Connecting two GY 87 sensors to Arduino Wemos D1 The 2019 Stack Overflow Developer Survey...

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Connecting two GY 87 sensors to Arduino Wemos D1



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I want to connect two gy 87 sensors to Arduino Wemos D1.
My sensor connections, as far as I know, should be as follows:



Sensor 1 ---> Arduino



SCL ----> SCL



SDA ----> SDA



GND ----> GND



VCC ----> 5v



Sensor 2 ---> Arduino



SCL ----> SCL



SDA ----> SDA



GND ----> GND



3.3v ----> 5v or GND



Here 3.3v acts as an AD0, not sure though.



Here is the code that I am using:-
Sensor 1 is reading fine, but sensor two gives all -1's.
Where did I go wrong?



#include<Wire.h>
const int MPU2=0x69,MPU1=0x68;
int16_t AcX1,AcY1,AcZ1,Tmp1,GyX1,GyY1,GyZ1;
int16_t AcX2,AcY2,AcZ2,Tmp2,GyX2,GyY2,GyZ2;




//-------------------------------------------------setup loop-------------
void setup(){
Wire.begin();
Wire.beginTransmission(MPU1);
Wire.write(0x6B);// PWR_MGMT_1 register
Wire.write(0); // set to zero (wakes up the MPU-6050)
Wire.endTransmission(true);Wire.begin();
Wire.beginTransmission(MPU2);
Wire.write(0x6B);// PWR_MGMT_1 register
Wire.write(0); // set to zero (wakes up the MPU-6050)
Wire.endTransmission(true);
Serial.begin(9600);
}

//---------------------------------------------------void loop-----------
void loop(){

//get values for first mpu having address of 0x68
GetMpuValue1(MPU1);
Serial.print(" ");
Serial.print("||| ");

//get values for second mpu having address of 0x69
GetMpuValue2(MPU2);
Serial.println("");
}

//----------------------------------------------user defined functions----


void GetMpuValue1(const int MPU){

Wire.beginTransmission(MPU);
Wire.write(0x3B); // starting with register 0x3B (ACCEL_XOUT_H)
Wire.endTransmission(false);
Wire.requestFrom(MPU, 14, true); // request a total of 14 registers
AcX1=Wire.read()<<8| Wire.read(); // 0x3B (ACCEL_XOUT_H) & 0x3C
(ACCEL_XOUT_L)
AcY1=Wire.read()<<8| Wire.read(); // 0x3D (ACCEL_YOUT_H) & 0x3E
(ACCEL_YOUT_L)
AcZ1=Wire.read()<<8| Wire.read(); // 0x3F (ACCEL_ZOUT_H) & 0x40
(ACCEL_ZOUT_L)
Tmp1=Wire.read()<<8| Wire.read(); // 0x41 (TEMP_OUT_H) & 0x42 (TEMP_OUT_L)
GyX1=Wire.read()<<8| Wire.read(); // 0x43 (GYRO_XOUT_H) & 0x44
(GYRO_XOUT_L)
GyY1=Wire.read()<<8| Wire.read(); // 0x45 (GYRO_YOUT_H) & 0x46
(GYRO_YOUT_L)
GyZ1=Wire.read()<<8| Wire.read(); // 0x47 (GYRO_ZOUT_H) & 0x48
(GYRO_ZOUT_L)
Serial.print("AcX1 = ");
Serial.print(AcX1);
Serial.print(" | AcY1 = ");
Serial.print(AcY1);
Serial.print(" | AcZ1 = ");
Serial.print(AcZ1);
Serial.print(" | GyX1 = ");
Serial.print(GyX1);
Serial.print(" | GyY1 = ");
Serial.print(GyY1);
Serial.print(" | GyZ1 = ");
Serial.println(GyZ1);
}


