy of Computing middle school pilot project.
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