SEN0313

      A01NYUB Waterproof Ultrasonic Sensor SKU:SEN0313 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   Label Name Description 1 VCC Power Input 2 GND Ground 3 RX Processed Value/Real-time Value Output Selection 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: 150-300ms; when input Low level, the module outputs realtime value, response time: 150ms. UART Data bit TTL level Stop bit 8 Parity 1 none Band rate 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 0xFF DATA_H 0x07 DATA_L 0xA1 SUM 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;  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  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](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