Sorry I am new in Arduino and too old man (55). About the lite laser ringe finder I include a buzzer but not use a servo and serial monitor count till 180 and alarm began
I want to detect movement and sign…I´m going crazy. Can you help me?. Thanks in advance.
The code that I use is:
#include <Wire.h>
#define LIDARLite_ADDRESS 0x62 // Default I2C Address of LIDAR-Lite.
#define RegisterMeasure 0x00 // Register to write to initiate ranging.
#define MeasureValue 0x04 // Value to initiate ranging.
#define RegisterHighLowB 0x8f // Register to get both High and Low bytes in 1 call.
#define Buzzer 2
#include <Servo.h>
Servo myservo;
int pos = 0; // Position of the servo (degress, [0, 180])
int distance = 0; // Distance measured
int alertDistance = 200;
void setup()
{
// Serial output
Serial.begin(9600);
Serial.println("< START >");
// Servo control
myservo.attach(5);
// LIDAR control
Wire.begin(); // join i2c bus
pinMode(Buzzer, OUTPUT);
}
// Get a measurement from the LIDAR Lite
int lidarGetRange(void)
{
int val = -1;
Wire.beginTransmission((int)LIDARLite_ADDRESS); // transmit to LIDAR-Lite
Wire.write((int)RegisterMeasure); // sets register pointer to (0x00)
Wire.write((int)MeasureValue); // sets register pointer to (0x00)
Wire.endTransmission(); // stop transmitting
delay(20); // Wait 20ms for transmit
Wire.beginTransmission((int)LIDARLite_ADDRESS); // transmit to LIDAR-Lite
Wire.write((int)RegisterHighLowB); // sets register pointer to (0x8f)
Wire.endTransmission(); // stop transmitting
delay(20); // Wait 20ms for transmit
Wire.requestFrom((int)LIDARLite_ADDRESS, 2); // request 2 bytes from LIDAR-Lite
if(2 <= Wire.available()) // if two bytes were received
{
val = Wire.read(); // receive high byte (overwrites previous reading)
val = val << 8; // shift high byte to be high 8 bits
val |= Wire.read(); // receive low byte as lower 8 bits
}
return val;
}
void serialPrintRange(int pos, int distance)
{
Serial.print("Position (deg): ");
Serial.print(pos);
Serial.print("\t\tDistance (cm): ");
Serial.println(distance);
}
void loop()
{
for(pos = 0; pos <= 180; pos += 1)
{
distance = lidarGetRange();
serialPrintRange(pos, distance);
delay(20);
}
for(pos = 180; pos>=0; pos-=1)
{
myservo.write(pos);
distance = lidarGetRange();
serialPrintRange(pos, distance);
delay(20);
if (distance <= alertDistance){
serialPrintRange(pos, distance);
Serial.print("ALERT");
digitalWrite(Buzzer, HIGH);
delay (20);
digitalWrite(Buzzer, LOW);
}
}
}So sorry.
I´m not use servo but included it to future projects.
As long as you are curious and dedicated you should have a fun ride into the world of embedded software & systems! 