Requesting support for Ecowitt/Fineoffset air quality sensors

[ChrisM510]

I would like if support for Ecowitt/Fineoffset air quality sensors could be added. I bought a WH41 (outdoor) and a WH46 (indoor) sensors, and would like to bring them into WeeWX.

Here is what I was able to pick up using sudo PYTHONPATH=/usr/share/weewx python /usr/share/weewx/user/sdr.py --cmd="rtl_433 -M utc -F json"

out: ['{"time" : "2025-02-04 13:10:21", "model" : "Fineoffset-WH0290", "id" : 197, "battery_ok" : 0.800, "pm2_5_ug_m3" : 9, "estimated_pm10_0_ug_m3" : 8, "family" : 65, "unknown1" : 0, "mic" : "CRC"}\n', '{"time" : "2025-02-04 13:10:21", "model" : "Fineoffset-WH0290", "id" : 197, "battery_ok" : 0.800, "pm2_5_ug_m3" : 9, "estimated_pm10_0_ug_m3" : 8, "family" : 65, "unknown1" : 0, "mic" : "CRC"}\n'] out: ['{"time" : "2025-02-04 13:09:57", "model" : "Fineoffset-WH46", "id" : 10514, "battery_ok" : 1.000, "temperature_C" : 22.500, "humidity" : 35, "pm1_ug_m3" : 2.300, "pm2_5_ug_m3" : 2.400, "pm4_ug_m3" : 2.400, "pm10_ug_m3" : 2.400, "co2_ppm" : 541, "unknown" : 400, "ext_power" : 1, "mic" : "CRC"}\n', '{"time" : "2025-02-04 13:09:58", "model" : "Acurite-Tower", "id" : 7642, "channel" : "B", "battery_ok" : 1, "temperature_C" : 9.300, "humidity" : 77, "mic" : "CHECKSUM"}\n', '{"time" : "2025-02-04 13:09:58", "model" : "Acurite-Tower", "id" : 7642, "channel" : "B", "battery_ok" : 1, "temperature_C" : 9.300, "humidity" : 77, "mic" : "CHECKSUM"}\n', '{"time" : "2025-02-04 13:09:58", "model" : "Acurite-Tower", "id" : 7642, "channel" : "B", "battery_ok" : 1, "temperature_C" : 9.300, "humidity" : 77, "mic" : "CHECKSUM"}\n']

Would this be possible? What can I do to help?

Thanks in advance!

[andylittle]

I assume Fineoffset-WH0290 is the WH41

{"time" : "2025-02-04 13:10:21", "model" : "Fineoffset-WH0290", "id" : 197, "battery_ok" : 0.800, "pm2_5_ug_m3" : 9, "estimated_pm10_0_ug_m3" : 8, "family" : 65, "unknown1" : 0, "mic" : "CRC"}

{"time" : "2025-02-04 13:09:57", "model" : "Fineoffset-WH46", "id" : 10514, "battery_ok" : 1.000, "temperature_C" : 22.500, "humidity" : 35, "pm1_ug_m3" : 2.300, "pm2_5_ug_m3" : 2.400, "pm4_ug_m3" : 2.400, "pm10_ug_m3" : 2.400, "co2_ppm" : 541, "unknown" : 400, "ext_power" : 1, "mic" : "CRC"}

[andylittle]

Fineoffset-WH0290, this one should already work. Just add to your sensor map.

[ChrisM510]

@andylittle Yeah, I just checked and found out I am running v.0.87 (how, I have no idea, since I completely rebuilt my WeeWX server in 11/2023).

Can I just swap out the sdr.py file and restart WeeWX? I am running v.4.10.2 of WeeWX...v5 gave me all kinds of problems, and am not ready to tackle THAT upgrade. LOL

BTW, thanks Andy!!!

[ChrisM510]

I assume Fineoffset-WH0290 is the WH41

{"time" : "2025-02-04 13:10:21", "model" : "Fineoffset-WH0290", "id" : 197, "battery_ok" : 0.800, "pm2_5_ug_m3" : 9, "estimated_pm10_0_ug_m3" : 8, "family" : 65, "unknown1" : 0, "mic" : "CRC"}

{"time" : "2025-02-04 13:09:57", "model" : "Fineoffset-WH46", "id" : 10514, "battery_ok" : 1.000, "temperature_C" : 22.500, "humidity" : 35, "pm1_ug_m3" : 2.300, "pm2_5_ug_m3" : 2.400, "pm4_ug_m3" : 2.400, "pm10_ug_m3" : 2.400, "co2_ppm" : 541, "unknown" : 400, "ext_power" : 1, "mic" : "CRC"}

Yes, after doing some digging this morning, I found out that the WH0290 is a kit whose sensor is the WH41. I only purchased the WH41 sensor since I am intending on using this exclusively with WeeWX, and didn't need the base station/display.

[andylittle]

Yes you can swap the file. Try this untested one, I added the outdoor sensor" Let me know of any issues.