Problems with multiple SD card about sdfat HOT 3 OPEN

I have no idea. You say:

"Connection are good i check with tester and the first SD card initialize and write"

but all these errors look like wiring/ hardware problems.

from sdfat.

I solved the problem of strange chars.

Instead of writing every 250ms i concatenate the string and write the data in SD every 10 GPS points.
if (_strTempSDcardData != "0;") { if (val == 10) { _newInsert = false; digitalWrite(PINOUT, HIGH); _myFile = _sd.open(_nameFile, O_WRITE | O_APPEND | O_CREAT); _myFile.print(myS); _myFile.close(); delay(500); val = 0; myS = ""; } else { myS += _strTempSDcardData; val++; } }

Wiring seems ok but i think are too long and to much noise for access SD every 250ms? Could this be the cause of the failure of the other cards to initialize?

from sdfat.

Wiring seems ok but i think are too long and to much noise for access SD every 250ms? Could this be the cause of the failure of the other cards to initialize?

I really can't guess what causes hardware problems without being able to put a scope or logic analyzer on the SD card.

from sdfat.