https://github.com/karser/karserdsm501

Arduino library for DSM501 dust sensor
https://github.com/karser/karserdsm501

air-pollution air-quality arduino arduino-library arduino-nano dsm501a dust-sensor

Last synced: 9 days ago
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Arduino library for DSM501 dust sensor

• Host: GitHub
• URL: https://github.com/karser/karserdsm501
• Owner: karser
• Created: 2021-02-20T17:04:53.000Z (over 3 years ago)
• Default Branch: master
• Last Pushed: 2021-02-20T17:29:08.000Z (over 3 years ago)
• Last Synced: 2024-10-11T13:12:46.526Z (about 1 month ago)
• Topics: air-pollution, air-quality, arduino, arduino-library, arduino-nano, dsm501a, dust-sensor
• Language: C++
• Homepage:
• Size: 1000 Bytes
• Stars: 3
• Watchers: 2
• Forks: 1
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# Arduino library for DSM501 dust sensor

### Example

```

#define DUST_SENSOR_PIN_PM10  3  //Must be the pins that

#define DUST_SENSOR_PIN_PM25  2  //support interrupts

#define INTERVAL_COUNTDOWN 1000

#define INTERVAL_READ 30000

#include 

// ISRs forward declaration

void pm10_handleInterrupt();

void pm25_handleInterrupt();

// init pm10 and pm25 instances

KarserDSM501 pm10(DUST_SENSOR_PIN_PM10, pm10_handleInterrupt);

KarserDSM501 pm25(DUST_SENSOR_PIN_PM25, pm25_handleInterrupt);

// handle ISRs

void pm10_handleInterrupt() { pm10.handleInterrupt(); }

void pm25_handleInterrupt() { pm25.handleInterrupt(); }

unsigned long timer = 0;

void setup() {

  Serial.begin(9600);

}

void loop() {

  if (!pm10.isReady() && (millis() >= timer + INTERVAL_COUNTDOWN)) {

    Serial.println("DSM501 warm up: " + String(pm10.getReadyCountdown()));

    timer += INTERVAL_COUNTDOWN;

  } else if (millis() >= timer + INTERVAL_READ) {

    timer += INTERVAL_READ;

    Serial.println("pm10: "+String(pm10.readPM())+" pm2.5: "+String(pm25.readPM()));    

  }

}

```

Here is the console output

```

18:53:40.791 -> DSM501 warm up: 59

...

18:54:36.845 -> DSM501 warm up: 3

18:54:37.841 -> DSM501 warm up: 2

18:54:38.837 -> DSM501 warm up: 1

18:54:39.832 -> DSM501 warm up: 0

18:55:09.855 -> pm10: 21.39 pm2.5: 6.65

18:55:39.872 -> pm10: 20.31 pm2.5: 5.57

18:56:09.897 -> pm10: 28.64 pm2.5: 7.07

18:56:39.920 -> pm10: 17.89 pm2.5: 6.92

18:57:09.940 -> pm10: 25.84 pm2.5: 7.86

18:57:39.937 -> pm10: 23.35 pm2.5: 6.83

18:58:09.959 -> pm10: 29.80 pm2.5: 6.84

18:58:39.980 -> pm10: 18.68 pm2.5: 6.98

18:59:10.003 -> pm10: 27.84 pm2.5: 7.54

```