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  1. Thanks to everyone. The issue has been solved. It...

    Thanks to everyone. The issue has been solved. It is because the adaptor gradually die. It was working on Teensy 3.2 and Mega yesterday, but when testing the codes today, the first time I got error...
  2. Do we need SPI.begin? I think it is included in...

    Do we need SPI.begin? I think it is included in the SD.h head files. Because I have never added them when working on other board.
  3. Hi defragster, I also tried use 3.3V to power...

    Hi defragster,

    I also tried use 3.3V to power up the adapter, no luck. I really do no think it is the power issue. Because I also use 5 V to power it up on Mega and Teensy 3.2
  4. Hi goc, I have tried to define my spi pins,...

    Hi goc,

    I have tried to define my spi pins, still no luck.
    SPI.setMOSI(11); // Audio shield has MOSI on pin 7
    SPI.setSCK(13); // Audio shield has SCK on pin 14
    SPI.setMISO(12);
  5. Hi WMXZ, I have set the CLK, MISO, MOSI pins,...

    Hi WMXZ,

    I have set the CLK, MISO, MOSI pins, it is still not working.
  6. https://www.amazon.ca/XCSOURCE-Interface-Converter...

    https://www.amazon.ca/XCSOURCE-Interface-Converter-Raspberry-TE775/dp/B074N4J6YN/ref=sr_1_4?keywords=micro+sd+arduino&qid=1551422170&s=electronics&sr=1-4 This is the adapter. I do not think it is the...
  7. I have tested on IDE 1.8.5 and 1.8.6. TeensyDuino...

    I have tested on IDE 1.8.5 and 1.8.6. TeensyDuino is 1.45. I am testing the functionalities of Teensy 3.5 one by one. So I only have MicroSD card adapter on SPI.

    Here is my code, it's pretty...
  8. Thanks for your advice. Good to know that the...

    Thanks for your advice. Good to know that the order of library searching. My SD card works with the built-in slot when CS pin is "BUILTIN_SDCARD". And I did change the CS pins when i move them...
  9. Thanks for your reply. It does not work on Teensy...

    Thanks for your reply. It does not work on Teensy 3.5 when using the standard SPI connecting to external SD card. I have tested on two Teensy 3.5 board and IDEs on different computers. It works great...
  10. External SD card connection on teensy 3.5

    I am a newbie to use the teensy board, so please forgive me if I ask some stupid questions.

    I moved my project from Arduino Mega to Teensy 3.5. Because of the design limitation, I cannot use the...
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