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 ex