09 interface programming

July 22, 2010 1:10 AM

Processing

I've been figuring out how to use Processing. It's open- source, so you can download it for free and find tutorials on the Processing website. I created the image above with one of the simple beginning codes, and the images below were created by modifiying that code. A sort of storm Undulating waves like unraveled knitting Then I figured out how to code different colors. I drew this with a mouse

Permalink

May 12, 2010 1:08 PM

Levitating Elephant

by Noah Bedford

I wrote a small clutter program to change the position of a picture of a Muybridge elephant based on the output of the step response board:
hello.elephant.py
This is the code that runs on the FTDI version of the step response board

Permalink

March 31, 2010 9:07 AM

Using a GUI to Control Processing Output with ControlIP5, Firmata via Serial

by Anna Kaziunas France

I created this simple interface to control turning on and off an LED that is attached to a microcontroller via the serial port on my Mac. I wanted to see if I could get the ControlIP5 (used to create the GUI), Firmata and serial libraries working together before I tried using more complex hardware. I intend to experiment with driving multiple servos and possibly tinkering with bluetooth using the NXT library as an "cheap" way (it's "cheap" because I already own the Mindstorms hardware) to play around with bluetooth without buying additional bluetooth modules.

The Interface: Default / Initial State:

The interface is simple - the Turn On button turns the light on and the Turn Off button turns it off.

The Interface: Button Rollover State:

Here's the Processing code:


/*-------------------------------------------------------------------
 * Fab Academy -- Module 09: Interface Programming
 *--------------------------------------------------------------------
 * Assignment: Write a user interface for an input &/or output 
 * device.
 *--------------------------------------------------------------------
 * Purpose:  This program is a test to get the controlIP5, Firmata, 
 * and serial libraries working together through the serial port.  
 * This program uses a simple button GUI interface to turn on / of an
 * LED.
 *--------------------------------------------------------------------
 * Anna Kaziunas France - 30 March 2010
 * Combined / Modified example code from:
 * controlIP5 buttons example (included the library download)
 *------------------------------------------------------------------*/


import processing.serial.*;
import cc.arduino.*;
import controlP5.*;

ControlP5 controlP5;
// we have to use controlP5.Button here since there
// would be a conflict if we only use Button to declare button b.
controlP5.Button b;
Arduino arduino;

// Variables
int ledPin = 11;
int buttonValue = 0;
int myColor = color(0);

void setup() {
  arduino = new Arduino(this, Arduino.list()[2], 57600);
  arduino.pinMode(ledPin, Arduino.OUTPUT);
  size(640,480);
  smooth();
  frameRate(30);
  controlP5 = new ControlP5(this);
  controlP5.addButton("Turn_On",255,200,80,100,70);
  controlP5.addButton("Turn_Off",0,200,160,100,70);
  println(Arduino.list());
}

void draw()
{
  background(myColor);
  fill(buttonValue);
  rect(20,20,width-40,height-40);
}

public void controlEvent(ControlEvent theEvent) {
  println(theEvent.controller().name());

}

// function buttonA will receive changes from 
// controller with name Turn_On
public void Turn_On(int theValue) {
  println("a button event from Turn_On: "+theValue);
  myColor = theValue;
  arduino.digitalWrite(ledPin, Arduino.HIGH);
}

// function buttonB will receive changes from 
// controller with name Turn_Off
public void Turn_Off(int theValue) {
  println("a button event from Turn_Off: "+theValue);
  myColor = theValue;
  arduino.digitalWrite(ledPin, Arduino.LOW);
}

Permalink

March 31, 2010 12:35 AM

Pure Data Frequency Modulator

by Elliot Clapp

The Fluxamaphonic by Elliot Clapp from Shawn Wallace on Vimeo.

Permalink

March 30, 2010 12:45 AM

DIY hobo game controllers

by Shawn Wallace

These DIY game controllers are made from pennies and cigar boxes.

They are a sample controller for the Fluxly video game, a wizard duel where you have to build your own controller to compete. The interface for the game is implemented in Actionscript and compiled using Adobe's free mxmlc compiler.