DS1307 Clock not Working
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Please be positive and constructive with your questions and comments.
- ockeydockey
- Posts: 4
- Joined: Sat Jan 26, 2013 10:53 am
Re: DS1307 Clock not Working
I don't have a spare battery in that size, but I did test the voltage. It came in at about 3.247VDC. Here are some pictures showing the front, back, and wired in the project.
- Attachments
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- Wired in the project
- In Project.jpg (578.49 KiB) Viewed 825 times
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- Back
- back.jpg (597.47 KiB) Viewed 825 times
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- Front
- front.jpg (559.74 KiB) Viewed 825 times
- ockeydockey
- Posts: 4
- Joined: Sat Jan 26, 2013 10:53 am
Re: DS1307 Clock not Working
Also, after reading up on this particular chip I noticed that some people say that the crystal needs to be grounded. Has this been your experience?
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: DS1307 Clock not Working
I've never heard of such a thing with this board.ockeydockey wrote:Also, after reading up on this particular chip I noticed that some people say that the crystal needs to be grounded. Has this been your experience?
The ds1307 can go haywire if the power and/or ground connections are flaky. Try moving it around in your breadboard, try some different jumpers, too.
- russell 27
- Posts: 242
- Joined: Thu Sep 12, 2013 3:59 pm
Re: DS1307 Clock not Working
I don't know where you took your battery voltage reading, but; Did you put a dab of solder on the negative battery pad of the board. Sometimes no solder or excessive flux can give a bad connection.
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- Posts: 5
- Joined: Wed May 07, 2014 3:44 pm
Re: DS1307 Clock not Working
I am also experiencing the same problem described by the OP.
I have tested the battery pins at the DS1307 and found them to be around 3.45 V. I also tested across the Vin and GND pins and found them to be 4.96 V. The issue is not my connection to the Arduino or a faulty battery.
Here is a picture of my soldering:
Any assistance is appreciated.
I have tested the battery pins at the DS1307 and found them to be around 3.45 V. I also tested across the Vin and GND pins and found them to be 4.96 V. The issue is not my connection to the Arduino or a faulty battery.
Here is a picture of my soldering:
Any assistance is appreciated.
- adafruit_support_bill
- Posts: 88097
- Joined: Sat Feb 07, 2009 10:11 am
Re: DS1307 Clock not Working
It looks like you have quite a bit of burnt flux around the crystal. Burnt flux can become conductive enough to affect crystal operation. Try cleaning the board with some 90% or better isopropyl alcohol and an old toothbrush.
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- Posts: 5
- Joined: Wed May 07, 2014 3:44 pm
Re: DS1307 Clock not Working
I scrubbed with 70% IPA for a minute and it works!
Thank you for the help!
Thank you for the help!
- timrossiter
- Posts: 2
- Joined: Mon Jul 29, 2013 1:27 pm
Re: DS1307 Clock not Working
I am trying to use this on a Pi. I don't see my device (0x68) with i2cdetect. I am pretty sure that the Pi is configured for I2C since I have used I2C to communicate with Arduino.
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: DS1307 Clock not Working
Please post clear, detailed pictures of the DS1307, showing your soldering. Also post pictures showing your connections to the Pitimrossiter wrote:I don't see my device (0x68) with i2cdetect.
- timrossiter
- Posts: 2
- Joined: Mon Jul 29, 2013 1:27 pm
Re: DS1307 Clock not Working
adafruit_support_rick, While waiting for my wife's camera. I did something unusual I read the documentation. Clipped the resisters and bingo I2C.. Your support team may be the best but they can't fix a user how don't listen(read). All the best. Tim
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Please be positive and constructive with your questions and comments.