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[ConligWX]

Hey brian, here is one for you in the future.

PurpleAir sensors. the Temp/Humidity/Pressure sensor is a BME280.

i have just replace the BME280 with the new Adafruit BME680 which adds VOC gas sensor too. dont know if you want to add this to one of the modules or not, but if you do you can test against my json file. look for "Voc:" value.

https://www.purpleair.com/json?show=5876

Experimental map is here:

https://www.purpleair.com/map?opt=1/mVO ... 634/-6.364

Code: Select all

{
	"mapVersion": "0.10",
	"baseVersion": "7",
	"mapVersionString": "",
	"results": [
		{
			"ID": 5876,
			"Label": "Conlig",
			"DEVICE_LOCATIONTYPE": "outside",
			"THINGSPEAK_PRIMARY_ID": "401562",
			"THINGSPEAK_PRIMARY_ID_READ_KEY": "O0RXREU8ZI26NADF",
			"THINGSPEAK_SECONDARY_ID": "401564",
			"THINGSPEAK_SECONDARY_ID_READ_KEY": "LNTSYD0WYTIV1CG3",
			"Lat": 54.634158,
			"Lon": -5.672035,
			"PM2_5Value": "20.69",
			"LastSeen": 1590702401,
			"Type": "PMS5003+PMS5003+BME280",
			"Hidden": "false",
			"DEVICE_BRIGHTNESS": "15",
			"DEVICE_HARDWAREDISCOVERED": "2.0+OPENLOG+15833 MB+DS3231+BME680+PMSX003-B+PMSX003-A",
			"Version": "6.01",
			"LastUpdateCheck": 1590701197,
			"Created": 1515703378,
			"Uptime": "94923",
			"RSSI": "-66",
			"Adc": "0.02",
			"p_0_3_um": "2696.95",
			"p_0_5_um": "741.39",
			"p_1_0_um": "116.36",
			"p_2_5_um": "8.95",
			"p_5_0_um": "3.39",
			"p_10_0_um": "0.64",
			"pm1_0_cf_1": "14.58",
			"pm2_5_cf_1": "20.69",
			"pm10_0_cf_1": "23.73",
			"pm1_0_atm": "14.58",
			"pm2_5_atm": "20.69",
			"pm10_0_atm": "23.73",
			"isOwner": 0,
			"humidity": "54",
			"temp_f": "64",
			"pressure": "1025.01",
			"AGE": 1,
			"Stats": "{\"v\":20.69,\"v1\":23.58,\"v2\":21.99,\"v3\":18.93,\"v4\":11.65,\"v5\":7.59,\"v6\":8.07,\"pm\":20.69,\"lastModified\":1590702401076,\"timeSinceModified\":120077}"
		},
		{
			"ID": 5877,
			"ParentID": 5876,
			"Label": "Conlig B",
			"THINGSPEAK_PRIMARY_ID": "401565",
			"THINGSPEAK_PRIMARY_ID_READ_KEY": "EG0C2U6YJWDXHZCM",
			"THINGSPEAK_SECONDARY_ID": "401566",
			"THINGSPEAK_SECONDARY_ID_READ_KEY": "8EJZ462T7ZMQGRP7",
			"Lat": 54.634158,
			"Lon": -5.672035,
			"PM2_5Value": "21.21",
			"LastSeen": 1590702401,
			"Hidden": "false",
			"Created": 1515703378,
			"Adc": "0.03",
			"p_0_3_um": "2948.48",
			"p_0_5_um": "795.19",
			"p_1_0_um": "108.21",
			"p_2_5_um": "6.17",
			"p_5_0_um": "2.03",
			"p_10_0_um": "0.59",
			"pm1_0_cf_1": "15.93",
			"pm2_5_cf_1": "21.21",
			"pm10_0_cf_1": "22.86",
			"pm1_0_atm": "15.93",
			"pm2_5_atm": "21.21",
			"pm10_0_atm": "22.86",
			"Voc": 61.0,
			"isOwner": 0,
			"humidity": "54",
			"temp_f": "64",
			"pressure": "1025.01",
			"Voc": 61.0,
			"AGE": 1,
			"Stats": "{\"v\":21.21,\"v1\":23.65,\"v2\":21.97,\"v3\":18.99,\"v4\":11.78,\"v5\":7.71,\"v6\":8.15,\"pm\":21.21,\"lastModified\":1590702401076,\"timeSinceModified\":120076}"
		}
	]

[weatherist34]

good morning Simon its a work in progress perhaps during this lockdown weekend it will get finished ..needs to add a color scale to VOC(Gas) and add a conversion to temperature to use either F or C

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[ConligWX]

Hi Brian, thats great.

just some info, then new sensor can replace the old one, or you can attach the 680 to the 280 and have two sensors working. in the JSON file you should see BME280 or BME680 as the sensor usually. I am guessing that if both are attached you will see both listed in the file.

there are only about 8 BME680's fitted world wide so far, I will check the others and get back to you.

