LED Maestro
Senior Member
Hey all,
Many months ago I asked a question about programming and reading a DS1307 RTC module and got great help and my clock working. However, after not using the circuit for at least 4 months, I find that when I come to check its still working, I get a constant square wave o/p from the RTC and when I reprogram and debug it, the mins and hours variables are stuck at 255 and the seconds keep changing from 209 to 255.
I am using this circuit as part of my final year project at college and I'm extremely upset to see it not working now.
Any advice is greatly appreciated.
P.S. I am using a Picaxe28X2, SDA and SCL have appropriate pull-up resistors, DS1307 has a new 3V battery for backup, in other words nothing has changed on the board since I last used it
Many months ago I asked a question about programming and reading a DS1307 RTC module and got great help and my clock working. However, after not using the circuit for at least 4 months, I find that when I come to check its still working, I get a constant square wave o/p from the RTC and when I reprogram and debug it, the mins and hours variables are stuck at 255 and the seconds keep changing from 209 to 255.
I am using this circuit as part of my final year project at college and I'm extremely upset to see it not working now.
Any advice is greatly appreciated.
P.S. I am using a Picaxe28X2, SDA and SCL have appropriate pull-up resistors, DS1307 has a new 3V battery for backup, in other words nothing has changed on the board since I last used it