DIY Chronodot, homemade RTC with a battery backup

Valentin built a DIY version of the Chronodot real-time clock with battery backup. He used some disc shaped perfboard to assemble all the components. There is an optional component that you can add – a real time clock (RTC) with battery back up. It is called Chronodot RTC. All it does is ensure that clock […]

Bus Pirate: Interfacing with the ChronoDot over the I2C

Paretech used his Bus Pirate in I2C mode to interface with the DS3231 real time clock located on the ChronoDot board. The DS3231 is a high precision real time clock IC with an integrated crystal. He documented his experience with both devices. All the resources needed to setup a I2C connection to a DS3231 are […]