I have put together a 24 hour clock to put in my radio shack with a DMD (dot matrix display) from Freetronics a Uno and a TinyRTC I bought off eBay.
Problem is the clock gains about 1.5 minutes a day. I know its not a lot of gain but I would like to make it as accurate as possible.
I am not sure if its the programming or there is a problem with the RTC.
I have included the sketch if someone would like to have a look and tell me where I have gone wrong.
Any help would be appreciated.
_24_hour_clock_v2.ino (12 KB)