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RTC DS3231 to Raspberry v2011.12

Posted: Sat Apr 13, 2019 8:22 am
by Masaimara
Does anybody know how succsess to install DS3231 RTC to old Pi 1 card? Card is old version 2011.12.
I2Cdetect gives blank list. Only UU text on address 0x68/I2C-1.
An old newbie with 50 years experience of electronics........

Re: RTC DS3231 to Raspberry v2011.12

Posted: Sat Apr 13, 2019 6:44 pm
by pcmanbob
Hi.

You need to tell us which OS you are running on this old pi ?

but you could try

Code: Select all

 sudo i2cdetect -y 0
 
as older pi's used this command

Re: RTC DS3231 to Raspberry v2011.12

Posted: Sat Apr 13, 2019 10:24 pm
by robjak
as stated above, PiB is on I2c channel 0, that should be the only difference.

follow this viewtopic.php?f=28&t=156895

Re: RTC DS3231 to Raspberry v2011.12

Posted: Sun Apr 14, 2019 4:09 pm
by alphanumeric
I have a couple of DS3231's running on Pi A+'s. (A+'s not 3A+'s) I followed this tutorial.
https://learn.adafruit.com/adding-a-rea ... pberry-pi
As far as I know a UU displayed in i2c detect is normal for the DS3231's address. Once you have the Kernel driver running, i2cdetect will skip over 0x68 and display UU instead, this means its working!