Questions tagged [ds1307]

a low-power I2C serial real-time clock (RTC) with full binary-coded decimal (BCD) clock/calendar plus 56 bytes of non-volatile SRAM

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i2cdetect detects the device but also shows a full row of addresses

I have successfully setup a RTC clock ( DS3231 ) on a RPi zero. The whole process was explained here. It works as expected but with only a minor difference: Row 5 is filled with numbers from 0x50 to ...
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3answers
42k views

i2cdetect shows every possible address

I was trying to turn on I2C following this tutorial http://www.raspberrypi-spy.co.uk/2014/11/enabling-the-i2c-interface-on-the-raspberry-pi/ But I have problem which I cannot solve. The command ...
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2answers
636 views

UPS PIco on Raspberry Pi B+ with Jessie

I have been using a PiModules UPS PIco add-on board on my Raspberry Pi B+ using Wheezy for over a year now. No problems. I just created a new boot SD with Jessie and while the PIco unit seems to be ...
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1answer
31 views

Raspberry pi ds1307 integration

I would like to integrate ds1307 clock module as a part of my 'garden automation project' to raspberry pi. The concept of the project is the servo will rotate in a specific time. So should I ...
0
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1answer
44 views

DS3231 doesn't update its internal time?

UPD: with another chip of the same model RTC works just fine, presumably that the chip was broken/damaged. I installed DS3231 RTC clock ( which is detected as DS1307 for some reason). My config.txt ...
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2answers
80 views

Why is my RTC DS3231 but seems DS1307?

I bought a RTC DS3231 because of the accuraty of time (2ppm, I was searching an accurate RTC). When I received it, I checked that in the encapsulating it is as well marked like DS3231. But, after ...
0
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1answer
1k views

RTC DS3231 could not be detected

HardwareSet up: Pi Model B, with Raspian Stretch. Boots up. Now try to install RTC Ds3231 module (with yellow capacitor at back) and plugged into the GPIO pins. Software: $ lsmod shows part of the ...
4
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4answers
20k views

How can I automatically update the hwclock with NTP when I have internet connection

I'm using an RPi with Raspbian which runs the NTP-daemon by default. I have connected an rtc-ds1307 external i2c hardware clock. I was following the instructions given here to set it up: http://learn....
8
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3answers
9k views

How to install Real Time Clock (RTC) on Raspbian?

I have: Raspberry Pi with 2015-05-05-raspbian-wheezy ds1307 attached (it's an Adafruit board, pullup resistors not installed). How do I: configure drivers make sure the Pi actually uses the RTC ...
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1answer
1k views

rtc module in Raspbian Stretch

I'm following this guide to set up the rtc module in Raspbian Stretch. First question: after the changes described, the RPi doesn't sync anymore with the actual time from the Internet. Second ...
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4answers
1k views

Connecting RTC DS1037, Pin 5 already occupied

I think of adding a RTC Module to my Raspberry Pi. I found the following tutorial. http://www.forum-raspberrypi.de/Thread-tutorial-realtime-clock-rtc-ds1307-am-raspberry-pi-betreiben In general it's ...
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2answers
7k views

Cannot perform echo command to load driver for rtc module

I've come across a few tutorials for adding an rtc module to a pi. They all include a step in which you do echo ds1307 0x68 > /sys/class/i2c-adapter/i2c-1/new_device. When I try this, I get a bash: ...
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2answers
5k views

Configuring to read RTC at boot time

I have added an RTC to the I2C bus of the Raspberry Pi. If I follow the steps mentioned here (I am using the DS1307 RTC IC), I can run hwclock and read the time. root@raspberrypi:~# modprobe rtc-...
2
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0answers
1k views

Why is my RTC DS1307 not being recognized?

I'm trying to wire up a DS1307 RTC to my Model B Pi. I'm following the diagram as shown in this crude image and I've also tried it like this but it isn't recognized by the Pi. When I run i2cdetect -...
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2answers
7k views

How to connect DS1307 5V Real time clock (RTC) to 3.3V?

I have DS1307 small SMD parts so I can't simply leave out the resistors easily to make it work with 3.3V by default as with adafruit kit tutorial. How could I connect this device to my Raspberry Pi ...