RaspberryPi: keeping time without the internet

The RaspberryPi does not have a real time clock (rtc) so normally requires an internet connection to reset the time and date from a time server.

 

For my BirdBox 2014 project I need to be able to time-stamp files & data, but it would not matter if the system time was a few minutes out either way, so I have been considering the options.

One popular solution is to connect a small rtc board to the RaspberryPi. These boards are small, low cost, and include a lithium backup battery.

BirdBoxPiCam 2014; #1 The Plan

I bought my first Raspberry Pi mid-2012 with the idea of using it with a bird box camera.

 

Unfortunately there were problems with the EzCap video capture module driver, and I have still not been able to get this going.

However, now armed with a PiCam I'm hoping for better luck with my new project.