Hc522 blocks serial comm

Other Hardware Sensors
1

I have the hc522 rfid reader hooked up like so:

SDA------------------------Digital 10

SCK------------------------Digital 13

MOSI----------------------Digital 11

MISO----------------------Digital 12

IRQ------------------------unconnected

GND-----------------------GND

RST------------------------Digital 9

3.3V------------------------3.3V

When I go to power up the nano with the usb cable hooked to the computer the port of the usb does not come up, which is different if I plug in the nano without the wires hooked up ton the rc522.

Any ideas why?

2

I just found that when 3.3v and ground are hooked up the arduino port goes missing and I cant upload any code.

3

It looks like you have a broken hc522 reader. Check with a multi-meter, probably you have a short circuit on the board.

4

Yes in fact 3.3v and gnd are shorted. Thanks.