• detects an object based on ultrasound and its ping-pong reflection delay
• typically used for obstacle avoidance
• operating voltage: 3,0-5,5VDC 2mA
• operating angle: 15°
• range: 2-450cm
• resolution 0,3cm

Operation:

• apply a HIGH pulse lasting 10us and the measurement begins (trig)
• measure the duration of the HIGH pulse received in response (echo)
• distance = (duration of the echo HIGH pulse × speed of sound (m/s)) / 2
• distance (cm) = echo HIGH pulse duration / 58.2;