first commit

chapter-3/4Char

@@ -0,0 +1,143 @@
+/*
+ 4Char Test
+ Sketch in Programming to test a scrolling 4-character display.
+ This example code is in the public domain.
+*/
+
+#include <SoftwareSerial.h>[a]
+#define SerialIn 2
+#define SerialOut 3[b]
+#define 4Delay 600
+
+
+SoftwareSerial mySerialPort(SerialIn, SerialOut);[c]
+
+
+void setup()
+{
+pinMode(SerialOut, OUTPUT);
+pinMode(SerialIn, INPUT);[d]
+
+
+mySerialPort.begin(9600);
+mySerialPort.print("v");[e]
+
+
+
+
+}
+
+
+void loop()
+{
+
+
+mySerialPort.print("xxxx")[f];
+delay(4Delay);
+mySerialPort.print("xxx1");
+delay(4Delay);
+mySerialPort.print("xx12");
+delay(4Delay);
+mySerialPort.print("x123");
+delay(4Delay);
+
+
+mySerialPort.print("1234"[g])[h];
+delay(4Delay);
+
+
+mySerialPort.print("2345");
+delay(4Delay);
+
+
+mySerialPort.print("3456");
+delay(4Delay);
+mySerialPort.print("4567");
+delay(4Delay);
+mySerialPort.print("5678");
+delay(4Delay);
+ mySerialPort.print("6789");
+delay(4Delay);
+mySerialPort.print("7890");
+delay(4Delay);
+mySerialPort.print("8900");
+delay(4Delay);
+mySerialPort.print("9000");
+delay(4Delay);
+mySerialPort.print("0000");
+delay(4Delay);
+
+
+for (int i = 0; i <250; i++)
+        {
+        mySerialPort.print(0x77);
+        mySerialPort.print(itoa(i,););
+        }
+
+
+
+
+mySerialPort.print("----");
+delay(4Delay);
+mySerialPort.print("8888");
+delay(4Delay);
+
+
+mySerialPort.print("----");
+delay(4Delay);
+mySerialPort.print("xxxx");
+delay(4Delay);
+
+
+mySerialPort.print("xxxH");
+delay(4Delay);
+mySerialPort.print("xxHE");
+delay(4Delay);
+mySerialPort.print("xHEL")[i];
+delay(4Delay);
+
+
+
+
+mySerialPort.print("HELL");
+delay(4Delay);
+
+
+mySerialPort.print("ELLO");
+delay(4Delay);
+ mySerialPort.print("LLOx");
+delay(4Delay);
+
+
+
+
+
+
+mySerialPort.print("LOxt");
+delay(4Delay);
+mySerialPort.print("Lxth");
+delay(4Delay);
+mySerialPort.print("xthE");
+delay(4Delay);
+mySerialPort.print("thEr");
+delay(4Delay);
+
+
+mySerialPort.print("hErE");
+delay(4Delay);
+mySerialPort.print("ErEx");
+delay(4Delay);
+mySerialPort.print("rExx");
+delay(4Delay);
+mySerialPort.print("Exxx");
+delay(4Delay);
+mySerialPort.print("xxxx");[j]
+delay(4Delay);
+
+
+delay(4Delay);
+delay(4Delay);
+delay(4Delay);
+
+
+}

