Multiple Sonoff RF Bridge

Configuration
1

Hi,

I have started to integrate 433mhz sensors into my Home Assistant installation using the Sonoff RF Bridge (with Tasmota). All is working very well with switches, door/window sensors, and motion. As I continue to add sensors around my house I now have a problem with range. So I was thinking of adding another RF Bridge.

The obvious problem is that some transmitters could be picked up by both RF Bridges and therefore Home Assistant receives multiple MQTT posts for the same trigger.

Would this be a problem? Is there a way to support this? Can you force only 1 bridge to receive?
Thoughts please?

2

I dont think it would be a problem

as you would just make the Topic Differance

eg

binary_sensor: 
  - platform: mqtt
    state_topic: "tele/RF_Bridge/RESULT"
    name: 'Garage Side Door'
    value_template: '{{value_json.RfReceived.Data}}'
    payload_on: '100B0A'
    payload_off: '100B0E'
    device_class: door
    optimistic: false
    qos: 1

binary_sensor: 
  - platform: mqtt
    state_topic: "tele/RF_Bridge-2/RESULT"

then only the Sensor looking at the other topic will be change

so think you just have to make shour they are pointing to the right RF Bridge

Can’t see why it WILL NOT WORK

3

Brilliant…Of course. Thanks for the info.

4

That’s exactly what I do so yes it will work.

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5

Interested too since I have the same problem and just now received my second bridge

I don’t understand what could be wrong having the same topic for both bridges. If it’s a door sensor may receive two times the on or off command, a pir two times the motion command.
The commands if they trigger an alarm or a light doesn’t matter much. Maybe if you have notifications you may receive 2, not a big issue I think.

6

Theres no need. I run 2 rfbridges, same topic.
The first to pick up will report the state first. Thats all.

2 Likes
7

Yep what I thought. Might be a problem in rare cases when you have complex automations and you don’t want them to trigger twice, but for the most use same topic should be OK

1 Like
8

Hi,
How many sensors that 1 Sonoff RF Bridge after flashed Tasmota can received?
I heard someone said maximum 16 devices.
Could you please help to confirm?
Thanks

9

There is no limit based on RfReceived.Data

1 Like
10

I am trying to do the same, but for some reason it doesn’t work I have tried to use the same name for the MQTT Topic so I would have one of them pick up the signal

But for some reason I only see the key in the console for one of them?

This is my setup

image
image1003Ă—986 46.3 KB

The Hostname and the MQTT Fallback is not the same, but according to this post it shouldn’t matter only the topic right?

Best regards
Casperse

11

Never mind im stupid for some reason I forgot to switch the jumber after flashing on this RF module!

12

I am curious about this bc the non-flash version of the Sonoff bridge can receive 12 unique RF identification codes. If you get and use a second Sonoff bridge you run the risk of overlapping codes. Although some Sonoffs, as I understand, can share some codes between each other and not all of them.

I was told that when you flash it, this limitation no longer applies. Is this because the non-flash version has a software limitation not a hardware limitation?

1 Like