An alarm made using Arduino and a compatible ultrasonic sensor. If an object or person comes within a pre-set range, it will set an alarm as well as light up the LED.
An alarm made using Arduino and a compatible ultrasonic sensor
An alarm made using Arduino and a compatible ultrasonic sensor. If an object or person comes within a pre-set range, it will set an alarm as well as light up the LED.
An alarm made using Arduino and a compatible ultrasonic sensor