A01NYUB Waterproof Ultrasonic Sensor (7.5m)

Introduction

Ultrasonic distance sensor determines the distance to a target by measuring time lapses between the sending and receiving of the ultrasonic pulse. A01NYUB is an waterproof ultrasoinic sensor module with 7.5m effective ranging distance. It is compatible with 3.3V~5V device like Arduino, Raspberry Pi, etc. The average current of A01NYUB is only 15mA so it can be powered by most controllers' IO port.

The ultrasonic sensor adopts closed probe of transmitter & receiver, waterproof and dustproof, which could be well suitable for harsh and moist measuring environment. It reserves 2.54-4P interface and adopts UART communication. ME007YS ultrasonic sensor has experienced long-term test and constant optimization so it can offer a pretty fast response time, high stability and sensitivity, and low power consumption.

Use the sensor with Arduino controller to build up your projects, such as backing car annunciator, obstacle avoidance robot, object approaching detection etc.

Specification

• Operating Voltage: 3.3V-5v
• Average Current: ≤15mA
• Blind Zone Distance: 0-28cm
• Ranging Distance for Flat Object: 28-750cm
• Output: UART
• Response Time: 100ms
• Probe Center Frequency: 40K±1.0K
• Operating Temperature: -15~60℃
• Storage Temperature: -25~80℃
• Protection Rate: IP67

Features

• High Protection Rate
• Strong Resistance
• Stable Output
• Low Power
• Fast Response
• High Antistatic Performance
• Wide Operating Temperature
• High Accuracy
• Small in Size

Installation Dimension

Pinout

UART Output

Output Communication

When "RX" floats or input High level, the module outputs processed value, the data is more steady, response time: 150-300ms; when input Low level, the module outputs real-time value, response time: 150ms.

UART Output Form

UART Output

Note: checksum only reserves the low 8-bits of the accumulated value.

SUM=(Header+Data_H+Data_L)&0x00FF
=(0XFF + 0X07 + 0XA1)&0x00FF
=0XA7;

Distance= Data_H*256+ Data_L=0X07A1;

Equal to 1953 when converted into decimal;

Represent the current measured distance is 1953mm.

Arduino Platform

Preparation

• Arduino UNO
• UNO IO Sensor Expansion Board
• A01NYUB Ultrasonic Sensor
• 4P Connector

Connection

Sample Code

/*
*@File : DFRobot_Distance_A01.ino
*@Brief : This example use A01NYUB ultrasonic sensor to measure distance
* With initialization completed, We can get distance value
*@Copyright [DFRobot](https://www.dfrobot.com),2016
* GUN Lesser General Pulic License
*@version V1.0
*@data 2019-8-28
*/

#include

SoftwareSerial mySerial(11,10); // RX, TX
unsigned char data[4]={};
float distance;

void setup()
{
Serial.begin(57600);
mySerial.begin(9600);
}

void loop()
{
do{
for(int i=0;i<4;i++)
{
data[i]=mySerial.read();
}
}while(mySerial.read()==0xff);

mySerial.flush();

if(data[0]==0xff)
{
int sum;
sum=(data[0]+data[1]+data[2])&0x00FF;
if(sum==data[3])
{
distance=(data[1]<<8)+data[2];
if(distance>280)
{
Serial.print("distance=");
Serial.print(distance/10);
Serial.println("cm");
}else
{
Serial.println("Below the lower limit");
}
}else Serial.println("ERROR");
}
delay(150);
}

Raspberry Pi Platform

Preparation

• Raspberry Pi 4B
• Raspberry Pi IO Expansion Board
• A01NYUB Ultrasonic Sensor
• 4P Connector

Raspberry Pi Connection

Sample Code

Download the Ultrasonic Sensor Library

# -*- coding:utf-8 -*-

'''
# demo_get_distance.py
#
# Connect board with raspberryPi.
# Run this demo.
#
# Connect A01 to UART
# get the distance value
#
# Copyright [DFRobot](https://www.dfrobot.com), 2016
# Copyright GNU Lesser General Public License
#
# version V1.0
# date 2019-8-31
'''

import time

from DFRobot_RaspberryPi_A02YYUW import DFRobot_A02_Distance as Board

board = Board()

def print_distance(dis):
if board.last_operate_status == board.STA_OK:
print("Distance %d mm" %dis)
elif board.last_operate_status == board.STA_ERR_CHECKSUM:
print("ERROR")
elif board.last_operate_status == board.STA_ERR_SERIAL:
print("Serial open failed!")
elif board.last_operate_status == board.STA_ERR_CHECK_OUT_LIMIT:
print("Above the upper limit: %d" %dis)
elif board.last_operate_status == board.STA_ERR_CHECK_LOW_LIMIT:
print("Below the lower limit: %d" %dis)
elif board.last_operate_status == board.STA_ERR_DATA:
print("No data!")

if __name__ == "__main__":
dis_min = 0 #Minimum ranging threshold: 0mm
dis_max = 7500 #Highest ranging threshold: 7500mm
board.set_dis_range(dis_min, dis_max)
while True:
distance = board.getDistance()
print_distance(distance)
time.sleep(0.3) #Delay time < 0.6s