Lilygo-rtl_433-fsk

gmaclean1981 · March 13, 2024, 1:41am

Hello!

I have a couple water meters (SCMplus) that I was able to work with RTL_433 on a Raspberry Pi, but haven’t had luck so far with this solution. I’m wondering if there is any additional configuration I’d need ensure FSK on 915mhz enabled?

I have a 915mhz version of the lilygo-rtl
Used web install of lilygo-rtl_433-fsk at (Option 1) Upload from the web | OpenMQTTGateway v1.7.0
Confirmed that frequency = ‘915.000’ on the /rf page.

Any thoughts or suggestions?

Thank you!

1technophile · March 16, 2024, 11:34pm

Hello,

It seems that the frequency used is not 915 but 912.600155

github.com/merbanan/rtl_433

Add IDM and NetIDM support

merbanan:master ← evilpete:idm

opened 07:38AM - 01 Jul 20 UTC

evilpete

+730 -0

Protocol support for both IDM and NetIDM Both Protocols are functional and r…eport the same data as [rtlamr](https://github.com/bemasher/rtlamr) in json format. Currently the code is unable to differentiate between the the two similar [protocols](https://github.com/bemasher/rtlamr/wiki/Protocol) thus both will respond to the same packet. As of this time.I am unable to find any documentation on how to differentiate IDM and NetIDM packets as both use identical Sync ID / Packet Type / length / App Version ID and CRC Superfluous debugging statements have been left intact in the code incase needed in resolving the above mentioned shortcoming. Test files samples have been submitted in pull request [rtl_433_tests # 348](https://github.com/merbanan/rtl_433_tests/pull/348)

gmaclean1981 · March 24, 2024, 3:09am

Perfect, thank you for the suggestion!

I changed the frequency to 912.6 (912.600155 gets truncated in the UI) but I’m not getting anything. I wonder if this would be an indication that the Lilygo isn’t compatible with that frequency. (Board lists 868/915mhz)

uriva9w · February 22, 2025, 3:59pm

Dear [gmaclean1981]
Did you have any success reading your meters^ If so please Could you share your settings. Thx!

gmaclean1981 · February 24, 2025, 12:41pm

Unfortunately not. I use another SDR connected to a Pi for my water meter. I shelved mine some time ago.

I do have another Lilygo for 433mhz that works well to pick up weather stations, but the 900mhz unit I could not get up and running for my water meter.