Data Sheet

1300 Henley Court

Pullman, WA 99163

509.334.6306

www.digilentinc.com

PmodMAXSONAR™ Reference Manual

Revised April 12, 2016

This manual applies to the PmodMAXSONAR rev. A

DOC#: 514-007

Other product and company names mentioned may be trademarks of their respective owners.

Page 1 of 3

Overview

The Digilent PmodMAXSONAR is an ultrasonic range finder with a resolution of 1 inch up to 255 inches away.

1 Functional Description

The PmodMAXSONAR utilizes the MaxBotix® LV-MaxSonar®-EZ1™ sonar range finder to provide accurate

information about the proximity of nearby objects. Range data is acquired by the module sending thirteen 42 KHz

beams of varying widths, allowing for more accurate detection. Under free-run operation, range readings can be

taken every 50 milliseconds.

2 Interfacing with the Pmod

The PmodMAXSONAR communicates with the host board via the UART protocol, analog output, and PWM timing.

The module requires 250 milliseconds to power up and then will perform a self-calibration if the Receive Data (RX)

The PmodMAXSONAR.

 Ultrasonic range finder with effective

detection range of 6 in - 255 in (15 cm - 648

cm)

 Detect object distance with 1.0 in (2.54 cm)

resolution up to 20 ft away

 Continuous measurement (free run)

operation

 Three options for sending range data: UART,

analog and PWM

 Small PCB size for flexible designs 0.9 in ×

0.8 in (2.3 cm × 2.0 cm)

 6-pin Pmod port with UART interface

 Library and example code available

in resource center

Features include:

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300 Henley Court Pullman, WA 99163 509.334.6306 www.digilentinc.com PmodMAXSONAR™ Reference Manual Revised April 12, 2016 This manual applies to the PmodMAXSONAR rev. A Overview The Digilent PmodMAXSONAR is an ultrasonic range finder with a resolution of 1 inch up to 255 inches away. Features include:        Ultrasonic range finder with effective detection range of 6 in - 255 in (15 cm - 648 cm) Detect object distance with 1.0 in (2.
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PmodMAXSONAR™ Reference Manual pin is left at floating or logic level high voltage. The calibration will take 49 ms, and after an additional 100 ms of waiting time, the module will be able to take measurement readings every 49 milliseconds. The UART protocol is configured with a baud rate of 9600, 8 bits, no parity, and a single stop bit.
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PmodMAXSONAR™ Reference Manual Pin 1 2 3 4 5 6 Signal AN RX TX PWM GND VCC Description Analog Output Receive Data Transmit Data Pulse-width Modulation Power Supply Ground Power Supply (3.3V/5V) Table 1. Pinout description table. Any external power applied to the PmodMAXSONAR must be within 2.5V and 5.5V; however, it is recommended that Pmod is operated at 3.3V. 3 Physical Dimensions The pins on the pin header are spaced 100 mil apart. The PCB is 0.