Be careful with the DS3231 chips and modules, especially the modules from China. The DS3231 modules from China use chips labeled DS3231M which are less stable than the DS3231S parts (MEMS vs ...

Do you desire a teeny, tiny, little Arduino board with OLED display? You bet you do! Microview is a new "chip-sized" Arduino on Kickstarter that costs $45. What can it do? All kinds of stuff!

[Pete] wondered how real-time clock modules could be selling on eBay for $1.50 when the main component, the Maxim DS3231 RTC/TCXO chip, cost him more like $4 apiece. Could the cheap modules contain… ...