Updated and fixed Example 08A processing sketch from this book. The arduino code needed slight tweaking as well but I have now fully tested both pieces to ensure they work together.
This project originally sets up a lamp that will change colors based on information pulled from an xml or RSS feed.
This book version includes a light sensor and a button to start the process as well as the 3 LEDs for red, green, and blue.
This project and original code are over a decade old, no longer functional, and others have had the same issues I did. This led me to create this repository.
I have located and included the original schematic for reference:
A well as the one from the book that goes with the above code:
I decided to make my own schematic because the one from the book is a little hard to see in places:
Important: In the processing sketch on line 49 you might have to change the number in
String arduinoPort = Serial.list()[1]; to match your port. Most likely 0 if not 1. You can also
uncomment line 48 and run the sketch to print a list of available ports.
I have included a pre-made font file in the source folder, but feel free to create your own. You can create the font file in the Processing IDE:
- Copy the font name from the sketch
- Under the "tools" menu click the font tool
- Match a font to the right size and paste the name from the sketch
- Click create
Once you have tweaked the source files to your desired settings and finished wiring up the circuit:
- Connect the arduino
- Upload the
Example_08B.inosketch to your arduino - Close the arduino IDE to free your serial port
- Run the
Example_08A.pdesketch in processing - Press the circuit's button to toggle the leds on and off
You should see a screen like this:
or this:
Congratulations! You have built an internet connected lamp that will change depending on whatever parameters you specified.
This project is very customizable and extendable, and I hope someone gets some use from it. I'm personally thinking I might set this up to monitor HF band conditions for listening to shortwave radio, but the possibilities are endless.
Another thing that I find very nice about the Processing IDE is the ability to export your program with a self contained java/processing environment for different operating systems. Once you have this configured to your liking you can export the entire thing and save a copy so that you can run it wherever you want with no need for the IDE.
Lastly, I wanted to say I am very impressed with the processing.org project, and very sad to see that it has not gotten more attention. The history and how it is intertwined with arduino and wiring is fascinating. This also makes them natural partners. I intend to utilize and further the processing project when and where it makes sense, and I suggest you keep it in mind for your future projects as well!
Here are links to the original sources of information: