“Excellent product. After discovering that cheap DS3231 boards had been supplied with batteries that are not rechargeable causing explosions and the charging circuit not suitable for rechargeable batteries due to incorrect voltages, added to having to de-solder miniature resistors and/or diodes, I decided to bin them and purchase a quality item. Not cheap, but then neither is the project I am building.”
“Easy to set up thanks to I²C support, and reasonably priced. I recommend following this tutorial (minus the soldering bit) in order to set it up with a Raspberry Pi: https://www.raspberrypi-spy.co.uk/2015/05/adding-a-ds3231-real-time-clock-to-the-raspberry-pi/”
“I did the brave thing and soldered wires to connect the RTC to the back of my Pi 3+. Fortunately all was well, and my Pi now keeps accurate time even when disconnected from the Internet. Fiddly to install, but worth it.”
“Something that caught me out was that you need pull-up resistors for the 32KHz and PPS outputs (I found a 10K works fine), other than that the instructions on the Adafruit site and the DS3231 datasheet will get you up and running in no time.”
