Example Code for FireBeetle ESP8266-Human Presence Detection

Hardware Preparation

• FireBeetle ESP8266 IoT Microcontroller (or similar) x 1
• mmWave Radar x1

Software Preparation

• Arduino IDE
• Download and install the DFRobot_mmWave Radar Library. (About how to install the library?)

Wiring Diagram

Sample Code

/*!
   @file DFRobot_mmWave_Radar.ino
   @ Detect if there is object or human motion in measuring range; Allows for configuring sensing area, sensor output delay, and resetting sensor to factory settings.
   @n Experimental phenomenon: When the sensor is enabled, print 0 or 1 on the serial port: 0 for no motion detected in the sensing area, 1 for object/human movement detected. 
   @copyright   Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
   @licence     The MIT License (MIT)
   @version  V1.0
   @date  2023-3-13
   @https://github.com/DFRobot
*/

#include <SoftwareSerial.h>
#include <DFRobot_mmWave_Radar.h>

int LED_BLINK = 2;

SoftwareSerial mySerial(D2, D5);
DFRobot_mmWave_Radar sensor(&mySerial);

void setup() {
  Serial.begin(115200);
  mySerial.begin(115200);
  pinMode(LED_BLINK, OUTPUT);

  sensor.factoryReset();       //Reset to factory settings
  sensor.DetRangeCfg(0, 9);    //Set sensing distance, up to 9m 
  sensor.OutputLatency(0, 0);  //Set output delay 
}

void loop() {
  int val = sensor.readPresenceDetection();
  digitalWrite(LED_BLINK, val);
  Serial.println(val);
  delay(1000);
}

Result

Print "1" if human presence is detected, otherwise, print "0".