• based on ultrasound and the ping-pong echo delay to detect objects
• typically used for obstacle avoidance
• Operating voltage: 5VDC 2mA
• Operating angle: 15°
• Distance: 2-450cm
• Resolution: 0,3cm

Usage:

• input a HIGH pulse lasting 10us and the measurement starts (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;