ESP8266 nodemcu communication failure with MFRC522 RFID module

[sripathi_bhat]

I am using NodeMCU ESP8266 with MFRC522 RFID module. Getting below error when using DumpInfo example from RFID_MFRC522v2.
WARNING: Communication failure, is the MFRC522 properly connected?

Connection setting are as follows -
NodeMCU - MFRC522

D3 - RST
3V3 - 3.3V
D8 - SDA (Tried with D4 - SDA as well, didn't work)
D5 - SCK
D6 - MISO
D7 -MOSI
GND - GND

IRQ on MFRC522 is not connected to any pin on NodeMCU

I tried with 2 other MFRC522 RFID modules and 1 other NodeMCU board, getting the same error. I have already gone through troubleshooting for this error from github - GitHub - OSSLibraries/Arduino_MFRC522v2, nothing has worked so far.

NodeMCU is connected to my MAC OS through micro USB. I have tried using breadboard as well. Arduino IDE - 2.2.1

Code below -

#include <MFRC522.h>
#include <SPI.h>
#define RST_PIN D3           // Configurable, see typical pin layout above
#define SS_PIN D8          // Configurable, see typical pin layout above
MFRC522 mfrc522(SS_PIN, RST_PIN);  // Create MFRC522 instance
void setup() {
  Serial.begin(115200);
  Serial.println("Hello");                       // Initialize serial communications with the PC
  while (!Serial);                       // Do nothing if no serial port is opened (added for Arduinos based on ATMEGA32U4)
              SPI.begin();                             // Init SPI bus
              mfrc522.PCD_Init();              // Init MFRC522
              delay(1000);                                             // Optional delay. Some board do need more time after init to be ready, see Readme
              mfrc522.PCD_DumpVersionToSerial();      // Show details of PCD - MFRC522 Card Reader details
              Serial.println(F("Scan PICC to see UID, SAK, type, and data blocks..."));
}
void loop() {
  // Reset the loop if no new card present on the sensor/reader. This saves the entire process when idle.
  if ( ! mfrc522.PICC_IsNewCardPresent()) {
              return;
  }
  // Select one of the cards
  if ( ! mfrc522.PICC_ReadCardSerial()) {
              return;
  }
  // Dump debug info about the card; PICC_HaltA() is automatically called
  mfrc522.PICC_DumpToSerial(&(mfrc522.uid));
}

Screenshot of the connection from MAC - NodeMCU - MFRC522

Any help would be appreciated.

Thanks

[ruilviana]

@sripathi_bhat

MFRC522

Hth
" RFID RC522 com ESP8266 • Manual do Maker

PS: ops is in Portuguese. Use google translate....

or
" https://www.instructables.com/MFRC522-RFID-Reader-Interfaced-With-NodeMCU/