Hello and welcome

Follow this tutorial:

http://arduino.cc/en/tutorial/button

Easiest way I think:

http://codepad.org/VLfagSkg

What if you try older IDE (1.01) ?

Yes I've looked this function in IDA, and here it is:

Code:

loc_A6:
nop
adiw    r24, 1
ldi     r18, 3
cpi     r24, -24
cpc     r25, r18
brne    loc_A6

So 6 instructions that probably takes 7 clocks.. As you said, 440 / 7 = close to 62.5. Sorry then, this function is useless

Code:

void delayClocks( uint32_t clocks )
{
  do
  {
    __asm( "nop" );
  }
  while ( --clocks );
}

But, I don't think it will be the correct delay as you expect, I tested it and: delayClocks( 1000000 ) should be a delay of 62.5 milliseconds right? Well on my Arduino it is more like 440 milliseconds...

Hello

I don't know if it's a bug, but in my current program I have a Serial.print that prints some data every seconds in the Serial Monitor. So the TX LED is blinking every seconds, until now everything is normal.

But if I close the Serial Monitor, the LED continue blinking for approx 93 seconds, and then stay ON. After a press of the Reset button, the LED is still ON.

Only when I unplug the power (from USB), and plug it back, the LED stay OFF as it should. When I reopen the Serial Monitor, the LED starts blinking every seconds again, as should, and the problem always happen like 93 seconds after I close the Serial Monitor.

Any idea why? Should I check if Serial.available() before the Serial.print?

Yes, look the example "Blink without delay".

I never tried thermistors but from what I've read, they aren't accurate, even 2 thermistors of the same model, could show different values at the same temperature. So you have to make your own lookup table by using a thermometer (or 2, to be more accurate) and measure the resistance at different temperatures. You could use a sensor such as the DHT22 (they are accurate, I have 2 of them and they show the same temp.) to automatically build a lookup table

A thermistor? I don't think you need a library for that

http://bildr.org/2012/11/thermistor-arduino/

OK, I will stop worrying about memory lifetime then

Hello

And you could calculate that delay with something like this:

Code:

delay_ms = 3 / sin( angle )

So with this example, when the angle is 90 the delay will be 3 ms until the next servo move (91 or 89) and with for example an angle of 179, the delay will be ~172 ms. I suggest you use microseconds for more accuracy.

(Be carefully with angles 0 or 180, it will divide by 0 and your Arduino may explode )

Oh and don't use delay() or delayMicroseconds() functions, instead look at the "Blink without delay" example to see how to do delays without those blocking functions.

Is your Serial Monitor set at the same baud speed as in your code?

Well, I have an Arduino since approx 7 months, uploading on average 10 times a day... (that's how it works when you want to explorate and learn) so that's how I calculated those 2000+. Maybe you don't realize, but it goes quick.

Well you are right, I use a Mega 2560 so can't replace chip (at least not easily) but (sainsmart's) Mega 2560 is like 15$ these days. But still, isn't it possible for the "uploader" (avrdude?) to "download" the current program that is on the chip, compare with the to-be-uploaded and if only few bytes changed only upload those bytes? Is it theorically possible and if yes, why it hasn't been made? It would greatly increase the lifetime of that flash memory right?

Hello

I'm not sure where to post this question...

I am wondering if when I upload a program in which I did only small changes compared to the previous version of that program (changing for example byte a = 2 to byte a = 3), will the whole program be uploaded or just the changes?

My real question is, will uploading a program "damage" every memory cells it uses, even if only one memory cell was required to be changed? Considering "memory supports at least 10,000 writes or upload cycles"... I'm already at 2000+ uploads I think, and I haven't even done 10% of the code for my project, just testing things...