Ok, could it be that it is also due to the Rasberry PI4, I am using a Raspberry P3B with firmware 4.14.93-Re4son-v7 +.
Maybe you can sell NANO-CUL to-masz
see: Question on NANO-CUL (mbus) 868 Mhz · Issue #3 · zibous/ha-watermeter · GitHub
Hi, I’ve just had a meter installed by Severn Trent in the UK:
I’m getting the following from the test:
15:10:45 [D] [wmbus:184]
Meter ID [0x32502971] RSSI: -63 dBm LQI: 128 Mode: T1 not found in configuration T: 5E44A511712950327C077A18005005957E2B712BFB380A541D21A79AD7D3A68964CC4BE9A11C894BF7350D19FD8CFA9CFDFCFDFEB821FF4AB827ACBCFAD4ED0F53E60F742C34129B9309914F693680667F1B9D61DF866FF1CF0995C1F78290 (95)
The messages I get don’t seem to analyse properly. https://wmbusmeters.org/analyze/5E44A511712950327C077A18005005957E2B712BFB380A541D21A79AD7D3A68964CC4BE9A11C894BF7350D19FD8CFA9CFDFCFDFEB821FF4AB827ACBCFAD4ED0F53E60F742C34129B9309914F693680667F1B9D61DF866FF1CF0995C1F78290
Any guidance at all on what i’m doing wrong?
I also get one random message of length 47:
15:47:24 [I] [wmbus:084]
Using driver ‘izar’ for ID [0x32502971] RSSI: -60 dBm LQI: 128 Mode: T1 T: 2E44A511712950327C077A1B0020255880EB29D37780CA3BB0E8FE42B85E3AB5F30BDFDEBCF2866DF956FB3C27E84A (47)
It seems to indicate an encryption key is required. Is that right? If so, where would I get this from and how do I add it to the configuration?
Hi @jamesdean, ST Water have just upgraded water meter to the same as yours - IZAR RC 868 i W G4.
Did you manage to make get yours working? I’ve tried using a ESP32/CC1101 approach (GitHub - zibous/ha-watermeter: Data provider for smartmeter watermeter.) but it doesn’t seem to pick anything up in the test.
It may be due to the following reasons:
- ESP32 + CC1101 is not working properly (but should be visible in the logging).
- Watermeter is too far away or provides a weak signal.
- You need a key to decode the telegram
For testing you can find ready-made firmware here:
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Hi Amardeep, ST Water recently installed an IZAR RC 868 i W G4 meter outside my property and I am interested in creating a device to obtain the water useage reading without having to go outside the property.
Prior to purchasing any items I would appreciate if you could let me know if you manage to get your ESP32/CC1101 device to obtain the readings.
Any guidance you could provide would be appreciated.
Hi jamesdean, ST Water recently installed an IZAR RC 868 i W G4 meter outside my property and I am interested in creating a device to obtain the water useage reading without having to go outside the property.
Did you manage to resolve the issues that you had?
I would appreciate any guidance that you could provide regarding hardware used and if an encryption key is required.
Sadly not. I managed to get a connection, however ST refused to hand over the encryption key. It sounds like they use one key for all meters!
Thanks for your reply, it’s doubtful then that it will be possible to obtain the encryption key but if I see anything I will let you know.