ZiPZAP Computers Limited
Raspberry Pi => Raspberry Pi => Topic started by: norman on September 11, 2017, 09:18:19 am
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The Pi does not have a RTC as standard but they cost less than 5 pounds. Fitting and setup is easy but it would have been even easier if it came with instructions!
Add the i2c interface in RASPI-CONFIG
Add the following line in /boot/config.txt using Nano -
dtoverlay=i2c-rtc,ds3231
So sudo nano /boot/config.txt
CTRL O then CTRL X to finish.
Then -
sudo nano /lib/udev/hwclock-set
Alter -
if [-e /run/systemd/system];
then
exit 0
fi
to
#if [-e /run/systemd/system];
#then
#exit 0
#fi
Power down. Fit the RTC. A diagram of where to fit it would have been nice. https://www.zipzap.co.uk/images/rtc.jpg (https://www.zipzap.co.uk/images/rtc.jpg)
Restart.
Test with -
sudo hwclock -r
Norman
;)
PS Another one to remind me!