chapter-4/EMFDetector

@@ -0,0 +1,238 @@
+// Arduino Electromagnetic Interference Detector
+// Code modified by Patrick Di Justo, based on
+// Aaron ALAI EMF Detector April 22nd 2009 VERSION 1.0
+// aaronalai1@gmail.com
+
+
+int inPin = 5;                 
+int val = 0;                   
+
+
+void setup()
+{
+ // So simple there's nothing to set up!
+}
+
+void loop()
+{
+
+  val = analogRead(inPin);                        
+
+  Serial.println(val);                                    
+  val = map(val, 1, 100, 1, 2048);
+  tone(9,val,10);
+
+}
+
+If you want to get a more precise type of reading, make this simple change to the circuit at Step 6: Connect GND pin on the 4char to Arduino GND, and RX pin to Arduino digital pin 8 
+
+
+And load the following code:
+// Arduino Electromagnetic interference detector
+// Code modified by PAtrick Di Justo, based on
+// Aaron ALAI EMF Detector April 22nd 2009 VERSION 1.0
+// aaronalai1@gmail.com
+
+
+#include <SoftwareSerial.h>
+#define SerialIn 2
+#define SerialOut 7
+
+
+#define wDelay 900
+
+
+byte thou=0;
+byte hund=0;
+byte tens=0;
+byte ones=0;
+
+
+int inPin = 5;                 
+int val = 0;                   
+
+SoftwareSerial mySerialPort(SerialIn, SerialOut);
+
+
+void setup()
+{
+
+
+   pinMode(SerialOut, OUTPUT);
+   pinMode(SerialIn, INPUT);
+
+
+ mySerialPort.begin(19200);
+ mySerialPort.print("vv");
+
+
+
+
+ mySerialPort.print("xxxx");
+ delay(wDelay);
+ mySerialPort.print("----");
+ delay(wDelay);
+ mySerialPort.print("8888");
+ delay(wDelay);
+ mySerialPort.print("xxxx");
+ delay(wDelay);
+
+
+
+
+  Serial.begin(9600);
+
+}
+
+
+void loop()
+{
+
+  val = analogRead(inPin);                        
+
+  Serial.println(val);                                    
+  dispData(val);
+  val = map(val, 1, 100, 1, 2048);
+  tone(9,val,10);
+
+}
+
+
+
+
+void dispData(int i)
+{
+
+
+ char c = ' ';
+
+ ones=0;
+ tens=0;
+ hund=0;
+ thou=0;
+
+
+
+if((i<-999) || (i>9999))
+   {
+        mySerialPort.print("ERRx");
+        return;
+   }
+
+
+mySerialPort.print("w");
+
+ int sign = i;
+ i = abs(i);
+
+ ones = i%10;
+ if(i>=10) tens = ((i%100)-ones)/10;
+ if(i>=100) hund = ((i%1000)-(tens*10)-ones)/100;
+ if(i>=1000) thou = ((i%10000)-(hund*100)-(tens*10)-ones)/1000;  
+
+
+
+
+ if (thou>0)
+   {
+        mySerialPort.print(thou);
+        mySerialPort.print(hund);
+        mySerialPort.print(tens);
+        mySerialPort.print(ones);
+        return;
+   }
+
+
+ if ((hund>0)&& (sign<0))
+   {
+        mySerialPort.print("-");
+        mySerialPort.print(hund);
+        mySerialPort.print(tens);
+        mySerialPort.print(ones);
+        Serial.print((int)hund);
+        Serial.print((int)tens);
+        Serial.print((int)ones);
+        Serial.print(c);
+        return;
+   }
+
+
+
+ if (hund>0)
+   {
+        mySerialPort.print(hund);
+        mySerialPort.print(tens);
+        mySerialPort.print(ones);
+        mySerialPort.print(c);
+        Serial.print((int)hund);
+        Serial.print((int)tens);
+        Serial.print((int)ones);
+        Serial.print(c);
+        return;
+   }
+
+
+ if ((tens>0)  && (sign<0))
+   {
+        mySerialPort.print("-");
+        mySerialPort.print(tens);
+        mySerialPort.print(ones);
+        mySerialPort.print(c);
+        Serial.print("-");
+        Serial.print((int)tens);
+        Serial.print((int)ones);
+        Serial.print(c);
+
+
+
+
+        return;
+   }
+
+
+ if (tens>0)  
+   {
+        mySerialPort.print(tens);
+        mySerialPort.print(ones);
+        mySerialPort.print("x");
+        mySerialPort.print(c);
+        Serial.print((int)tens);
+        Serial.print((int)ones);
+        Serial.print("x");
+        Serial.print(c);
+
+
+
+
+        return;
+   }
+
+
+  if((ones>0) && (sign<0))
+        {
+        mySerialPort.print("-");
+        mySerialPort.print(ones);
+        mySerialPort.print("x");
+        mySerialPort.print(c);
+        Serial.print("-");
+        Serial.print((int)ones);
+        Serial.print("x");
+        Serial.print(c);
+        return;
+        }
+
+
+
+  if(ones>0)
+        {
+        mySerialPort.print("x");
+        mySerialPort.print(ones);
+        mySerialPort.print("x");
+        mySerialPort.print(c);
+        Serial.print("x");
+        Serial.print((int)ones);
+        Serial.print("x");
+        Serial.print(c);
+        return;
+        }
+}