

But now for my project i want use arduino mega 2560 ... and there are some problem... i have follow your step, cut jumpers etc etc
and test the new contact but both rtc and sd dont't work.
For RTC i have used the your example but the result is 0 0 0 0 0 yesr month day....
i have als triedwith adafruit library RTCDS1307 but the result is the same
For sd i have used your example ( datalogger) i change chipselect 4 with 53 but the result is card is not present

I verify the contact
N°10 -> pin 53
N°11 -> pin 51
N°12 -> pin 50
N°13 -> pin 52
and this is ok.... do you have any idea?
thanks best regard!
ciao ciaooo
Marco