Tasmota/Portisch Sonoff RF Bridge and Lacrosse sensors

Hardware
1

Hello,

Has anybody tried to sniff Lacrosse temperature & humidity sensors with Portisch firmware on a Sonoff RF Bridge?

I’m testing with a TX141TH-BCH but I’m not getting consistent results when sniffing using 0xB1.

Thanks,
Tales

2

Okay, I don’t know if anyone ever read my previous post. Anyway here I post again :slight_smile:

I never managed to properly sniff the codes from my sensors using the Sonoff Bridge with Portisch firmware. I also never managed to install the B1 to B0 conversion tool and neither understood how Simplicity Studio or the compiling process works for this firmware.

What I did was plug a SDL-RTL dongle into my H-A server (Ubuntu/Hassio) and run rtl_433 inside a docker container. Very easy to setup as rtl_433 already has the protocol for my sensors in its database. A script then collects the data from rtl_433 in json format and transmits a MQTT message on a given topic. So I reached my goal, I have info from my RF 433 MHz sensors being fed into Home Assistant.

But I still want to make it work with the Sonoff Bridge, as I intend to use my SDR dongle for other projects.

Considering that rtl_433 already knows the protocol (so its documented somewhere) and that I also decoded it using the same dongle and Universal Radio Hacker, would any Good Samaritan point me in the right direction on how have it compile into Portisch?

Thank you so much in advance.
Tales

3

Hey, I just started to look into this, did you figure out anything on the learning process?

4

Hey David,

Sorry I’ve been away from this forum, hadn’t seen your post.

I made a few advances, managed to install Simplicity Studio and compile Portisch including the buckets info for the Lacrosse sensors. But detection was unstable, and one out of three sensors was not detected at all. As I didn’t have the time to spend experimenting different bucket timings, I just gave up and went on with the SDR dongle and rtl_433. It’s been working flawlessly for 1+ year now.

The decision to give up on the Sonoff Bridge was in part motivated by the fact that the author apparently abandoned the project. I would suggest you to not spend a lot of time on this, and go straight to a rtl_433 based solution.