Did I see somewhere here or elsewhere some routines or library for read/write of an arbitrary-large array of "bits".

Something like STL bitset<N> ... I did see that there is an STL port (attempt?) but is it clean/easy to install?  Other alternatives?

Thanks,
John

There are two events that are going on here, so you need two independent parts to your loop code
   * Button Pressed
   * timer has Elapsed

Code:

Pseudocode
loop()
   // Handle the Button Press:
    if the button has been pressed
        increment the mode, or roll over to zero
        set the interval

   // Handle the timer elapsing:
   if mode != 0
         if  ( now - lastPictureTime > interval )
              snap the Picture
              lastPictureTime = now

Hope this helps!
John

And on the end its like the pid just shutdown itself.

What do you mean by this, it stopped working altogether?  If you post your sketch it would be helpful...

Maybe there is a bug in your code?  Are you using a library, or did you write it?

Could you use a wire and connect pin 2 to 5V and to GND ?
I can't see what the problem is with the code, so I want to be sure that pin 2 is high and low.

Poor phrasing, that!

Looks to me like there should be a Wire.begin() in there...

Code:

void makeText () {
  char myText[4];
  sprintf(myText, "%02d, %02d ",day(),year());
  showDate(myText);
}

...
In the second case it has nothing to do with sprintf.  In the second case you've declared a local variable.  As soon as that function returns that variable goes out of scope.  So you can't use it anywhere else.  The same would happen if it was an intended variable and you had just done a simple assignment.

No, nothing wrong with passing the local variable to another function as in the above code.

The problem is probably putting the 8 characters into the 4 character array.  bratan, you need by my count myText[8] to hold what you're trying to put in there ("11, 22 " plus the end of string character)

Cheers,
John

Its the one from adafruit tutorial on github:https://github.com/adafruit/RTClib

If you compare the  "ds1307" example with the "softrtc" example from the library, it will become clear...

You want to use the "ds1307" example. 

Cheers,
John

@Lefty:

Oops

@OP

I too don't care for Egyptian Style.  #3: http://www.codinghorror.com/blog/2012/07/new-programming-jargon.html

K&R for me...

@Jim_Socks

Looks great!  It's really coming along!

How are you going to do the sensors for the glasses on your "carousel"?

Cheers,
John

sure?

No.

hmmm if
Serial.print("$PMTK314,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*29"); //can turn on only the second sentence (GPRMC)

Serial.print("$PMTK314,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*28"); //can turn on GPRMC and GGA

how bout turn only GGA?

Serial.print("$PMTK314,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*29"); //can turn on GGA?

I guess I dont understand what is nonsense about it?
Im sorry I just tinker, I am not a programmer by any means.

They're trying to tell you that in your constructor you are wanting to set the values of your instance ("member") variables, yet you are creating local ("function") variables which are "hiding" the instance variables.

You have:

Code:

Artnet2::Artnet2()
{
bool matchArtnet = true;    // set values of "new" local variables
char _artnetHeader[] = "Art-Net";
int _channel_position = 1;
int _number_of_channels = 512;
// discard the above local variables
// and the instance variables are unaffected
}

But you want:

Code:

Artnet2::Artnet2()
{
matchArtnet = true;      // set values of existing instance variables
_artnetHeader[] = "Art-Net";
_channel_position = 1;
_number_of_channels = 512;
}

HTH,
John

I'm trying to write code that lets me use Esplora board to control a robot. When I start the code, it is supposed to set up the servos to center position but nothing happens until I press the joystick button. How can I fix the problem?

Code:

   robotstand01; < nothing happens here
...
    robotstand01(); < it works.

Seriously?