Next generation dust sensor for MySensors

[alowhum]

Is this is the Honeywell you're talking about: HPMA115S0
https://www.aliexpress.com/item/PM2-5-sensor-HONEYWELL-HPMA115S0-XXX-laser-pm2-5-air-quality-detection-sensor-module-Super-dust/32829242280.html

From looking at the datasheet there are some other downsides:

• 1,25mm molex connector (so not as easy to connect to as the SDS011, which takes normal Dupont wires)
• Doesn't send data by itself? See this thread.
• Precision seems poorer than the Chinese models (although they may just be more honest?). +-15ug at levels below 100, while the Chinese sensors claim +-10 below 50.
• Can't find anything about it being 5v tolerant.

What does look good is the estimated life of the laser, 20.000 years. That's 7 years if you use it 8 hours a day.

[NeverDie]

@alowhum said in Next generation dust sensor for MySensors:

Is this is the Honeywell you're talking about: HPMA115S0
https://www.aliexpress.com/item/PM2-5-sensor-HONEYWELL-HPMA115S0-XXX-laser-pm2-5-air-quality-detection-sensor-module-Super-dust/32829242280.html

yes

[NeverDie]

BTW, I hooked up the Honeywell, and this is the total amount of what it displays:

PS- Reading Particle Measurements...
PS- Sending cmd: 68 1 4 93 
PS- Waiting for cmd resp...
PS- Received valid data!!!
PM 2.5: 3 ug/m3
PM 10: 4 ug/m3

It shows less for PM2.5 and PM10 than the PMS5003. I presume the numbers are more trustworthy, though, since it was factory calibrated.

[subs]

Hi. I am late here but i will ask anyways. So what is the review between PMS7003 and Honeywell HPM sensors?
I'd like to build a low cost opensource AQI device for Indian cities with added temperature, humidity and ambient pressure data and then send it to cloud using GPRS/GSM or Wifi (esp8266 as MCU). But i am confused about the Honeywell HPM sensor - its accuracy as compared to BAM or other PM measurement standards. Any help will be great!

[Sebex]

@NeverDie could you share your Honeywell code, I have trouble getting it to work. An example will help me a lot t learn from!

[NeverDie]

@Sebex Hi, I had looked into this for the purpose of testing the effectiveness of air filtration on a 3D printer enclosure. Unfortunately, for lack of effective, yet quiet, filtration at the time, I shelved the project until a future date and so didn't keep the files. However, I'm pretty sure there were libraries for the sensor on github, so I recommend you look there. Good luck!

[Nca78]

@Sebex said in Next generation dust sensor for MySensors:

@NeverDie could you share your Honeywell code, I have trouble getting it to work. An example will help me a lot t learn from!

I made a library for that, I'm updating it to autodetect some various PM, CO2, Formaldehyde UART sensors but I'll find the old version for Honeywell only tomorrow if you want. If I forget, harass me by MP :D

[skywatch]

@Nca78 Do you have any updates on the sensor you were building or the Honeywell code?

I am thinking of moving the existing sensor to another room and getting a new noe for the bedroom.

[Nca78]

Hello @skywatch, I will put a library online today. Sorry for the long delay.

[Nca78]

@skywatch here you go :
https://github.com/Nca78/NcaPMSensorLight

@Sebex in case you're still looking for a code, you might be interested.

[skywatch]

@Nca78 Thanks :)

I didn't purchase another sensor yet, but will in the furure for sure. Thanks for sharing it will help a lot of people I expect (not just me)! ;)

[mfalkvidd]

https://www.bosch-sensortec.com/products/environmental-sensors/particulate-matter-sensor/bmv080/ could be the next generation. No moving parts. Measures PM2.5. Datasheet: https://www.bosch-sensortec.com/media/boschsensortec/downloads/product_flyer/bst-bmv080-fl000.pdf