Nice that they actually made it compatible with the Mega, I have taken the time to modify a similar generic board that used the D11/D12/D13 & A4/A5 pins so know what that's like. The RTC is a PCF8523, which is not as accurate as the DS3231, and the battery used is the less common CR1220. If the OP is looking at Adafruit Data Logging Shield it is made to use the ICSP pins and SCL/SDA header pins (as opposed to the A4/A5 header pins), so should work with a Mega without modification. At very least, Ada's board would need to use the ICSP pins, and it probably doesn't. This is because both the SPI and I2C busses use different pins on a Mega and are not in the reach of a Uno board. If not, it is probably more trouble than it is worth, and you are a lot better off making your own on a Mega proto board. IF the Adafruit shield is specifically made for Mega, and thereby not compatible with Uno, AND it has a DS3231 on board, go for it. Schnelle Lieferung ✓ Große Auswahl an %brandid% Produkten » Jetzt einfach bestellen: %product-title% Sorry for the german: %product-title% kaufen Hopefully you can help me, I could not find a proper working example on this forum for Mega, and could not understand the SDfat library, which is also suggested. Is the voltage regulator on the shield maybe only for the power and not for the com-pins? If that is the case I probably broke it, but cant see the connections on the shield. What am I doing wrong, is it the wiring or software? Can provide the schematic for this if requested. More stuff was attached to the Arduino (LED, Sensor, etc) but that was also the case when it worked.
I also tried pin 10 and 53, but that made no difference. I did put pinmode and digitalwrite correct as discussed in previous posts. I did format it with the formatting tools form the sticky. other pins where 50,51,52 as mentioned in previous posts. Now even the CardInfo and Datalogger examples are not working.
I did rewire it because i needed to put it in a box but i am certain that this is correct, as I made a schematic overview of it before disassemble. The weird thing is that i got it working fine after some troubles and now it just completely stops working. SD card is microSD16GB via microSD to SD adapter. (Linked) I could not find this in the documentation but i think the small device i see is the regulator. I have an Arduino Mega and an SD-shield with an voltage regalutor. I know i am not the first person with the problem, but I cant figure it out.
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