void GetMpuValue2(const int MPU){

Wire.beginTransmission(MPU);
Wire.write(0x3B); // starting with register 0x3B (ACCEL_XOUT_H)
Wire.endTransmission(false);
Wire.requestFrom(MPU, 14, true); // request a total of 14 registers
AcX2=Wire.read()<<8| Wire.read(); // 0x3B (ACCEL_XOUT_H) & 0x3C
(ACCEL_XOUT_L)
AcY2=Wire.read()<<8| Wire.read(); // 0x3D (ACCEL_YOUT_H) & 0x3E
(ACCEL_YOUT_L)
AcZ2=Wire.read()<<8| Wire.read(); // 0x3F (ACCEL_ZOUT_H) & 0x40
(ACCEL_ZOUT_L)
Tmp2=Wire.read()<<8| Wire.read(); // 0x41 (TEMP_OUT_H) & 0x42 (TEMP_OUT_L)
GyX2=Wire.read()<<8| Wire.read(); // 0x43 (GYRO_XOUT_H) & 0x44
(GYRO_XOUT_L)
GyY2=Wire.read()<<8| Wire.read(); // 0x45 (GYRO_YOUT_H) & 0x46
(GYRO_YOUT_L)
GyZ2=Wire.read()<<8| Wire.read(); // 0x47 (GYRO_ZOUT_H) & 0x48
(GYRO_ZOUT_L)
Serial.print("AcX2 = ");
Serial.print(AcX2);
Serial.print(" | AcY2 = ");
Serial.print(AcY2);
Serial.print(" | AcZ2 = ");
Serial.print(AcZ2);
Serial.print(" | GyX2 = ");
Serial.print(GyX2);
Serial.print(" | GyY2 = ");
Serial.print(GyY2);
Serial.print(" | GyZ2 = ");
Serial.println(GyZ2);
}









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New contributor




Yasmine Mustafa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.



























    0















    I want to connect two gy 87 sensors to Arduino Wemos D1.
    My sensor connections, as far as I know, should be as follows:



    Sensor 1 ---> Arduino



    SCL ----> SCL



    SDA ----> SDA



    GND ----> GND



    VCC ----> 5v



    Sensor 2 ---> Arduino



    SCL ----> SCL



    SDA ----> SDA



    GND ----> GND



    3.3v ----> 5v or GND



    Here 3.3v acts as an AD0, not sure though.



    Here is the code that I am using:-
    Sensor 1 is reading fine, but sensor two gives all -1's.
    Where did I go wrong?



    #include<Wire.h>
    const int MPU2=0x69,MPU1=0x68;
    int16_t AcX1,AcY1,AcZ1,Tmp1,GyX1,GyY1,GyZ1;
    int16_t AcX2,AcY2,AcZ2,Tmp2,GyX2,GyY2,GyZ2;




    //-------------------------------------------------setup loop-------------
    void setup(){
    Wire.begin();
    Wire.beginTransmission(MPU1);
    Wire.write(0x6B);// PWR_MGMT_1 register
    Wire.write(0); // set to zero (wakes up the MPU-6050)
    Wire.endTransmission(true);Wire.begin();
    Wire.beginTransmission(MPU2);
    Wire.write(0x6B);// PWR_MGMT_1 register
    Wire.write(0); // set to zero (wakes up the MPU-6050)
    Wire.endTransmission(true);
    Serial.begin(9600);
    }

    //---------------------------------------------------void loop-----------
    void loop(){

    //get values for first mpu having address of 0x68
    GetMpuValue1(MPU1);
    Serial.print(" ");
    Serial.print("||| ");

    //get values for second mpu having address of 0x69
    GetMpuValue2(MPU2);
    Serial.println("");
    }

    //----------------------------------------------user defined functions----


    void GetMpuValue1(const int MPU){

    Wire.beginTransmission(MPU);
    Wire.write(0x3B); // starting with register 0x3B (ACCEL_XOUT_H)
    Wire.endTransmission(false);
    Wire.requestFrom(MPU, 14, true); // request a total of 14 registers
    AcX1=Wire.read()<<8| Wire.read(); // 0x3B (ACCEL_XOUT_H) & 0x3C
    (ACCEL_XOUT_L)
    AcY1=Wire.read()<<8| Wire.read(); // 0x3D (ACCEL_YOUT_H) & 0x3E
    (ACCEL_YOUT_L)
    AcZ1=Wire.read()<<8| Wire.read(); // 0x3F (ACCEL_ZOUT_H) & 0x40
    (ACCEL_ZOUT_L)
    Tmp1=Wire.read()<<8| Wire.read(); // 0x41 (TEMP_OUT_H) & 0x42 (TEMP_OUT_L)
    GyX1=Wire.read()<<8| Wire.read(); // 0x43 (GYRO_XOUT_H) & 0x44
    (GYRO_XOUT_L)
    GyY1=Wire.read()<<8| Wire.read(); // 0x45 (GYRO_YOUT_H) & 0x46
    (GYRO_YOUT_L)
    GyZ1=Wire.read()<<8| Wire.read(); // 0x47 (GYRO_ZOUT_H) & 0x48
    (GYRO_ZOUT_L)
    Serial.print("AcX1 = ");
    Serial.print(AcX1);
    Serial.print(" | AcY1 = ");
    Serial.print(AcY1);
    Serial.print(" | AcZ1 = ");
    Serial.print(AcZ1);
    Serial.print(" | GyX1 = ");
    Serial.print(GyX1);
    Serial.print(" | GyY1 = ");
    Serial.print(GyY1);
    Serial.print(" | GyZ1 = ");
    Serial.println(GyZ1);
    }


