Arduino speaks Nerd(kit) and Nerd(kit) speaks Arduino

Both the Arduino and Nerdkit are based on ATMega168/328.  So, one would guess that binary program code should work essentially the same on both.  I put this to the test with a simple program.  I made (modified existing code that came as samples) programs to blink an LED for each kit.  The Arduino sketch (code) is:



int ledPin =  13;    // LED connected to digital pin 13
// The setup() method runs once, when the sketch starts
void setup()   {                
  // initialize the digital pin as an output:
  pinMode(ledPin, OUTPUT);     
}
// the loop() method runs over and over again,
// as long as the Arduino has power
void loop()                     
{
  digitalWrite(ledPin, HIGH);   // set the LED on
  delay(1000);                  // wait for a second
  digitalWrite(ledPin, LOW);    // set the LED off
  delay(500);                  // wait for a second
}


and the c code for Nerdkit is:

#define F_CPU 14745600
#include
#include
#include
#include
#include
#include
#include "../libnerdkits/delay.h"
#include "../libnerdkits/lcd.h"


int main() {
  // LED as output
  DDRB |= (1<
  
  // loop keeps looking forever
  while(1) {
    // turn on LED
    PORTB |= (1<
    //delay for 300 milliseconds to let the light stay on
    delay_ms(300);
    // turn off LED
    PORTB &= ~(1<
    //delay for 800 milliseconds to let the light stay off
    delay_ms(800);
  }
  return 0;
}

Both produce code that blinks an LED on pin PB5 of the ATmega168/328.  I was able to use AVRDUDE to upload the .hex file generated by Arduino IDE to the Nerdkit and vice versa.  The only tricks were getting the AVRDUDE options correct.  Well, that and changed the Arduino IDE to build for 168 which the Nerdkit has.  (Nifty GUI to ease uploading .hex to the Arduino found at NGCoders.)

This result should have been expected... and was.  But what was proved is that the different bootloaders did not affect the outcome.  At least with such a simple program.

Nerdkit on left, Arduino Duemilanove on the right, both running the identical .hex code.