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Home Member Profile
Maine Solder Guy
Member Since:
August 28, 2006
Gender:
Male
Country:
United States
Bio:
Full time IT guy and doc. Intrigued by embedded systems
Current Role:
Here- a hobbyist, pure and simple
Programming Languages:
Mostly Wiring/Arduino, pretty good at BASIC, still can write something in Pascal
Interests or Hobbies:
GPS, Time, repurposing components and modules
No public wish lists :(
Product BOB-10160 | about a year ago
One more post: I spent a couple of hours getting the interrupt to work this morning. Two pieces of info that may be of use— (1) The output of the square wave pin on the ds3234 cannot be tied directly to the input of an Arduino. A 4.7K resistor seemed to work fine. (2)You may need to build a delay into your code between detecting a square wave and reading the registers to let the update complete.
Product BOB-10160 | about a year ago
Cancel that question. Half asleep this morning. I figured it out.
Product BOB-10160 | about a year ago
Some help, please. I intend to use the square wave output to trigger an interrupt on a uC. The datasheet says that this line needs a pullup resistor. The schematic for the board shows a 10K resistor and 22pf cap to ground from this pin. I presume that the 10k, since it is on the “high” side of the cap, is not an issue in terms of my pullup resistor.
So… a couple of questions from this newbie. The reference diagram on the datasheet does not indicate a need for this circuitry. Why is it there? Second, any suggestions for a pullup? I was thinking in the 4.7K range.
Thanks all.
Ed