Data Logger Shield and Arduino R3

[ScotMarer]

I have 2 of your data logger shields. One is on an Arduino R2 and has been working with no problems for several months. The other is on an R3 version and the RTC is not operating. I’m using the same sketch for both which is your lighttemplogger.pde with minor modifications. The SD card is OK. The serial monitor shows the following:

Initializing SD card...card initialized.
Logging to: SIDR_X02.CSV
date, time-hms, time-decimal, A0
2000/1/1, 0:0:0, 0.000, 1.42

Voltage on the RTC pins are about +3.3 volts on the battery input pin 3, and +5 on pin 8. Using an oscilloscope on pin 7 (SQW/OUT) gives no output clock but I don’t know if the bit is set in the DS1307 Control Register or not. All solder joints look good and no bent pins or other obvious problems.

Do you have any suggestions other than substituting the DS1307 from my other good shield which I don’t wish to do since it’s running 24/7 and I don’t want to disturb it.

Thanks Scot

[adafruit_support_bill]

Post photos of the front & back of the board and we'll take a look.

[ScotMarer]

The photos you asked for can be seen at the link below, I don’t know how to post them to the forum

http://one-storage.com/eonapps/dl/B9EBMUCRUZGMRDG54TBS9

Sorry for the quality but it’s the best I could do, not equal to your clear photos on your data logger assembly instructions.

[adafruit_support_bill]

The top-side solder looks good. The bottom side photo is a little washed-out in the area of particular interest (around the RTC). Look closely for any joints with a 'frosted' appearance and re-touch until they are smooth and shiny.

Also, what sketch are you running? You need to execute the " RTC.adjust" function at least once with each board to start the clock. After that, the battery should keep it going.

Code: Select all

void setup () {
    Serial.begin(57600);
    Wire.begin();
    RTC.begin();

  if (! RTC.isrunning()) {
    Serial.println("RTC is NOT running!");
    // following line sets the RTC to the date & time this sketch was compiled
    RTC.adjust(DateTime(__DATE__, __TIME__));
  }
}

You can post photos using the "upload attachment" tab below the message editing window.

[ScotMarer]

Problem solved, thanks for your prompt response,

Let Ms. Fried know that this 82 year old retired electrical engineer who has dealt with a myriad number of companies since the early 1950s thinks Adafruit Industries is an outstanding business.