Error in http://arduino.cc/en/Hacking/LibraryTutorial

the ratio of dot length dash length in morse code 1:3, not 1:4 in tutorial. (see book on morse code, or wikipedia.), interletter spacing 3 dot lengths (750 ms in example) , interword space 7 dot lengths.

sos "prosign" (see wikipedia article) letter spaces not needed might better have correct interword delay (1750 ms in example, of 250 ms trailing space of dot/dash).

the code change trivial. presently code is:-

code: [select]

int pin = 13;

void setup()
{
 pinmode(pin, output);
}

void loop()
{
 dot(); dot(); dot();
 dash(); dash(); dash();
 dot(); dot(); dot();
 delay(3000);
}

void dot()
{
 digitalwrite(pin, high);
 delay(250);
 digitalwrite(pin, low);
 delay(250);
}

void dash()
{
 digitalwrite(pin, high);
 delay(1000);
 digitalwrite(pin, low);
 delay(250);
}

for simple change should be:-

code: [select]

int pin = 13;

void setup()
{
 pinmode(pin, output);
}

void loop()
{
 dot(); dot(); dot();
 dash(); dash(); dash();
 dot(); dot(); dot();
 delay([color=red]1500[/color]);
}

void dot()
{
 digitalwrite(pin, high);
 delay(250);
 digitalwrite(pin, low);
 delay(250);
}

void dash()
{
 digitalwrite(pin, high);
 delay([color=red]750[/color]);
 digitalwrite(pin, low);
 delay(250);
}

i should correct this, not know how make corrections, nor how contact original author ask permission. advice anyone?

regards - james bryant

don't hold breath

also wouldn't wonderful if rid of calls delay().

...r

Arduino Forum > Community > Website and Forum > Error in http://arduino.cc/en/Hacking/LibraryTutorial

arduino