    void GetMpuValue2(const int MPU){

    Wire.beginTransmission(MPU);
    Wire.write(0x3B); // starting with register 0x3B (ACCEL_XOUT_H)
    Wire.endTransmission(false);
    Wire.requestFrom(MPU, 14, true); // request a total of 14 registers
    AcX2=Wire.read()<<8| Wire.read(); // 0x3B (ACCEL_XOUT_H) & 0x3C
    (ACCEL_XOUT_L)
    AcY2=Wire.read()<<8| Wire.read(); // 0x3D (ACCEL_YOUT_H) & 0x3E
    (ACCEL_YOUT_L)
    AcZ2=Wire.read()<<8| Wire.read(); // 0x3F (ACCEL_ZOUT_H) & 0x40
    (ACCEL_ZOUT_L)
    Tmp2=Wire.read()<<8| Wire.read(); // 0x41 (TEMP_OUT_H) & 0x42 (TEMP_OUT_L)
    GyX2=Wire.read()<<8| Wire.read(); // 0x43 (GYRO_XOUT_H) & 0x44
    (GYRO_XOUT_L)
    GyY2=Wire.read()<<8| Wire.read(); // 0x45 (GYRO_YOUT_H) & 0x46
    (GYRO_YOUT_L)
    GyZ2=Wire.read()<<8| Wire.read(); // 0x47 (GYRO_ZOUT_H) & 0x48
    (GYRO_ZOUT_L)
    Serial.print("AcX2 = ");
    Serial.print(AcX2);
    Serial.print(" | AcY2 = ");
    Serial.print(AcY2);
    Serial.print(" | AcZ2 = ");
    Serial.print(AcZ2);
    Serial.print(" | GyX2 = ");
    Serial.print(GyX2);
    Serial.print(" | GyY2 = ");
    Serial.print(GyY2);
    Serial.print(" | GyZ2 = ");
    Serial.println(GyZ2);
    }









    share|improve this question







    New contributor




    Yasmine Mustafa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























      0












      0








      0








      I want to connect two gy 87 sensors to Arduino Wemos D1.
      My sensor connections, as far as I know, should be as follows:



      Sensor 1 ---> Arduino



      SCL ----> SCL



      SDA ----> SDA



      GND ----> GND



      VCC ----> 5v



      Sensor 2 ---> Arduino



      SCL ----> SCL



      SDA ----> SDA



      GND ----> GND



      3.3v ----> 5v or GND



      Here 3.3v acts as an AD0, not sure though.



      Here is the code that I am using:-
      Sensor 1 is reading fine, but sensor two gives all -1's.
      Where did I go wrong?



      #include<Wire.h>
      const int MPU2=0x69,MPU1=0x68;
      int16_t AcX1,AcY1,AcZ1,Tmp1,GyX1,GyY1,GyZ1;
      int16_t AcX2,AcY2,AcZ2,Tmp2,GyX2,GyY2,GyZ2;




      //-------------------------------------------------setup loop-------------
      void setup(){
      Wire.begin();
      Wire.beginTransmission(MPU1);
      Wire.write(0x6B);// PWR_MGMT_1 register
      Wire.write(0); // set to zero (wakes up the MPU-6050)
      Wire.endTransmission(true);Wire.begin();
      Wire.beginTransmission(MPU2);
      Wire.write(0x6B);// PWR_MGMT_1 register
      Wire.write(0); // set to zero (wakes up the MPU-6050)
      Wire.endTransmission(true);
      Serial.begin(9600);
      }

      //---------------------------------------------------void loop-----------
      void loop(){

      //get values for first mpu having address of 0x68
      GetMpuValue1(MPU1);
      Serial.print(" ");
      Serial.print("||| ");

      //get values for second mpu having address of 0x69
      GetMpuValue2(MPU2);
      Serial.println("");
      }

