int max_ultrasonic_distance_cm = 400; // set the maximum measureable distance for the ultrasonic sensor to 400cm NewPing sonar(ULTRASONIC_TRIGGER, ULTRASONIC_ECHO ...
This project demonstrates how to send WhatsApp notifications using an Arduino UNO R4 WiFi board with CircuitDigest Cloud's WhatsApp API. The system uses an ultrasonic sensor to detect proximity and ...