This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost. Perfect for datalogging, clock-building, time stamping, timers and alarms, etc. Equipped with PCF8523 RTC - it can run from 3.3V or 5V power & logic!

Welcome to your new project. Imagine what you can build here.

The tubes: PreAmp: 3x PCF802 Amp (Not Single-Ended): 2x PL504 4x PCL805