Hem R-Pi & Hobbyelektronik Raspberry Pi Utbyggnadskort RasClock - Raspberry Pi Real Time Clock Module
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RasClock - Raspberry Pi Real Time Clock Module

Art.nr: RasClock
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RasClock is a highly accurate real-time clock that plugs directly into the Raspberry Pi and includes a battery backup. The module is installed directly into the GPIO header pins with no wiring or soldering. It uses the 3.3V, GND SDA and SCL pins....

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RasClock is a highly accurate real-time clock that plugs directly into the Raspberry Pi and includes a battery backup. The module is installed directly into the GPIO header pins with no wiring or soldering. It uses the 3.3V, GND SDA and SCL pins. The module stays within the outline of the Raspberry Pi and sits lower than video output so can be easilly installed within most cases.

RasClock utilises a highly accurate chip with features like:
  • Very accurate timekeeping (typically ±3ppm or <2 minutes deviation per year).
  • Integrated crystal that compensates for temperature and age.
  • The supplied 36mA 3V battery will keep the time for around two years if the device isn't used and considerably longer if it is.
  • Fits inside most cases easilly inclusing the ModMyPi Raspberry Pi Case, PiBow's and Multicomp Cases.

Why do I need a Real Time Clock for my Raspberry Pi?

The Raspberry Pi is an ultra-small and ultra-low cost computer. In order to achieve this size and price, several non-essential items usually found on a computer had to be omitted. Laptops and computers keep time when the power is off by using a pre-installed, battery powered 'Real Time Clock' (RTC). However, this Real Time Clock module is not included with the Raspberry Pi. To keep time, the Raspberry Pi updates the date and time automatically over the internet via Ethernet or WiFi.
 
The Raspberry Pi will simply revert back to the standard date and time settings (usually 30 November 1999) when the network connection is removed. So, for projects which have no internet connection, you may want to add a low cost battery powered RTC to help your Pi keep time!
 
The RasClock has been specifically designed for use with the Raspberry Pi and, unlike other RTC's available, can plug directly in to the Raspberry Pi's GPIO Ports.
 

How do I set it up?

Set up is easy, simply follow the guide Outlined in the Raspberry Pi Tutorial Here!