      //----------------------------------------------user defined functions----


      void GetMpuValue1(const int MPU){

      Wire.beginTransmission(MPU);
      Wire.write(0x3B); // starting with register 0x3B (ACCEL_XOUT_H)
      Wire.endTransmission(false);
      Wire.requestFrom(MPU, 14, true); // request a total of 14 registers
      AcX1=Wire.read()<<8| Wire.read(); // 0x3B (ACCEL_XOUT_H) & 0x3C
      (ACCEL_XOUT_L)
      AcY1=Wire.read()<<8| Wire.read(); // 0x3D (ACCEL_YOUT_H) & 0x3E
      (ACCEL_YOUT_L)
      AcZ1=Wire.read()<<8| Wire.read(); // 0x3F (ACCEL_ZOUT_H) & 0x40
      (ACCEL_ZOUT_L)
      Tmp1=Wire.read()<<8| Wire.read(); // 0x41 (TEMP_OUT_H) & 0x42 (TEMP_OUT_L)
      GyX1=Wire.read()<<8| Wire.read(); // 0x43 (GYRO_XOUT_H) & 0x44
      (GYRO_XOUT_L)
      GyY1=Wire.read()<<8| Wire.read(); // 0x45 (GYRO_YOUT_H) & 0x46
      (GYRO_YOUT_L)
      GyZ1=Wire.read()<<8| Wire.read(); // 0x47 (GYRO_ZOUT_H) & 0x48
      (GYRO_ZOUT_L)
      Serial.print("AcX1 = ");
      Serial.print(AcX1);
      Serial.print(" | AcY1 = ");
      Serial.print(AcY1);
      Serial.print(" | AcZ1 = ");
      Serial.print(AcZ1);
      Serial.print(" | GyX1 = ");
      Serial.print(GyX1);
      Serial.print(" | GyY1 = ");
      Serial.print(GyY1);
      Serial.print(" | GyZ1 = ");
      Serial.println(GyZ1);
      }


      void GetMpuValue2(const int MPU){

      Wire.beginTransmission(MPU);
      Wire.write(0x3B); // starting with register 0x3B (ACCEL_XOUT_H)
      Wire.endTransmission(false);
      Wire.requestFrom(MPU, 14, true); // request a total of 14 registers
      AcX2=Wire.read()<<8| Wire.read(); // 0x3B (ACCEL_XOUT_H) & 0x3C
      (ACCEL_XOUT_L)
      AcY2=Wire.read()<<8| Wire.read(); // 0x3D (ACCEL_YOUT_H) & 0x3E
      (ACCEL_YOUT_L)
      AcZ2=Wire.read()<<8| Wire.read(); // 0x3F (ACCEL_ZOUT_H) & 0x40
      (ACCEL_ZOUT_L)
      Tmp2=Wire.read()<<8| Wire.read(); // 0x41 (TEMP_OUT_H) & 0x42 (TEMP_OUT_L)
      GyX2=Wire.read()<<8| Wire.read(); // 0x43 (GYRO_XOUT_H) & 0x44
      (GYRO_XOUT_L)
      GyY2=Wire.read()<<8| Wire.read(); // 0x45 (GYRO_YOUT_H) & 0x46
      (GYRO_YOUT_L)
      GyZ2=Wire.read()<<8| Wire.read(); // 0x47 (GYRO_ZOUT_H) & 0x48
      (GYRO_ZOUT_L)
      Serial.print("AcX2 = ");
      Serial.print(AcX2);
      Serial.print(" | AcY2 = ");
      Serial.print(AcY2);
      Serial.print(" | AcZ2 = ");
      Serial.print(AcZ2);
      Serial.print(" | GyX2 = ");
      Serial.print(GyX2);
      Serial.print(" | GyY2 = ");
      Serial.print(GyY2);
      Serial.print(" | GyZ2 = ");
      Serial.println(GyZ2);
      }









      share|improve this question







      New contributor




      Yasmine Mustafa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      I want to connect two gy 87 sensors to Arduino Wemos D1.
      My sensor connections, as far as I know, should be as follows:



      Sensor 1 ---> Arduino



      SCL ----> SCL



      SDA ----> SDA



      GND ----> GND



      VCC ----> 5v



      Sensor 2 ---> Arduino



      SCL ----> SCL



      SDA ----> SDA



      GND ----> GND



      3.3v ----> 5v or GND



      Here 3.3v acts as an AD0, not sure though.



      Here is the code that I am using:-
      Sensor 1 is reading fine, but sensor two gives all -1's.
      Where did I go wrong?



      #include<Wire.h>
      const int MPU2=0x69,MPU1=0x68;
      int16_t AcX1,AcY1,AcZ1,Tmp1,GyX1,GyY1,GyZ1;
      int16_t AcX2,AcY2,AcZ2,Tmp2,GyX2,GyY2,GyZ2;




      //-------------------------------------------------setup loop-------------
      void setup(){
      Wire.begin();
      Wire.beginTransmission(MPU1);
      Wire.write(0x6B);// PWR_MGMT_1 register
      Wire.write(0); // set to zero (wakes up the MPU-6050)
      Wire.endTransmission(true);Wire.begin();
      Wire.beginTransmission(MPU2);
      Wire.write(0x6B);// PWR_MGMT_1 register
      Wire.write(0); // set to zero (wakes up the MPU-6050)
      Wire.endTransmission(true);
      Serial.begin(9600);
      }

