RF reciever : Dump Raw

ESPHome
1

hello ,

i have a rf 433mhz keyfob ( A+ B buttons )
when i check the log of my esphome reciever , i got RAW data.

How can i detect the key to create an automatisation ?

the log only shows :

[18:54:12][I][remote.raw:041]: Received Raw: -30877
[18:54:12][I][remote.raw:041]: Received Raw: -28251
[18:54:12][I][remote.raw:041]: Received Raw: -39
[18:54:12][I][remote.raw:041]: Received Raw: -30877
[18:54:12][I][remote.raw:041]: Received Raw: -30864
[18:54:12][I][remote.raw:041]: Received Raw: -23027
[18:54:13][I][remote.raw:041]: Received Raw: -26
[18:54:13][I][remote.raw:041]: Received Raw: -30863
[18:54:13][I][remote.raw:041]: Received Raw: -30863
[18:54:13][I][remote.raw:041]: Received Raw: -20101
[18:54:13][I][remote.raw:041]: Received Raw: -13
[18:54:13][I][remote.raw:041]: Received Raw: -30877
[18:54:13][I][remote.raw:041]: Received Raw: -30864
[18:54:13][I][remote.raw:041]: Received Raw: -30864
[18:54:14][I][remote.raw:041]: Received Raw: -2103
[18:54:14][I][remote.raw:041]: Received Raw: -339
[18:54:14][I][remote.raw:041]: Received Raw: -31830
[18:54:14][I][remote.raw:041]: Received Raw: -30838
[18:54:15][I][remote.raw:041]: Received Raw: -353
[18:54:15][I][remote.raw:041]: Received Raw: -31830
[18:54:15][I][remote.raw:041]: Received Raw: -31817

fob RF key A+B

2

Many keyfobs use rolling codes and you need to know the algorithm then to be able to create the keys.

3

Interesting all your raw codes are negative. Show your Yaml and it may get more response.

4

…and present your components and wiring…

5

To make things easy I often just use the openmqttgateway instead of esphome on an esp8266 or esp32.

6

What is interesting is the missing pattern.
Clicking the same key several times should produce the same pattern.
The values might be 5-10 above or below the previous one, but that is not the case here, which might indicate the usage of rolling codes.

7

this is my code :

external_components:
  - source:
      type: git
      url: https://github.com/swoboda1337/sx127x-esphome
      ref: main
    refresh: 1d

spi:
  clk_pin: GPIO5
  mosi_pin: GPIO27
  miso_pin: GPIO19

sx127x:
  nss_pin: GPIO18
  rst_pin: GPIO23
  frequency: 433920000
  modulation: OOK
  rx_floor: -90
  rx_bandwidth: 50_0kHz

remote_receiver:
  pin: GPIO32
  #filter: 255us
  #idle: 2000us
  #buffer_size: 100000b
  memory_blocks: 8
  dump: 
    - rc_switch
    - raw

installing openmqttgateway as walkaround could be a solution , and then reflash my yaml again…

8

via openmqttgateway , there is a log :

{"model":"Smoke-GS558","id":7019,"unit":5,"learn":0,"code":"136d65","protocol":"Wireless Smoke and Heat Detector GS 558","rssi":-42,"duration":344208}

and the other button on the fob is :

{"model":"Smoke-GS558","id":7019,"unit":5,"learn":0,"code":"436d65","protocol":"Wireless Smoke and Heat Detector GS 558","rssi":-41,"duration":336000}

actually its a fob not a rf-smokedetector :slight_smile:

I think i solved this problem
when my rf-keyfob is 30cm away from the 433Mhz reciever , then it works ( log raw , log rc_switch , binary sensor )

when i’m 40cm or more away then i got a log that is messed up…
on the other hand , my rf doorbell is 5meters away and works 100% fine and correct

so the problem wil be the rf-keyfob i guess

9

Yeah, I think it’s just based on the protocol. I have door sensors that come up as smoke detectors. Key fob may be off center frequency but in a band close enough to get some signal recognized.

10

Via a rtlsdr dongle to found out why all values are negative.

The rf keyfob transmits on a freq near to 433.92

So the esphome rf reciever was not tuned correctly