So i'm making a human presence detection using the DFRobot SEN0395 sensor with the Arduino Pro Micro. I'm using the included Example program on the "DFRobot_mmwave_Radar.h"
#include <SoftwareSerial.h>
#include "DFRobot_mmWave_Radar.h"
SoftwareSerial mySerial(3, 2); //RX,TX
DFRobot_mmWave_Radar sensor(&mySerial);
int ledPin = 13;
void setup()
{
Serial.begin(9600);
mySerial.begin(115200);
pinMode(ledPin, OUTPUT);
sensor.factoryReset(); //Restore to the factory settings
sensor.DetRangeCfg(0, 9); //The detection range is as far as 9m
sensor.OutputLatency(0, 0);
}
void loop()
{
int val = sensor.readPresenceDetection();
digitalWrite(ledPin, val);
Serial.println(val);
}
When i tried it on an UNO there're outputs but they were Janky and kinda broken cause i faced the sensor to the other side the data keep reading it was high even though there is no one.
i dont think it's the baud rate problem. According to the Wiki the default baud rate is 115200 and when i change it, it won't work. I'm trying another Library with much simpler way to use.
#include <DFR_Radar.h>
// Serial1 is the hardware UART pins
DFR_Radar sensor( &Serial1 );
void setup()
{
Serial.begin( 9600 );
// The DFRobot device is factory-set for 115200 baud
Serial1.begin( 115200 );
// Restore to the factory settings -- it's not necessary to do this unless needed
sensor.factoryReset();
// Set a detection range of 0 to 1 meter (9.45m is the maximum)
sensor.setDetectionRange( 0, 1 );
// Lower the sensitivity so that it's easier to test
sensor.setSensitivity( 2 );
// This will cause the LED to turn on 1 second after presence is detected and
// it will stay on for 5 seconds after the sensor no longer detects presence.
// Set both of these to 0 for instant on/off, although you may get short-cycling.
sensor.setOutputLatency( 1, 5 );
// Setup the built-in LED
pinMode( LED_BUILTIN, OUTPUT );
}
void loop()
{
/**
* NOTE: if you use any `delay()` here, the
* more of them plus the longer they are,
* the more likely the presence events will
* be missed.
*/
// Query the presence detection status
bool presence = sensor.checkPresence();
// If presence == true, turn on the built-in LED.
digitalWrite( LED_BUILTIN, presence );
// Your serial monitor will show constant 1's or 0's depending
Serial.println( presence );
}
The Terminal said that the Serial1 was not declared. I've tried to change it but the error message still same.
Serial1 is only available of hardware that has more than 1 hardware serial port. An Uno only has 1 - Serial. If you get a Mega 2560, it has 4, Serial, Serial1, Serial2, and Serial3.
which brings up back to the original help - use a different board.
