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How to Use IR Remote with 433MHz Radio on BK7231N Chip?

cijoml 1035 7
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  • IR receiver on P8 and transmitter on P7

    #1 21450607
    cijoml
    Level 9  
    Posts: 81
    Rate: 3
    I bought as a test IR remote 433MHz radio remote. Chip is CBU i.e. BK7231N plus special chip for 433MHz I do not know.
    At least IR part should be supportable.
    Does anybody know this or got it to work?

    Ali link: https://vi.aliexpress.com/item/1005006796540561.html
    A circuit board with visible integrated circuits and electronic components.
    Electronic module on a blue printed circuit board
    Close-up of a blue circuit board with an electronic component and a sticker with a QR code.
    Interior of an electronic device with visible circuit board and components.
    Here is decoded firmware
    {
    "wfst_pin":"9",
    "rf_study_feq":"0",
    "owm":"1",
    "rsthold":"3",
    "wfst_lv":"1",
    "netyc":"1",
    "infrr":"8",
    "netnc":"0",
    "infre":"7",
    "crc":"46"
    }
    Device configuration, as extracted from Tuya:
    - WiFi LED on P9
    - IR Receiver is on P8
    - IR Transmitter is on P7
    No module information found.
    And the Tuya section starts, as usual, at 2023424

    I also find that Button is connected to P23
    Attachments:
    • readResult_BK7231N_QIO_IRRF433_2025-22-2-15-57-15.bin (2 MB) You must be logged in to download this attachment.
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  • #3 21453675
    cijoml
    Level 9  
    Posts: 81
    Rate: 3
    Is IR part supported? I set the ping however I do not see any IR codes coming.
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  • #4 21698696
    cijoml
    Level 9  
    Posts: 81
    Rate: 3
    Hello any news in support of RF module?
  • #5 21698703
    divadiow
    Level 38  
    Posts: 5214
    Help: 448
    Rate: 916
    none I'm aware of :(

    maybe @DeDaMrAz is secretly working on it ;)
  • #6 21698707
    DeDaMrAz
    Level 23  
    Posts: 620
    Help: 34
    Rate: 130
    divadiow wrote:
    maybe @DeDaMrAz is secretly working on it


    CC1101 module incoming, SH4 module is on the long wait... we'll see.
  • #7 21788440
    cijoml
    Level 9  
    Posts: 81
    Rate: 3
    >>21698707 hello any news regarding RF module support?
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  • #8 21788468
    DeDaMrAz
    Level 23  
    Posts: 620
    Help: 34
    Rate: 130
    cijoml wrote:
    hello any news regarding RF module support?


    We added basic RF support for 1-pin receivers based on SYN590 for now, principal for CC1101 is the same but it will need time to add codebase and test, we are still working on it.

Topic summary

LABEL_AI_GENERATED
The discussion concerns a Tuya-based IR and 433 MHz radio remote built on a BK7231N CBU module with an unknown RF chip. The device configuration shows IR receiver on P8, IR transmitter on P7, Wi-Fi LED on P9, and a button on P23, but the RF module is identified as likely SH4/CMTOV30 and initially unsupported in OpenBeken. IR functionality was questioned, but no IR codes were observed. Later updates mention that basic RF support was added for 1-pin receivers based on SYN590, while CC1101 support is still under development and SH4 remains on the waiting list.
AI summary based on the discussion. May contain errors.
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