A
Arduino•2mo ago
abim

RPLIDAR C1 Not Detected on Arduino Mega

I am trying to use RPLIDAR C1 directly to Arduino Mega via UART communication (Serial2). 
#include <RPLidar.h>
RPLidar lidar;

void setup() {
  Serial.begin(115200);
  Serial2.begin(460800); // RX2 = 17, TX2 = 16
  delay(1000);

  Serial.println("Mencoba deteksi RPLIDAR...");
  if (lidar.begin(Serial2)) {
    Serial.println("RPLIDAR Terdeteksi ✅");
    lidar.startScan();
  } else {
    Serial.println("❌ Gagal mendeteksi RPLIDAR");
  }
}

void loop() {
  if (IS_OK(lidar.waitPoint())) {
    float d = lidar.getCurrentPoint().distance;
    float a = lidar.getCurrentPoint().angle;
    Serial.printf("Jarak: %.2f mm, Sudut: %.2f°\n", d, a);
  }
}
#include <RPLidar.h>
RPLidar lidar;

void setup() {
  Serial.begin(115200);
  Serial2.begin(460800); // RX2 = 17, TX2 = 16
  delay(1000);

  Serial.println("Mencoba deteksi RPLIDAR...");
  if (lidar.begin(Serial2)) {
    Serial.println("RPLIDAR Terdeteksi ✅");
    lidar.startScan();
  } else {
    Serial.println("❌ Gagal mendeteksi RPLIDAR");
  }
}

void loop() {
  if (IS_OK(lidar.waitPoint())) {
    float d = lidar.getCurrentPoint().distance;
    float a = lidar.getCurrentPoint().angle;
    Serial.printf("Jarak: %.2f mm, Sudut: %.2f°\n", d, a);
  }
}
However, every time I upload the program, the following output always appears: 
❌ Gagal mendeteksi RPLIDAR
❌ Gagal mendeteksi RPLIDAR
No description
4 Replies
pseud0
pseud0•2mo ago
And you already tried swapping the TX and RX wires in hardware?
abim
abimOP•2mo ago
I have already swapped it
pseud0
pseud0•2mo ago
pseud0
pseud0•2mo ago
I actually don't understand your code. What library version are you using exactly? The lidar.begin() function does not return bool. Looking at https://github.com/DanCrank/rplidar_arduino/blob/master/RPLidarDriver/RPLidar.h.

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