![]() ![]() IMO when a system develops unexplained/random faults, especially in a system that is well ordered as in computer programming, I look first to the power supply. Serial.println("error opening txt-File") MyFileAcc.println(accelBuffer,4) // this is a float MyFileAcc = SD.open("example.txt", FILE_WRITE) Serial.println("Card failed, or not present") If (micros () - last_us > PERIOD) // PERIOD = 25000. SD-Card Module : DEBO MICROSD 2 DEBO MICROSD 2: Developer boards - breakout board for microSD cards at reichelt elektronik.I don't know what the issue could be but I need it fixed, especially when future test will take a lot longer. All of the sudden the program fails to open the card at some point during the test. The first like 15 times it worked perfectly during the whole duration of the test (around 100 seconds). ![]() In my project, I am writing data from an accelerometer on a SD card.
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