Parallax PING))) 28015 - User Manual

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Copyright © Parallax Inc. PING))) Ultrasonic Distance Sensor (#28015) v2.0 2/4/2013 Page 1 of 9
PING))) Ultrasonic Distance Sensor (#28015)
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 microcontrollers such
as the BASIC Stamp
®
, Propeller chip, or Arduino, 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

Range: 2 cm to 3 m (0.8 in to 3.3 yd)
 Burst indicator LED shows sensor
activity
 Bidirectional TTL pulse interface on a
single I/O pin can communicate with 5 V
TTL or 3.3 V CMOS microcontrollers
 Input trigger: positive TTL pulse, 2 µs
min, 5 µs typ.
 Echo pulse: positive TTL pulse, 115 µs
minimum to 18.5 ms maximum.
 RoHS Compliant
Key Specifications

Supply voltage: +5 VDC
 Supply current: 30 mA typ; 35 mA max
 Communication: Positive TTL pulse
 Package: 3-pin SIP, 0.1” spacing
(ground, power, signal)
 Operating temperature: 0 – 70° C.
 Size: 22 mm H x 46 mm W x 16 mm D
(0.84 in x 1.8 in x 0.6 in)
 Weight: 9 g (0.32 oz)
Pin Definitions
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
ground, power (+5 VDC) and signal. The header may be plugged
into a directly into solderless breadboard, or into a standard 3-
wire extension cable (Parallax part #800-00120).

Summary

Product Overview and Specifications

Features

Lists key characteristics of the PING))) sensor, including range and LED indicator.

Key Specifications

Details technical parameters like supply voltage, current, communication, and physical dimensions.

Pin Definitions

Explains the function of each pin (GND, 5V, SIG) on the sensor.

Technical Details and Operation

Dimensions

Provides detailed physical measurements of the PING))) sensor.

Communication Protocol and Timing

Describes how the sensor communicates and its pulse timing parameters.

Usage Considerations

Object Positioning and Material

Guides on optimal object placement and material properties for accurate measurements.

Air Temperature Effects

Explains how ambient temperature influences sound speed and sensor readings.

Test Data and Examples

Test 1: Cylinder Target Data

Shows the sensor's beam pattern and performance with a cylindrical object.

Test 2: Cardboard Target Data

Presents test results for a flat cardboard target, illustrating its beam pattern.

BASIC Stamp 2 Integration and Cautions

Connects the sensor to BASIC Stamp 2 and warns about Board of Education cable usage.

BASIC Stamp 2 Measurement Code

Provides sample BASIC Stamp 2 code for distance measurement in inches and cm.

Propeller Microcontroller Interface

Details the 'ping.spin' object for the Propeller microcontroller and its usage.

Resources and Document History

Resources and Downloads

Links to example projects, tutorials, and product information.

Product Change Notice

Lists hardware revisions and their impact on functionality.

Revision History

Details the history of the document's versions and updates.

Parallax PING))) 28015 Specifications

General

Type	Ultrasonic Distance Sensor
Operating Voltage	5 VDC
Measurement Range	2 cm to 3 m
Range	2 cm to 3 m
Beam Angle	30 degrees
Output	Positive TTL pulse
Supply Current	35 mA
Echo Pulse	Positive TTL pulse
Operating Current	35 mA
Input Trigger	Positive TTL pulse, 2 μs min