TEI Studio

software/apps/Modeling/FM/CenterFSR_A/CenterFSR_A.ino

@@ -0,0 +1,34 @@
+//CenterFSR-A
+//position on A0, pwm:D9, dir:D8,D7
+//FSR on A1 and D4
+
+// BUZZ! (float vs int?)
+#include "Motor.h"
+
+int x, duty, fin;
+float fout;
+byte count; // used as counter
+
+void setup(){
+  Serial.begin(9600);
+  MotorA.init();
+  //for FSR
+  pinMode(A1,INPUT);
+  digitalWrite(A1,HIGH);
+  pinMode(4,OUTPUT);
+  digitalWrite(4,LOW);
+}
+
+void loop(){
+  fin = 1024 - analogRead(A1);
+  x = analogRead(A0)-512;
+  fout = - .004*(float(fin)*float(x));
+  MotorA.torque(fout);
+  if(count++ == 0){
+    Serial.print(x,DEC);
+    Serial.print(" ");
+    Serial.print(fin,DEC);
+    Serial.print(" ");
+    Serial.println(fout,DEC);
+  }
+}  

software/apps/Modeling/FM/FM.ino

@@ -0,0 +1,31 @@
+//FM synthes of a sort
+//hang on!  it's unstable and wants to limit cycle
+
+
+#include <Music.h>
+#define BIT_DEPTH 8 // gives us 16 Waveforms
+
+#include <Motor.h>
+
+byte cnt;
+float xf, vf; //
+float k = 6.0; // increase FM frequency
+float b = 0.40; // increase
+float Tf = .030 ; //integration time
+
+void setup(){
+  Serial.begin(9600);
+  Music.init();
+  Music.setWaveform(0);
+  Music.setGain(1.0f);
+  MotorA.init();
+}
+
+void loop(){
+  xf += vf * Tf;
+  vf += (k * (analogRead(A0) - xf) - b*vf) * Tf;
+  Music.setFrequency(100+vf);
+  Music.setGain(.001*abs(vf));
+  MotorA.torque(500-xf);
+  //if(cnt++==0)Serial.println(.001*abs(vf));
+}

software/apps/Modeling/FM/FMGraph/FMGraph.pde

@@ -0,0 +1,63 @@
+// Graphing sketch
+ 
+ 
+ // This program takes ASCII-encoded strings
+ // from the serial port at 9600 baud and graphs them. It expects values in the
+ // range 0 to 1023, followed by a newline, or newline and carriage return
+ 
+ // Created 20 Apr 2005
+ // Updated 18 Jan 2008
+ // by Tom Igoe
+ // This example code is in the public domain.
+ 
+ import processing.serial.*;
+ 
+ Serial myPort;        // The serial port
+ int xPos = 1;         // horizontal position of the graph
+ 
+ void setup () {
+ // set the window size:
+ size(400, 300);        
+ 
+ // List all the available serial ports
+ println(Serial.list());
+ // I know that the first port in the serial list on my mac
+ // is always my  Arduino, so I open Serial.list()[0].
+ // Open whatever port is the one you're using.
+ myPort = new Serial(this, Serial.list()[0], 9600);
+ // don't generate a serialEvent() unless you get a newline character:
+ myPort.bufferUntil('\n');
+ // set inital background:
+ background(0);
+ }
+ void draw () {
+ // everything happens in the serialEvent()
+ }
+ 
+ void serialEvent (Serial myPort) {
+ // get the ASCII string:
+ String inString = myPort.readStringUntil('\n');
+ 
+ if (inString != null) {
+ // trim off any whitespace:
+ inString = trim(inString);
+ // convert to an int and map to the screen height:
+ float inByte = float(inString);
+ inByte = map(inByte, 0, 1023, 0, height);
+ 
+ // draw the line:
+ stroke(127,34,255);
+ line(xPos, height, xPos, height - inByte);
+ 
+ // at the edge of the screen, go back to the beginning:
+ if (xPos >= width) {
+ xPos = 0;
+ background(0);
+ }
+ else {
+ // increment the horizontal position:
+ xPos++;
+ }
+ }
+ }
+