#define TRIGGER_PIN 12 // Arduino pin tied to trigger pin on the ultrasonic sensor. #define ECHO_PIN 11 // Arduino pin tied to echo pin on the ultrasonic sensor. #define MAX_DISTANCE 100 // Maximum ...
There are two common types of cheap ultrasonic distance modules listed below, which are both very similar from a hardware perspective. They both have an ultrasonic transmitter and a matching receiver, ...
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