Control Relay with HomeAssistant, Flashed Sonoff RF bridge...RF receiver and Arduino UNO

Configuration
1

Hi All- I am facing problem to configure my relay switch with via RF. I have a RF receiver connected to relay via Arduino Uno module. I am able to turn on and off relay using a arduino code with Sonoff remote. I wanted the control via Homeassistant switch so i bought a Sonoff RF bridge, flashed with Tasmota, enabled MQTT, but i am not able to control or configure HA switch to pass the load to turn on an off. I have gone through so many threads but not able to nail this, any one has a clear steps. Many thanks. One thing i have noticed is via control with Remote the RF code is hex code while what i see in Sonoff bridge is Decimal code…Although i tried permutation and combination in payload…nothing works…heellpppppp

2

this mite help

3

Thanks stephen - i did try this, but i am getting a switch state which is dictated by sensor so i have to use remote always. I dont want to use the remote instead toggle of switch in HA to operate,

4

so what happens

when you use the services call

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in the Developer tools

remember to match the topic to your topic

and the code to your code.

5

Just had a brain fart

in the console of the rf you see something like

MQT: tele/tasmota/RESULT = {"Time":"2020-05-27T18:59:06","RfReceived":{"Data":"0x7028D2","Bits":24,"Protocol":1,"Pulse":238}}

this

{"Data":"0x7028D2","Bits":24,"Protocol":1,"Pulse":238}

is the data you want to send back to the rf bridge

try this

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6

I see this in my sonoff rf console, not sure why there is difference in format

17:03:36.098 MQT: tele/rf-bridge/RESULT = {“Time”:“2021-09-10T17:03:36”,“RfReceived”:{“Sync”:7640,“Low”:270,“High”:750,“Data”:“768858”,“RfKey”:“None”}}

I am finally able to publish via a switch in HA

This is what i could come up with

  • platform: mqtt
    name: “Bathroom Light”
    command_topic: “cmnd/rf-bridge/Backlog”
    availability_topic: “tele/rf-bridge/LWT”
    payload_available: “Online”
    payload_not_available: “Offline”
    state_topic: “tele/rf-bridge/RESULT”
    value_template: ‘{{value_json.RfCode}}’
    payload_on: “RfSync 7640; RfLow 270; RfHigh 750; RfCode #768851”
    payload_off: “RfSync 7640; RfLow 270; RfHigh 750; RfCode #768852”
    state_on: “#768851”
    state_off: “#768852”
    optimistic: true
    retain: false
    qos: 2

Now i am having brain struggle to get a adruino nano code going to get the relays working. I am using Adruino Nano with RF reciever . Figured out that i need to use rc-switch library but since i am noob in programming - not able to figure out code. :grimacing: :exploding_head:… so pointer will help

7

Can any one direct me to Arduino code?