Why Your Ultrasonic Distance Sensor Gives You Numbers When What You Need Is Experience

Why Your Ultrasonic Distance Sensor Gives You Numbers When What You Need Is Experience The Parking Sensor Problem You wire up the HC-SR04. You upload the library example. You open the serial monitor. Distance: 45 cm Distance: 44 cm Distance: 43 cm Distance: 42 cm Your visitor looks at the numbers. Then looks at you. Then walks away. Printing distance in centimeters is not an interactive experience. It's a science fair project. The Wrong Mental Model Most HC-SR04 tutorials start with: "Distance =