#include <Wire.h>

#define I2C_ADDR 0x68  // MPU6050 address

void setup() {
  Wire.begin();
  Serial.begin(9600);
  delay(100);

  // Read WHO_AM_I register
  Wire.beginTransmission(I2C_ADDR);
  Wire.write(0x75);             // WHO_AM_I register
  Wire.endTransmission(false);  // repeated start

  Wire.requestFrom(I2C_ADDR, 1);
  if (Wire.available()) {
    uint8_t id = Wire.read();
    Serial.print("MPU6050 WHO_AM_I: 0x");
    Serial.println(id, HEX);  // Should print 0x68
  } else {
    Serial.println("I2C read failed!");
  }
}

void loop() {}