A: You can easily wire this breakout to any microcontroller, we'll be using an Arduino. For another kind of microcontroller, just make sure it has I2C, then port the code - its pretty simple stuff! more

A: The DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping when main power to the device is interrupted. more

A: Arduino library for the DS3231 real-time clock (RTC). Library to communicate with Maxim's DS3231 high-precision real-time clock (RTC). Eric Ayars DS3231 library with JeeLabs/Ladyada's RTC libraries spliced in by Andy Wickert more

A: When the Pi reboots it can set it’s own internal clock using the time held in by the RTC. The easiest way of implementing an RTC is to buy a pre-made module. Luckily RTC modules are relatively cheap and easy to obtain. Some modules will attach directly the Pi’s GPIO header but these may get in the way of other devices so I prefer more generic modules that keep the GPIO clear for other purposes. more

A: Accurate DS3231 Real Time Clock as Alternative to DS1307. more

A: This Real Time Clock (RTC) is the most precise you can get in a small, low power package. Most RTC's use an external 32kHz timing crystal that is used to keep time with low current draw. And that's all well and good, but those crystals have slight drift, particularly when the temperature changes (the temperature changes the oscillation frequency very very very slightly but it does add up!) more

A: Then we come to the AT24C32N (2.7 to 5.5v) memory chip that is also on this breakout board. Another of those 4 resistor bricks is lifting pins 1,2 and 3 to Vcc, so according to the eeprom datasheet this unit is being set to 0×57 on the I2C bus. more

A: I have found that the use of the RTC chip- DS3231 is extremely hard using the arduino. Just setting the time is pretty complex, not mentioning the code. Therefore I have found a great and easy to use library which really enhances the use of the DS3231 chip. Let's get right onto it. more

A: Not that long ago, modules would ship with a CR2032 battery already installed. However, more recently, many sellers of these modules no longer ship them with a battery, claiming that to do so is unsafe. more

A: I2C address 0x68 is the DS3231 and 0x56 is the AT24C32. Note that on some of the new revision boards the AT24C32 address is 0x57. more

A: I was looking for DS3231 alarm function and I came across multiple libraries such as Radon. The libraries people used are way too complex and difficult to understand. I wanted to make a timer using the DS3231 module but other instructions/notes were unclear. more

A: One thing that I definitely want to add to Rev 2 of my LCD clock is the ability to display the temperature. I found out that since the DS3231 has a temperature compensated internal crystal, you can poll it for the temperature. more

A: Power Pins,I2C Logic pins,Other Pins more

A: Ds3231 Schematic more