Hi,
I'm watching the :

that used a Arduino with SD card, I don't have SD card handy, can I use just a Arduino without SD card? what can be? run slow or totally can't run?
Thanks
Adam

 

I am trying very hard to be kind and considerate with my answer. The best I can do is:
After wasting 7 1/2 minutes watching a very boring video with barely discernible sound, I have no idea whether he is using an SD card, or what he might be using it for. From your question, the only conclusion I can come to is that you do not understand anything about his project.

 

I am trying very hard to be kind and considerate with my answer. The best I can do is:
After wasting 7 1/2 minutes watching a very boring video with barely discernible sound, I have no idea whether he is using an SD card, or what he might be using it for. From your question, the only conclusion I can come to is that you do not understand anything about his project.

Thank you for your time.
It's true, he didn't mention about SD card anywhere, even in the code.
There do has a declaration： #include "sdCard.h" and then disabled: //sdCard::setupSdCard();
I guess he didn't use SD card.