tag:blogger.com,1999:blog-4542176549692404194.post635223021735174734..comments2023-03-18T04:12:28.727-05:00Comments on Projects from Tech: Arduino RTC: TinyRTC v1 with Arduino Mega 2560Matthewhttp://www.blogger.com/profile/07493487402447428879noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-4542176549692404194.post-37290790591100118182014-03-27T09:33:00.708-05:002014-03-27T09:33:00.708-05:00This does seem likely. Sometimes you get what you ...This does seem likely. Sometimes you get what you pay for. I've had other parts from Ebay not live up to expectations.<br /><br /><br /> I have been wanting to go back and test my RTC again. I just haven't had time. Too many other things are ahead of it on the list.Matthewnoreply@blogger.comtag:blogger.com,1999:blog-4542176549692404194.post-53438286833601771262014-03-27T06:44:13.449-05:002014-03-27T06:44:13.449-05:00I've experienced that some samples of the 1307...I've experienced that some samples of the 1307 RTC from ebay doesn't work with battery backup. Other samples do. So it may be a defective RTC in issue here.proton007noreply@blogger.comtag:blogger.com,1999:blog-4542176549692404194.post-62003101200189481302013-08-26T06:22:28.932-05:002013-08-26T06:22:28.932-05:00Well, my experience with Tiny RTC is that Cant kee...Well, my experience with Tiny RTC is that Cant keep time while ardruino is not powered. I have 2 of them and tested with Uno and Mega. Please test this and report if you can.<br /><br />1) sync your TinyRTC to actual time with any method you like. (by code, by Processing, by hand, etc)<br /><br />2) power on and off your arduino proyect several times ( I did 10 times with 10 seconds waiting each step) making sure you are ONLY sync-ing Tiny RTC to arduino clock and NOT resyncing with external source as done in step 1. This test will show you that Tiny RTC has lost several seconds.<br /><br />3) power off your arduino proyect for 15 minutes and reconnect. At this time you surely lost minutes in the Tiny RTC<br /><br />If this is not your experience, please post library you are using and code.<br /><br />Many people are experiencing this.<br /><br />http://zygzax.com/2013/04/22/reloj-con-arduino-y-el-modulo-tiny-rtc-i2c/<br />http://forum.arduino.cc/index.php?topic=177297.0<br /><br />Thanks.Federico Krumnoreply@blogger.com