This is a library to handle Seiko's RX8010SJ RTC module with an arduino. Original datasheet can be found here. To set up your module, you only need to power up and use the i2c protocol to communicate ...

A highly accurate clock made using Arduino, which displays even Temperatures. The clock blinks the colon as well while displaying the time. Even after a power cut the clock displays the current time ...

“Here is the Kraztech Real Time Clock (RTC) Module that uses the Microchip MCP7940. ... To get you going, I already have an Arduino library to interface with the module available to everyone.

No sharp edges for the Arduino crowd. Seriously though, cool test with the freezer…I hadn’t thought to try that. I dare anyone to do that with a DS1307 module.

Debug pins and RTC battery backup; Arduino Pro 4G Module: Integrated with Portenta family; Powered by Quectel Cat.4 modem; High-speed data throughput and bandwidth; Secure data transfer; ...