YDLiDAR X4 to arduino mega dosen't work, help!

[tsk04191]

i just upload code without lidar and serial monitor appeared "⸮⸮YDLIDAR get DeviceInfo Error!"

then i plug lidar to arduino, it spin little second and stop. alos monitor appeared nothing. how can i do?

hear my code

include

// You need to create an driver instance YDLidar lidar;

bool isScanning = false;

define YDLIDAR_MOTOR_SCTP 2 // The PWM pin for control the speed of YDLIDAR's motor.

define YDLIDAR_MOTRO_EN 22 // The ENABLE PIN for YDLIDAR's motor

void setup() {

//f4,s4:115200 //g4:230400 //x4:128000 // bind the YDLIDAR driver to the arduino hardware serial lidar.begin(Serial, 9600); //output mode pinMode(YDLIDAR_MOTOR_SCTP, OUTPUT); pinMode(YDLIDAR_MOTRO_EN, OUTPUT);

while(Serial.read() >= 0){};

}

void loop() { if(isScanning){ if (lidar.waitScanDot() == RESULT_OK) { float distance = lidar.getCurrentScanPoint().distance; //distance value in mm unit float angle = lidar.getCurrentScanPoint().angle; //anglue value in degree byte quality = lidar.getCurrentScanPoint().quality; //quality of the current measurement bool startBit = lidar.getCurrentScanPoint().startBit; Serial.print("current angle:"); Serial.println(angle, DEC); Serial.print("current distance:"); Serial.println(distance, DEC); }else{ Serial.println(" YDLIDAR get Scandata fialed!!"); } }else{ //stop motor digitalWrite(YDLIDAR_MOTRO_EN, LOW); setMotorSpeed(0); restartScan(); } }

void setMotorSpeed(float vol){ uint8_t PWM = (uint8_t)(51*vol); analogWrite(YDLIDAR_MOTOR_SCTP, PWM); }

void restartScan(){ device_info deviceinfo; if (lidar.getDeviceInfo(deviceinfo, 100) == RESULT_OK) { int _samp_rate=6; String model; float freq = 7.0f; switch(deviceinfo.model){ case 1: model="F4"; _samp_rate=4; freq = 7.0; break; case 4: model="S4"; _samp_rate=4; freq = 7.0; break; case 5: model="G4"; _samp_rate=9; freq = 7.0; break; case 6: model="X4"; _samp_rate=5; freq = 7.0; break; default: model = "Unknown"; }

      uint16_t maxv = (uint16_t)(deviceinfo.firmware_version>>8);
      uint16_t midv = (uint16_t)(deviceinfo.firmware_version&0xff)/10;
      uint16_t minv = (uint16_t)(deviceinfo.firmware_version&0xff)%10;
      if(midv==0){
        midv = minv;
        minv = 0;
      }

      Serial.print("Firmware version:");
      Serial.print(maxv,DEC);
      Serial.print(".");
      Serial.print(midv,DEC);
      Serial.print(".");
      Serial.println(minv,DEC);

      Serial.print("Hardware version:");
      Serial.println((uint16_t)deviceinfo.hardware_version,DEC);

      Serial.print("Model:");
      Serial.println(model);

      Serial.print("Serial:");
      for (int i=0;i<16;i++){
        Serial.print(deviceinfo.serialnum[i]&0xff, DEC);
      }
      Serial.println("");

      Serial.print("[YDLIDAR INFO] Current Sampling Rate:");
      Serial.print(_samp_rate,DEC);
      Serial.println("K");

      Serial.print("[YDLIDAR INFO] Current Scan Frequency:");
      Serial.print(freq,DEC);
      Serial.println("Hz");
      delay(100);
      device_health healthinfo;
      if (lidar.getHealth(healthinfo, 100) == RESULT_OK){
         // detected...
          Serial.print("[YDLIDAR INFO] YDLIDAR running correctly! The health status:");
          Serial.println( healthinfo.status==0?"well":"bad");
          digitalWrite(YDLIDAR_MOTRO_EN, HIGH);
          delay(500);
          if(lidar.startScan() == RESULT_OK){
            isScanning = true;
            //start motor in 1.8v
                setMotorSpeed(1.8);
                //digitalWrite(YDLIDAR_MOTRO_EN, HIGH);
            Serial.println("Now YDLIDAR is scanning ......");
          //delay(1000);
          }else{
              Serial.println("start YDLIDAR is failed!  Continue........");
          }
      }else{
          Serial.println("cannot retrieve YDLIDAR health");
      }

   }else{
         Serial.println("YDLIDAR get DeviceInfo Error!");
   }

}

[dduddaddidda]

Hi, did you fix it? I have same problem at exp32 YDLIDAR get DeviceInfo Error!!!