[PlanTower] Laser Dust Sensor pm2.5 PMS7003 with adapter

ตัวอย่างการต่อวงจรและ Code

Required Libraries : 
1. EspSoftwareSerial (https://github.com/plerup/espsoftwareserial)
2. PMS library (https://github.com/fu-hsi/pms)

#include "PMS.h"
#include <SoftwareSerial.h>

EspSoftwareSerial::UART testSerial;


#define RX (21)
#define TX (22)

PMS pms(testSerial);
PMS::DATA data;

void setup()
{
Serial.begin(9600);
testSerial.begin(9600, EspSoftwareSerial::SWSERIAL_8N1, RX, TX, false, 95, 11);
}

void loop()
{
if (pms.read(data))
{
Serial.print("PM 1.0 (ug/m3): ");
Serial.println(data.PM_AE_UG_1_0);

Serial.print("PM 2.5 (ug/m3): ");
Serial.println(data.PM_AE_UG_2_5);

Serial.print("PM 10.0 (ug/m3): ");
Serial.println(data.PM_AE_UG_10_0);

Serial.println();
}

// Do other stuff...
}

Specifications:

• Power Supply : DC 5V
• Measuring Range : 0.3~1.0；1.0~2.5；2.5~10 μm
• Maximum Range （PM2.5 standard ) : ≥1000 μg/m³
• Effective Range（PM2.5 standard) : 0~500 μg/m³
• Resolution : 1 μg/m³
• Total Response Time : ≤10 Second
• Output : UART

Main characteristics

• Zero false alarm rate
• Real-time response
• Correct data
• Minimum distinguishable particle diameter :0.3 micrometer
• High anti-interference performance because of the patent structure of six sides shielding
• Optional direction of air inlet and outlet in order to adapt the different
  design
• Very Slim

PIN1 VCC Positive power 5V
PIN2 VCC Positive power 5V
PIN3 GND Negative power
PIN4 GND Negative power
PIN5 RESET Module reset signal /TTL level@3.3V，low reset.
PIN6 NC
PIN7 RX Serial port receiving pin/TTL level@3.3V
PIN8 NC
PIN9 TX Serial port sending pin/TTL level@3.3V
PIN10 SET Set pin /TTL level@3.3V，high level or suspending is normal working status, while low level is sleeping mode.

Output result

Mainly output as the quality and number of each particles with different size per unit volume, the unit volume of particle number is 0.1L and the unit of mass concentration is μ g/m³.

There are two options for digital output: passive and active. Default mode is active after power up. In this mode sensor would send serial data to the host automatically .

The active mode is divided into two sub-modes: stable
mode and fast mode. If the concentration change is small the sensor would run at stable mode with the real interval of 2.3s.And if the change is big the sensor would be changed to fast mode automatically with the interval of 200~800ms, the higher of the concentration, the shorter of the interval.