How to setup Processing for Android to receive and send Serial communication over bluetooth ?

Answers

• dattasaurabh82

  January 2016

  I'm following this tutorial.. and till now I've had no problem till( Actually had one but solved it with an import -- actually by following thread here in the forum only).. Android/Processing Sketch 4: DiscoverBluetooth section.. I'm getting two errors(Attached in the picture)..

  After looking around it seems people had no problems from Eclipse.. But I want to stick to the IDE..

  Can anyone help?
• akenaton

  January 2016 edited January 2016 Answer ✓

  @dattasaurabh82===

  -your tutorial is for processing2: you are with P3, so you are in a fragment extending PApplet; you have to modify your code according to the fragment class...

  • or you can use ketai lib for bluetooth if it has been updated for P3

  • or use P2!
• dattasaurabh82

  January 2016

  I was hoping to use Ketai for Bluetooth Serial .. But I don't know how to do that .. can you show me a simple example @akenaton ? I'm using HC-06 and Arduino Uno from Hardware side. So you can use just some pseudo MAC address for the Bluetooth module..
• camperos

  January 2016 Answer ✓

  hello, I tried this method and it works: prof-takaya.blogspot.it/2013/02/connecting-android-and-arduino-by.html and recalls in "sketch permission" to check the two lines bluetooth
• dattasaurabh82

  January 2016

  I'll take a look here .. Thanks @camperos
• dattasaurabh82

  January 2016

  Yes It works. Thanks . But I first upgraded the Android mode on the Processing and also is now using ver 3.0.1.. Don't forget the sketch permissions (It's also commented in code as well to not forget)
• dattasaurabh82

  January 2016

  SO Now I'm able to communicate as an example I was testing send send potentiometer readings from Arduino to Processing in App.. This is the part of the Arduino Loop where it's sending the data to Serial.

  void loop() { doAverage(trimPotPin); mappedVal = map(average, trimPotMin, trimPotMax, 0, 255); //Send data only if the values have changed. if (mappedVal != prevVal) { mySerial.println(mappedVal); } prevVal = mappedVal; delay(10); }

  Full Arduino Code

  And here's my Processing code:

  I was imagining it to be set at the given position of text and the value changing in time when I rotate my pot, but instead it keeps jumping and it seems the data is longer shorter(I don't know why does it appear on the app below each other)