Having fun with some RTCs and my Arduino Pro Mini.
As a spin-off from my NeoPixel Clock project, I am gathering data to measure the drift between the Arduino internal clock, a DS1307 RTC and a few DS3231RTCs.
Anyway, wanted a DS3231SN based RTC. So I ordered a couple...
* DS3231SN in the product title ✔️
* DS3231SN in the product description ✔️
* DS3231M delivered today ❌
Not happy 😠