SEN0312

      ME007YS Waterproof Ultrasonic Sensor SKU:SEN0312   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   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 realtime value, response time: 100ms. UART TTL level UART Output Form   Data bit 8 Stop bit 1 Parity none Band rate 9600bps   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 0xFF DATA_L 0x07 SUM 0xA1 Note: checksum only reserves the low 8-bits of the accumulated value. SUM=(Header+Data_H+Data_L)&0x00FF  =(0XFF + 0X07 + 0XA1)&0x00FF  =0XA7;  Copy 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  ME007YS Ultrasonic Sensor  4P Connector 0xA7   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](http://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