I2C doesn't work with code

Hello,

I'm new into working with the arduino , but i like it a lot. So i'm having a problem with a piece of code. It contist of 2 functions. The first one is driving three servos. This just works fine. Then i add another function, this one is for the distance sensor. If i just run the distance function alone, it gives the disctance on the screen. (pretty correct). But if i add the servofunction, then there is trouble: readout of the distance servo gives just plain zero :-/ :-/

The distance sensor is working with I2C. Hers the complete code:

#include <Servo.h> 
/*  Distancesensor Marcel vd Kamp
    Works through I2S communication.
    SDA on analog in P4  (use black for ground, Red for 5V, Yellow for signal
    SCL on analog in P5  (only use Yellow for signal)
  */  
#include "Wire.h"
#include "SRF02.h"

SRF02 sensor(0x70, SRF02_CENTIMETERS);

unsigned long nextPrint = 0;

Servo myservoM;  // create servo object to control a servo 
Servo myservoR;
Servo myservoL;

int posM = 98;          // variable to store the servo position 
int posRL = 90;


void setup() 
{ 
  myservoM.attach(8);  // attaches the servo on pin 9 to the servo object 
  myservoR.attach(9);
  myservoL.attach(10);
  
   Serial.begin(9600);
   Wire.begin();
} 

void loop() 
{
  Measure();
  Move();
} 

void Move()
{
 for(posM = 88; posM < 108; posM += 1)        
  {                                   
    myservoM.write(posM);
    myservoL.write(posM); 
    myservoR.write(posM);              
    delay(30);                        
  } 
  
  for(posM = 108; posM>=88; posM-=1)      
  {  
    myservoM.write(posM); 
    myservoL.write(posM);
    myservoR.write(posM);     
    delay(30);                      
  } 
}

void Measure()
{
  SRF02::update();
  if (millis() > nextPrint)
  {
      Serial.println(sensor.read());
    nextPrint = millis () + 100;
  }
}

Just running: measure: getting good readings
running measure + move : no readings, getting zeros

Anyone who can help me out ?

greetings,

Marcel

Nobody ??? :cry: :cry: