ArduinoLoRa

LoRaReceiver.ino

#include <SPI.h>
#include <LoRa.h>
// Example By ArduinoAll
void setup() {
  Serial.begin(9600);
  while (!Serial);
  Serial.println("LoRa Receiver");
  if (!LoRa.begin(433E6)) {
    Serial.println("Starting LoRa failed!");
    while (1);
  }
}
void loop() {
  // try to parse packet
  int packetSize = LoRa.parsePacket();
  if (packetSize) {
    // received a packet
    Serial.print("Received packet '");
    // read packet
    while (LoRa.available()) {
      Serial.print((char)LoRa.read());
    }
    // print RSSI of packet
    Serial.print("' with RSSI ");
    Serial.println(LoRa.packetRssi());
  }
}

LoRaSender.ino

#include <SPI.h>
#include <LoRa.h>
// Example By ArduinoAll
int counter = 0;

void setup() {
  Serial.begin(9600);
  while (!Serial);
  Serial.println("LoRa Sender");
  if (!LoRa.begin(433E6)) {
    Serial.println("Starting LoRa failed!");
    while (1);
  }
}
void loop() {
  Serial.print("Sending packet: ");
  Serial.println(counter);
  // send packet
  LoRa.beginPacket();
  LoRa.print("hello ");
  LoRa.print(counter);
  LoRa.endPacket();
  counter++;
  delay(5000);
}

I compiled and flashed LoRaReceiver.ino onto a TTGO LoRa32 v_1.6.1 board, "T3_V1.6.1" printed on the LoRa side of the board and I always get "Starting LoRa failed!" What do I do now? I know the board is good because I can put Meshtastic on it and everything is good.

Works great! I just changed default ports:
LoRa.setPins(33, 32, 35); // NSS, RST, DIO0