Thanks guys, I figured many things out but I still can't make it work :c
I followed this to find what to plug where:
I got:
NodeMCU -> MicroSd Adapter
SCK -> GPIO14 (D5)
MISO -> GPIO12 (D6)
MOSI -> GPIO13 (D7)
CS -> GPIO15 (D8)
VCC -> VU (USB power output - 5V?)
GND -> GND
I don't have Voltmeter but when I plugged VU into the diode, it lighted like crazy. So I guess, 5V?
I also added this to my code:
const int chipSelect = 15;
Still, it just doesn't work.. What else might be the problem?