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project of arduino

e14 Contributor over 12 years ago

i want the basic project of arduino with full programmming

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kidiccurus over 12 years ago +2

This is the easiest project possible. Arduino - Blink
Robert Peter Oakes over 12 years ago +1

I am sorry but you need to provide a bit more detail of what you need help with Provide schematic, and or Code up to now, pictures, sketches etc. thanks
Robert Peter Oakes over 12 years ago in reply to crosseyejack +1

void setup() { pinMode(13, OUTPUT); } void loop() { digitalWrite(13,!digitalRead(13)); delay(1000); }

0 Robert Peter Oakes over 12 years ago

I am sorry but you need to provide a bit more detail of what you need help with

Provide schematic, and or Code up to now, pictures, sketches etc.
thanks
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0 crosseyejack over 12 years ago

I suggest you read through and do some tutorials if you are just trying to teach yourself the platform.
http://arduino.cc/en/Tutorial/HomePage
http://tronixstuff.com/tutorials/
http://www.ladyada.net/learn/arduino/
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0 kidiccurus over 12 years ago

This is the easiest project possible. Arduino - Blink
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0 crosseyejack over 12 years ago in reply to kidiccurus
Doh, I had boolean running = false; on the wrong line. Fixed, formatted the code and included the compile size.
boolean running = false; void setup() { pinMode(13, OUTPUT); } void loop() { digitalWrite(13,running=!running); delay(1000); }
Binary sketch size: 1070 bytes (of a 32256 byte maximum, 3.32 percent).
And tbh we can do even better than that :-) (/me ponders how low can it go?)
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0 Robert Peter Oakes over 12 years ago in reply to crosseyejack

void setup() { 
pinMode(13, OUTPUT);       
}
void loop() {
     digitalWrite(13,!digitalRead(13));
     delay(1000);
}

0 crosseyejack over 12 years ago in reply to Robert Peter Oakes

Any other takers? we can go deeper :-)
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0 Robert Peter Oakes over 12 years ago

void setup() {   
pinMode(13, OUTPUT);         
}  
void loop() {  
     digitalWrite(13,!digitalRead(13));  
     delay(1000);  
}

compiles to a Binary sketch size: 1,234 bytes (of a 32,256 byte maximum)

void setup() {   
DDRB = DDRB | B00100000; // set pin 13 to output     
}  
void loop() {  
  PORTB = PORTB ^ B00100000;
  delay(1000);  
}

Compiles to a Binary sketch size: 666 bytes (of a 32,256 byte maximum)

Oh Ya

0 crosseyejack over 12 years ago
Using the registers on the micro and compiling to 666 bytes. NICE :-)

EDIT: Using _delay_ms(); we can get it down even smaller but I still like the 666 bytes compile
#include <util/delay.h> void setup() { DDRB = DDRB | B00100000; // set pin 13 to output } void loop() { PORTB = PORTB ^ B00100000; _delay_ms(1000); }
Binary sketch size: 494 bytes (of a 32256 byte maximum, 1.53 percent).
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0 Robert Peter Oakes over 12 years ago in reply to crosseyejack

i looked for a lower level delay function but could not find it, well done

I will keep a mental note of that call for future

As a beginner of course people will take the first approach but even in this simple demo is shows that when the memory starts to get constrained there are ways of significantly getting it back

we reduced a >1234byte program by 2/3rds (494 bytes) which is awesome if you think about it.

Peter
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0 Robert Peter Oakes over 12 years ago

I am surprised we have not had comments regarding what we just did, Im sure there are plenty of new comers that are just shaking their head
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