Topic: DS1307 RTC
At Ebay purchased a DS1307 module with battery for $1.80 and want to connect it to the I2C system.
It was not that easy to get it to run and I am still struggling a bit:
However this site http://www.raspberrypi.org/phpBB3/viewt … mp;t=16218 is giving more pointers that the ones below:
Added with this http://www.raspberrypi.org/phpBB3/viewt … mp;t=20619 link the RC works but
root@pi:~# i2cget -y 1 0x68 0
Error: Could not set address to 0x68: Device or resource busy (still produces an error)
Or http://www.element14.com/community/grou … pi-via-i2c for a more complete overview.
Or if you can read German use this page as its the best match for my real time clock module. See here: http://www.forum-raspberrypi.de/Thread- … -betreiben same sort of link here http://ruessel.in-chemnitz.de/arm/rtc.html
O noticed that the drift is quite high so played the bidding game on Ebay and got a high precision RTC module for about $2.
Will put the experience here shortly.