      //---------------------------------------------------void loop-----------
      void loop(){

      //get values for first mpu having address of 0x68
      GetMpuValue1(MPU1);
      Serial.print(" ");
      Serial.print("||| ");

      //get values for second mpu having address of 0x69
      GetMpuValue2(MPU2);
      Serial.println("");
      }

      //----------------------------------------------user defined functions----


      void GetMpuValue1(const int MPU){

      Wire.beginTransmission(MPU);
      Wire.write(0x3B); // starting with register 0x3B (ACCEL_XOUT_H)
      Wire.endTransmission(false);
      Wire.requestFrom(MPU, 14, true); // request a total of 14 registers
      AcX1=Wire.read()<<8| Wire.read(); // 0x3B (ACCEL_XOUT_H) & 0x3C
      (ACCEL_XOUT_L)
      AcY1=Wire.read()<<8| Wire.read(); // 0x3D (ACCEL_YOUT_H) & 0x3E
      (ACCEL_YOUT_L)
      AcZ1=Wire.read()<<8| Wire.read(); // 0x3F (ACCEL_ZOUT_H) & 0x40
      (ACCEL_ZOUT_L)
      Tmp1=Wire.read()<<8| Wire.read(); // 0x41 (TEMP_OUT_H) & 0x42 (TEMP_OUT_L)
      GyX1=Wire.read()<<8| Wire.read(); // 0x43 (GYRO_XOUT_H) & 0x44
      (GYRO_XOUT_L)
      GyY1=Wire.read()<<8| Wire.read(); // 0x45 (GYRO_YOUT_H) & 0x46
      (GYRO_YOUT_L)
      GyZ1=Wire.read()<<8| Wire.read(); // 0x47 (GYRO_ZOUT_H) & 0x48
      (GYRO_ZOUT_L)
      Serial.print("AcX1 = ");
      Serial.print(AcX1);
      Serial.print(" | AcY1 = ");
      Serial.print(AcY1);
      Serial.print(" | AcZ1 = ");
      Serial.print(AcZ1);
      Serial.print(" | GyX1 = ");
      Serial.print(GyX1);
      Serial.print(" | GyY1 = ");
      Serial.print(GyY1);
      Serial.print(" | GyZ1 = ");
      Serial.println(GyZ1);
      }


      void GetMpuValue2(const int MPU){

      Wire.beginTransmission(MPU);
      Wire.write(0x3B); // starting with register 0x3B (ACCEL_XOUT_H)
      Wire.endTransmission(false);
      Wire.requestFrom(MPU, 14, true); // request a total of 14 registers
      AcX2=Wire.read()<<8| Wire.read(); // 0x3B (ACCEL_XOUT_H) & 0x3C
      (ACCEL_XOUT_L)
      AcY2=Wire.read()<<8| Wire.read(); // 0x3D (ACCEL_YOUT_H) & 0x3E
      (ACCEL_YOUT_L)
      AcZ2=Wire.read()<<8| Wire.read(); // 0x3F (ACCEL_ZOUT_H) & 0x40
      (ACCEL_ZOUT_L)
      Tmp2=Wire.read()<<8| Wire.read(); // 0x41 (TEMP_OUT_H) & 0x42 (TEMP_OUT_L)
      GyX2=Wire.read()<<8| Wire.read(); // 0x43 (GYRO_XOUT_H) & 0x44
      (GYRO_XOUT_L)
      GyY2=Wire.read()<<8| Wire.read(); // 0x45 (GYRO_YOUT_H) & 0x46
      (GYRO_YOUT_L)
      GyZ2=Wire.read()<<8| Wire.read(); // 0x47 (GYRO_ZOUT_H) & 0x48
      (GYRO_ZOUT_L)
      Serial.print("AcX2 = ");
      Serial.print(AcX2);
      Serial.print(" | AcY2 = ");
      Serial.print(AcY2);
      Serial.print(" | AcZ2 = ");
      Serial.print(AcZ2);
      Serial.print(" | GyX2 = ");
      Serial.print(GyX2);
      Serial.print(" | GyY2 = ");
      Serial.print(GyY2);
      Serial.print(" | GyZ2 = ");
      Serial.println(GyZ2);
      }






      arduino






      share|improve this question







      New contributor




      Yasmine Mustafa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question







      New contributor




      Yasmine Mustafa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question






      New contributor




      Yasmine Mustafa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      asked yesterday









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      New contributor




      Yasmine Mustafa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.





      New contributor





      Yasmine Mustafa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      Yasmine Mustafa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






















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