PING)))™ Ultrasonic Distance Sensor
The Parallax PING))) ultrasonic distance sensor provides precise, non-contact distance measurements from about 2 cm (0.8 inches) to 3 meters (3.3 yards). It is very easy to connect to BASIC Stamp® or
Javelin Stamp microcontrollers, requiring only one I/O pin. The PING))) sensor works by transmitting an ultrasonic (well above human hearing range) burst and providing an output pulse that corresponds to the time required for the burst echo to return to the sensor. By measuring the echo pulse width the distance to target can easily be calculated.
Features :
• Supply Voltage – 5 VDC
• Supply Current – 30 mA typ; 35 mA max
• Range – 2 cm to 3 m (0.8 in to 3.3 yrds)
• Input Trigger – positive TTL pulse, 2 uS min, 5 ?s typ.
• Echo Pulse – positive TTL pulse, 115 uS to 18.5 ms
• Echo Hold-off – 750 ?s from fall of Trigger pulse
• Burst Frequency – 40 kHz for 200 ?s
• Burst Indicator LED shows sensor activity
• Delay before next measurement – 200 ?s
• Size – 22 mm H x 46 mm W x 16 mm D (0.84 in x 1.8 in x 0.6 in)
Dimensions :
Parallax Ping
Pin Definitions
ultrasonic sensors
GND Ground (Vss)
5 V 5 VDC (Vdd)
SIG Signal (I/O pin)
The PING))) sensor has a male 3-pin header used to supply power (5 VDC), ground, and signal. The header allows the sensor to be plugged into a solderless breadboard, or to be located remotely through the use of a standard servo extender cable (Parallax part #805-00002). Standard connections are show in the diagram to the right.
Quick-Start Circuit
This circuit allows you to quickly connect your PING))) sensor to a BASIC Stamp® 2 via the Board of Education® breadboard area. The PING))) module’s GND pin connects to Vss, the 5 V pin connects to Vdd, and the SIG pin connects to I/O pin P15.
ultrasonic sensors schematic
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