Hi there,
looking for enlightenment in a situation where I want to use two devices on the same i2c bus.
I am able to use either of the devices alone.
I am unable to scan the bus and locate the id's(Arduino Playground - I2cScanner).
Any help is welcomed (wiring/sample project)
picture attached
links:
mpu6050: Arduino Playground - MPU-6050
0.96 oled: http://divshare.com/download/25084925-403
Don't use XDA and XCL.
I don't know about that display. Is it a real I2C display ? Some of those displays are not very compatible with I2C. Which library are you using for the display ? Is that compatible with the Arduino I2C (Wire) library ?
Connect everything to the same I2C bus (the SDA and SCL from the Arduino board).
Try the U8Glib for the display : Google Code Archive - Long-term storage for Google Code Project Hosting.
Thanks,
problem solved, at least I can get raw data 
code and picture for further reference.
#include <Wire.h>
#include "U8glib.h"
// Display
U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NO_ACK); // Display which does not send AC
// IMU
const int MPU=0x68; // I2C address of the MPU-6050
int16_t AcX,AcY,AcZ,Tmp,GyX,GyY,GyZ;
void setup(){
Wire.begin();
Wire.beginTransmission(MPU);
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(){
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
AcX=Wire.read()<<8|Wire.read(); // 0x3B (ACCEL_XOUT_H) & 0x3C (ACCEL_XOUT_L)
AcY=Wire.read()<<8|Wire.read(); // 0x3D (ACCEL_YOUT_H) & 0x3E (ACCEL_YOUT_L)
AcZ=Wire.read()<<8|Wire.read(); // 0x3F (ACCEL_ZOUT_H) & 0x40 (ACCEL_ZOUT_L)
Tmp=Wire.read()<<8|Wire.read(); // 0x41 (TEMP_OUT_H) & 0x42 (TEMP_OUT_L)
GyX=Wire.read()<<8|Wire.read(); // 0x43 (GYRO_XOUT_H) & 0x44 (GYRO_XOUT_L)
GyY=Wire.read()<<8|Wire.read(); // 0x45 (GYRO_YOUT_H) & 0x46 (GYRO_YOUT_L)
GyZ=Wire.read()<<8|Wire.read(); // 0x47 (GYRO_ZOUT_H) & 0x48 (GYRO_ZOUT_L)
u8g.firstPage();
do {
u8g.setFont(u8g_font_unifont);
u8g.setPrintPos(0, 20);
u8g.print(AcX);
u8g.print(" ");
u8g.print(AcY);
u8g.print(" ");
u8g.print(AcZ);
} while( u8g.nextPage() );
delay(333);
}
Nice 8)
The MPU-6050 is able to connect internally the SDA to XDA and SCL to XCL, but I think it has to be enabled with a command.
