ME007YS Waterproof Ultrasonic Sensor Wiki

Introduction

Ultrasonic distance sensor determines the distance to a target by measuring time lapses between the sending and receiving of the ultrasonic pulse. ME007YS is an waterproof ultrasoinic sensor module with 4.5m effective ranging distance. It is compatible with 5V device like Arduino, Raspberry Pi, etc. The average current of ME007YS is only 8mA 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 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: 5V
Average Current: ≤8mA
Peak Current: ≤50mA
Blind Zone Distance: 0-28cm
Ranging Distance for Flat Object: 28-450cm
Output: UART
Response Time: 100ms
Probe Center Frequency: 40K±1.0K
Operating Temperature: -15~60℃
Storage Temperature: -25~80℃
Operating Humidity: ≤80%
Operating Humidity: ≤90%
Sensing Angle: 44°
Protection Rate: IP67

SEN0312 ME007YS Waterproof Ultrasonic Sensor

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

Label	Name	Description
1	VCC	Power Input
2	GND	Ground
3	RX	Function Pin
4	TX	UART Output

UART Output

Output Communication

When "RX" floats or input High level, the module outputs processed value, the data is more steady, response time: 100-300ms; when input Low level, the module outputs real-time value, response time: 100ms.

UART	Data bit	Stop bit	Parity	Band rate
TTL level	8	1	none	9600bps

UART Output Form

Frame Data	Description	Byte
Header	0xFF	1 byte
DATA_H	Distance Data High 8-bits	1 byte
DATA_L	Distance Data Low 8-bits	1 byte
SUM	Checksum	1 byte

UART Output

Header	DATA_H	DATA_L	SUM
0xFF	0x07	0xA1	0xA7

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

Hardware
- Arduino UNO
- UNO IO Sensor Expansion Board
- ME007YS Ultrasonic Sensor
- 4P Connector
Software
- Arduino IDE

Connection

Sample Code

/*
  *@File  : DFRobot_Distance_ME007YS.ino 
  *@Brief : This example use ME007YS 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.h>

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(500);
}

Raspberry Pi Platform

Preparation

Raspberry Pi 4B
Raspberry Pi IO Expansion Board
ME007YS 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 ME007YS 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 = 4500 #Highest ranging threshold: 4500mm
  board.set_dis_range(dis_min, dis_max)
  while True:
    distance = board.getDistance()
    print_distance(distance)
    time.sleep(0.3) #Delay time < 0.6s

FAQ

For any questions, advice or cool ideas to share, please visit the DFRobot Forum If you have any questions about using this product, please check the FAQ list for that product for a corresponding solution.

ME007YS Waterproof Ultrasonic Sensor Wiki - DFRobot