Problem with the call and response max/arduino example ...

    Kaspar
    Apr 21 2012 | 9:10 pm
    Hi,
    I have made the following max / arduino tutorial: http://arduino.cc/en/Tutorial/SerialCallResponse
    Yes, it works, the sensor data comes out into the three number boxes, but there is a problem: - everytime I hook up the arduino, the sensor signals appear in different number boxes. This means that I need to find out which sensor comes out into which number box, everytime I boot max.
    My question is: How do I make sure that the sensor signal from A1 is routed into the first number box, the sensor signal A2 is routed into the second number box etc, everytime I open max?
    Thanks for your help!
    K
    • brendan mccloskey
      Apr 21 2012 | 9:25 pm
      Hi prefix each sensor with a unique ID:
      Serial.print("1");//ascii 49 Serial.print(yourOwnSensorValueHere, BYTE); Serial.print("2");//ascii 50 Serial.print(anotherSensorValueHere, BYTE);
      etc
      then in Max use a combination of [zl group 2] and [route 49 50]. This very short video of mine explains how:
      https://www.youtube.com/watch?v=l2ZU9RG6y1M
      just replace the random val1, random val2 etc with your own sensor values
      Brendan (fCast)
    • Scott Fitzgerald
      Apr 24 2012 | 12:55 am
      The reason this is happening is because the Arduino is pinging the attached computer waiting for a serial port to open, there's a byte sitting in the buffer, causing everything to shift over one.
      Thanks for pointing this out, I'll address it for the next Arduino software release.
    • Scott Fitzgerald
      Apr 24 2012 | 1:24 am
      Here's a patch that addresses the issue for that specific example. If you have trouble, please let me know.