Support for Airthings Wave radon detector with ESP32-BLE

[qingz2004]

Here is the detector.
https://www.airthings.com/en/wave-radon
Somebody wrote a sketch to build a MQTT bridge with a ESP32.
https://github.com/sabeechen/AirthingsMQTT

Is it possible to have it build in to Tasmota32-bluetooth?
Or at least read and decode the messages from the detector?

[Jason2866]

Can be done with Berry. A example for https://github.com/tony-fav/tasmota-blerry/tree/dev

[qingz2004]

Got it. Thanks!
Actually I only need the BLEOp1 command to read the data from the device. And it worked out perfect.

[trlafleur]

have you published your Airthing Tasmota code??

thanks

[SL06]

I know that this post is old but I hope to find someone with share interest. I just bought a Airthings Wave Radon.
I can connect to the Airthings and read the datas via bluetooth.

private let serviceUUID = CBUUID(string: "B42E4A8E-ADE7-11E4-89D3-123B93F75CBA")
private let airthingsServiceUUID = CBUUID(string: "B42E4A8E-ADE7-11E4-89D3-123B93F75CBA")
private let sensorServiceUUID = CBUUID(string: "B42E4A8E-ADE7-11E4-89D3-123B93F75CBA")

private let sensorCharacteristicUUID = CBUUID(string: "B42E4DCC-ADE7-11E4-89D3-123B93F75CBA")

Data (hex): 014d40003300a0003507ffffffffffff0000ffff
Bytes 0-1: 014d = 19713
Bytes 1-2: 4d40 = 16461
Bytes 2-3: 4000 = 64
Bytes 3-4: 0033 = 13056
Bytes 4-5: 3300 = 51 => actual radon - OK
Bytes 5-6: 00a0 = 40960
Bytes 6-7: a000 = 160 => long term radon ?
Bytes 7-8: 0035 = 13568
Bytes 8-9: 3507 = 1845 (normal) = Temperature 18.5C ( /100) - OK
Bytes 9-10: 07ff = 65287
Bytes 10-11: ffff = 65535
Bytes 11-12: ffff = 65535
Bytes 12-13: ffff = 65535
Bytes 13-14: ffff = 65535
Bytes 14-15: ffff = 65535
Bytes 15-16: ff00 = 255
Bytes 16-17: 0000 = 0
Bytes 17-18: 00ff = 65280
Bytes 18-19: ffff = 65535 => batterie ? 100%

I have found temperature and radon but struggling to identify the humidity (actual level 38.5)
byte 0-1 seems to change with humidity 19713/500 = 39.426 but it does not corresponds exactly. On an Airthing Wave Plus device, the calculation was values divide per 100. I dont see any data close to 3850. Did someone solve this mystery?

[qingz2004]

Byte Name Type Notes
0 version uint8 sensor version, always 0x01
1 humidity uint8 relative humidty = value/2 (percent)
2-3 -- -- unknown, varies
4-5 radon_sta uint16 radon short-term average (Bq/m3)
6-7 radon_lta uint16 radon long-term average (Bq/m3)
8-9 temperature uint16 temp = val/100 (celsius)

[SL06]

Thanks for sharing the sensor data format. Problem solved . Regards. Sylvain Lareau ***@***.*** ***@***.***>il.com ***@***.***> (819) 669-4962

…

Le 3 avr. 2025 à 14:03, qingz2004 ***@***.***> a écrit : Byte Name Type Notes 0 version uint8 sensor version, always 0x01 1 humidity uint8 relative humidty = value/2 (percent) 2-3 -- -- unknown, varies 4-5 radon_sta uint16 radon short-term average (Bq/m3) 6-7 radon_lta uint16 radon long-term average (Bq/m3) 8-9 temperature uint16 temp = val/100 (celsius) — Reply to this email directly, view it on GitHub <#14950 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIWMIQIMFUQYPODBK7FEEIT2XVZXBAVCNFSM6AAAAAB2MZQXKSVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTENZRG42DEMI>. You are receiving this because you commented.