Comments on: Arduino Dust Sensor https://www.shadowandy.net/2015/05/arduino-dust-sensor.htm Dreams ∙ Passion ∙ Digital World Sun, 10 Sep 2017 14:54:00 +0000 hourly 1 By: Venkat https://www.shadowandy.net/2015/05/arduino-dust-sensor.htm#comment-301636 Sun, 10 Sep 2017 14:54:00 +0000 http://18.142.186.164/wp/?p=6529#comment-301636 Thanks for the tutorial.

I applied the same code with 10k resistor to ground on PIN5 (sensor).

Instead pin 50 and 51 on Mega2560, i have used PIN 40 & 41.
But no variation in the values of the sensor output. The output always seems like below:

PM10 : 0.20 ug/m3
PM10 Count : 0.62 pt/cf
PM2.5 : 0.00 ug/m3
PM2.5 Count: 0.00 pt/cf

Your reply will be appreciated.

]]> By: Andy https://www.shadowandy.net/2015/05/arduino-dust-sensor.htm#comment-301605 Mon, 20 Jun 2016 11:54:00 +0000 http://18.142.186.164/wp/?p=6529#comment-301605 Alex,

Glad to know that tying 10K resistor works better.

For the pinMode, I think you can add in the PM10 declaration, I may have missed out that line when copying the codes over.

]]> By: Alex https://www.shadowandy.net/2015/05/arduino-dust-sensor.htm#comment-301604 Mon, 20 Jun 2016 11:20:00 +0000 http://18.142.186.164/wp/?p=6529#comment-301604 Hi,

With 10k resistor (PIN5 to GND on the sensor) your code works nicely.
I have one question though.
I can see you have pinMode(pin[PM25],INPUT); in the setup, but what about PM10?
Something like:
pinMode(pin[PM25],INPUT);
pinMode(pin[PM10],INPUT);

Thanks
Alex

]]> By: Andy https://www.shadowandy.net/2015/05/arduino-dust-sensor.htm#comment-301598 Mon, 09 May 2016 05:23:00 +0000 http://18.142.186.164/wp/?p=6529#comment-301598 Another nice sensor is the PMS1003. I remember reading that it is a good counter too. 🙂

]]> By: Alfred Loh https://www.shadowandy.net/2015/05/arduino-dust-sensor.htm#comment-301597 Mon, 09 May 2016 04:15:00 +0000 http://18.142.186.164/wp/?p=6529#comment-301597 Hi andy thx for ur reply.
I read articles about adding fan n resistor to ppn42ns to get a data closer to benchmark data. But i think for now i will stick to my sds018 to make a dust duino. 😉

]]> By: Andy https://www.shadowandy.net/2015/05/arduino-dust-sensor.htm#comment-301596 Fri, 06 May 2016 13:31:00 +0000 http://18.142.186.164/wp/?p=6529#comment-301596 I think is because the Shinyei PPD42NS is not as accurate (in terms of particle counting) compared to the SDS018 as the latter is laser based. I actually try to do a average over a time period to normalise the readings.

]]> By: Alfred Loh https://www.shadowandy.net/2015/05/arduino-dust-sensor.htm#comment-301595 Fri, 06 May 2016 01:30:00 +0000 http://18.142.186.164/wp/?p=6529#comment-301595 HI, I plug in your code but using Uno R3. It seems the data fluctuate too much. I cross check with the SDS018 sensor, it is much stable. For eg, PM10 can’t just go from 15.22 to 0.20 then 33.36 again in your data captured. it is too much i think

]]> By: Stefano C https://www.shadowandy.net/2015/05/arduino-dust-sensor.htm#comment-301594 Mon, 04 Apr 2016 12:31:00 +0000 http://18.142.186.164/wp/?p=6529#comment-301594 Hello! Thanks a lot for sharing this nice project! My result are a little low..and i get a lot of zeros..
Anyway, in this interesting blog -indiaairquality.com- there is an interesting solution..add a fan and a resistor between pin5 and ground.. (i think that for ground it takes pin1?).
Thanks again!
Stefano

]]> By: Andrey https://www.shadowandy.net/2015/05/arduino-dust-sensor.htm#comment-301055 Tue, 08 Sep 2015 09:51:07 +0000 http://18.142.186.164/wp/?p=6529#comment-301055 Hi,
Could you provide some explanations for mass concentration calculation?
For example why density = 1.65 ?
What is K = 3531.5?
It will be very helpfull to understant how to swith between pcs/ml to mg/m3
Thanks in advance.

]]> By: Andy https://www.shadowandy.net/2015/05/arduino-dust-sensor.htm#comment-300130 Sat, 08 Aug 2015 01:07:44 +0000 http://18.142.186.164/wp/?p=6529#comment-300130 Ashish,

Thanks. You can get the dust sensor from http://www.aliexpress.com. It is like eBay.

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