Tasks 17-20(Only 19 done)

17. Insert a variation so that the LEDs blink together.

18. Write a program so that one LED is blinking fast while the other blinks slowly.

19. Copy the ASCII printing program from http://arduino.cc/en/Tutorial/ASCIITableand run it. A good background site is the lady ada serial tutorial.

/*
  ASCII table
 
 Prints out byte values in all possible formats:  
 * as raw binary values
 * as ASCII-encoded decimal, hex, octal, and binary values
 
 For more on ASCII, see http://www.asciitable.com and http://en.wikipedia.org/wiki/ASCII
 
 The circuit:  No external hardware needed.
 
 created 2006
 by Nicholas Zambetti
 modified 9 Apr 2012
 by Tom Igoe
 
 This example code is in the public domain.

 <http://www.zambetti.com>
 
 */
void setup() {
 //Initialize serial and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }
 
  // prints title with ending line break
  Serial.println("ASCII Table ~ Character Map");
}

// first visible ASCIIcharacter '!' is number 33:
int thisByte = 33;
// you can also write ASCII characters in single quotes.
// for example. '!' is the same as 33, so you could also use this:
//int thisByte = '!';  

void loop() {
  // prints value unaltered, i.e. the raw binary version of the
  // byte. The serial monitor interprets all bytes as
  // ASCII, so 33, the first number,  will show up as '!'
  Serial.write(thisByte);    

  Serial.print(", dec: ");
  // prints value as string as an ASCII-encoded decimal (base 10).
  // Decimal is the  default format for Serial.print() and Serial.println(),
  // so no modifier is needed:
  Serial.print(thisByte);      
  // But you can declare the modifier for decimal if you want to.
  //this also works if you uncomment it:

  // Serial.print(thisByte, DEC);  


  Serial.print(", hex: ");
  // prints value as string in hexadecimal (base 16):
  Serial.print(thisByte, HEX);    

  Serial.print(", oct: ");
  // prints value as string in octal (base 8);
  Serial.print(thisByte, OCT);    

  Serial.print(", bin: ");
  // prints value as string in binary (base 2)
  // also prints ending line break:
  Serial.println(thisByte, BIN);  

  // if printed last visible character '~' or 126, stop:
  if(thisByte == 126) {     // you could also use if (thisByte == '~') {
    // This loop loops forever and does nothing
    while(true) {
      continue;
    }
  }
  // go on to the next character
  thisByte++;  
}

20. Same as 19 but make some changes in formatting. Indicate your changes through a comment.
 

20.1 Have a look at this blog and run the following programs as they are set out in the blog then make some interesting changes that you indicate with a comment and publish your versions in your blog.

20.11 Echo, echo.
20.12 Stage 2, delimiter

20.13 Stage 3, Arduino maths.

20.14 Stage 4, simple transmission of a double.

20.15 Stage 4 again, Double, double.

20.16 Stage 5, analog read. (Very similar to 18.1 above.)