There are 3 popular RTC chips: PCF8523, DSL1307 and a DS3231.
The RPI pinout can be found here:
https://pinout.xyz/
The RPI pinout can be found here:
There are 3 popular RTC chips: PCF8523, DSL1307 and a DS3231.
The RPI pinout can be found here:
06-26-2019, 04:18 PM
(05-06-2019, 05:34 PM)BlueWave Wrote: There are 3 popular RTC chips: PCF8523, DSL1307 and a DS3231.thanks.. I have a problem. Those pins are used for the official 7" touchscreen.......
06-26-2019, 04:32 PM
You can use other GND/3V3/5V pins. Please have a look https://www.jameco.com/Jameco/workshop/c..._fig2a.jpg
06-26-2019, 06:55 PM
(06-26-2019, 04:18 PM)edy@weber.org Wrote:(05-06-2019, 05:34 PM)BlueWave Wrote: There are 3 popular RTC chips: PCF8523, DSL1307 and a DS3231.thanks.. I have a problem. Those pins are used for the official 7" touchscreen....... Hi Edy, here are the exact steps I followed.
06-27-2019, 03:55 PM
(06-26-2019, 06:55 PM)frankpintosr Wrote:(06-26-2019, 04:18 PM)edy@weber.org Wrote:(05-06-2019, 05:34 PM)BlueWave Wrote: There are 3 popular RTC chips: PCF8523, DSL1307 and a DS3231.thanks.. I have a problem. Those pins are used for the official 7" touchscreen.......
09-23-2019, 10:30 AM
(06-26-2019, 06:55 PM)frankpintosr Wrote:(06-26-2019, 04:18 PM)edy@weber.org Wrote:(05-06-2019, 05:34 PM)BlueWave Wrote: There are 3 popular RTC chips: PCF8523, DSL1307 and a DS3231.thanks.. I have a problem. Those pins are used for the official 7" touchscreen....... sudo nano /boot/config.txt #Add the following line dtoverlay=i2c-rtc,ds3231 sudo mv /lib/udev/hwclock-set /lib/udev/hwclock-set.backup sudo nano /lib/udev/hwclock-set #If the following lines exist comment them out, if they do not exist, add them #if [ -e /run/systemd/system ] ; then # exit 0 #fi I've connect ds3231 to raspberry and only applied these 9 lines steps. It's working now very good. I've done it in my first try. Thanks. |
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