Hello everyone! I'm having a strange problem using the Arduino Module RFID-RC522 with NodeMCU. The module was working perfectly at the protoboard, and I decided to make a definitive board using an Universal PCB drilled, and the project stoped to work. After several tests I discovered that the problem wasn't a connection problem, because when the communication wasn't working it was warned at the Serial Monitor, which wasn't happening. In addition, the RFID worked when I put it at the protoboard, and used jumpers to connect the module at where it should be on the Universal Board. So, I have no idea about what's happening, and how I could test ou fix it.