[ConligWX]

yes these two stations have both sensors fitted:

https://www.purpleair.com/json?show=51059

https://www.purpleair.com/json?show=49393

[weatherist34]

ok Simon if you would drop me an email overnight I will send you two files in the morning to just simply upload .it works off the basis the purple hardware is set to yes in the setup screen.if no then no small icon purple appears.

not going to go to far with this as you quoted only 8 users worldwide . if the interest goes up then ill refine it but it works and tested with your user ID .

2ndpa.png (177.66 KiB) Viewed 4640 times

[ConligWX]

Ok thanks Brian. The VOC sensor is experiemental, but from what Adrian has said in the past he will most likely fit the BME680 as standard in the future as this is another "air quality" measurement that PurpleAir can use.

[weatherist34]

Good morning Simon

I have added the Purple Air option screen to the simple update , I was also able to use Grahams(Ringwood UK) data also has his purple air has no VOC capability so the fallback is a simple N/A display as shown below .this makes the optional screen available to use for all purple air hardware owners as shown below. if you need chart data for purple air it has been there for many months as an option as shown below.

simple update 30-05-2020 via https://weather34.com/homeweatherstatio ... alone.html

paII-MAY.png (408.52 KiB) Viewed 4618 times

[ConligWX]

VOC working as shown here:

Capture (Small) (1).JPG (58.89 KiB) Viewed 4608 times

[weatherist34]

i think the some research or reading needs doing on the scale factor for VOC obviously very different from pm scaling .

i.e what VOC reading is in the safe limit to what is deemed as concern,dangerous,life threatening etc..

[ConligWX]

i think the some research or reading needs doing on the scale factor for VOC obviously very different from pm scaling .

i.e what VOC reading is in the safe limit to what is deemed as concern,dangerous,life threatening etc..

yes indeed. this is a "new" type of data for us weather enthusiasts and I have asked Adrian to add some more meaningful data/descriptions even in his VOC widget on purpleair. this is however very early days.

[prestwickwx]

Good morning Simon

I have added the Purple Air option screen to the simple update , I was also able to use Grahams(Ringwood UK) data also has his purple air has no VOC capability so the fallback is a simple N/A display as shown below .this makes the optional screen available to use for all purple air hardware owners as shown below. if you need chart data for purple air it has been there for many months as an option as shown below.

simple update 30-05-2020 via https://weather34.com/homeweatherstatio ... alone.html



paII-MAY.png

Hi Brian,

I noticed your new Purple Air screen - nice addition. The module has a links to the Purple Air Website - they presently point to your info site. Not sure whether that was intentional or an over site.

Also, for future updates, I do think your earlier version (below) which includes the AQI numerical range definitions is great for visitors who are not familiar with the values.

Capture.PNG (87.79 KiB) Viewed 4578 times

Take care,

Chuck

[weatherist34]

as always many thanks an oversight or error on my behalf

fixed also cleaned up red color which was way to dark on dark background, increased font visibility .

paII-fix1.png (166.62 KiB) Viewed 4576 times

[prestwickwx]

Got it. The grids look great!

I forgot that the small module gives the definition, so the Air Quality info I mentioned above may not be needed.

Chuck

[ConligWX]

Brian here is some documentation from the BME680 (Temp,Hum,Press + VOC) which is experimental fitting to the PurpleAir Sensor.

https://www.bosch-sensortec.com/media/b ... -ds001.pdf

included in the documentation is Table4: Index of Air Quality IAQ Classification and color-coding

Capture.JPG (103.79 KiB) Viewed 4550 times

This is for the VOC sensor.

[weatherist34]

many thanks Simon
have added the color code based on that now , also cleaned up code , cleaned up PM10 formula and other little minor details.

available via the simple update Standalone-update-31-05-2020.zip

think thats job done .many thanks for the idea of VOC im sure some who have it will benefit.

pa-IIclean.png (74.83 KiB) Viewed 4543 times