logo elektroda
logo elektroda
X
logo elektroda

OpenBeken on touch switch with T34 - offline control, 433MHz remotes, cloud

2konrafal1993 75 5
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 21710459
    2konrafal1993
    Level 38  
    Hello, I have a Chinese touch switch which is based on a t34 processor, its additional functions are 433MHz remote control operation and wifi. Unfortunately it doesn't quite work as I would like because when it is connected to wifi it crashes after a few hours and you can't even operate the touch. I know there is openbeken but I have not found satisfactory answers to some of my questions.

    1) By uploading openbeken can I become completely cloud free and not have to use wifi?
    2. is it then possible to pair two remotes and use the switch by touch only and the 433MHz remotes without having to connect to the cloud. I know I will have to do the setup after wifi but then I don't want any network connection.
    3. is it enough to have a t34 processor to be able to achieve the intended purpose? There are no markings on a few of the ICs and I don't know if this will be a hindrance.
  • ADVERTISEMENT
  • #2 21710531
    p.kaczmarek2
    Moderator Smart Home
    Hi, I'm happy to help and show the procedure step by step, although the rule of thumb is to show a photo from the middle of the equipment - this will allow you to assess the situation and the operation of the device.

    1. after uploading OBK https://github.com/openshwprojects/OpenBK7231T_App the device works 100% locally, you can then control it with the buttons on the case or optionally via WiFi, but the device itself will not send data to the internet

    2. as long as it is the common type of switch, where the RF chip is connected to the button controller and only it via digital IO to the WIFi module, the RF pairing will continue to work. The remotes will continue to work, etc.
    Refer to this study:
    QTouch WiFi switch plugged into L-wire only - test, interior, schematic .
    Go to paragraph "Pairing with RF433 remote control"

    This is because this type of device has a separate chip that handles the RF and only gives the WiFi module the "button pressed or not" signals, and the WiFi module "doesn't know" if it's "pressing RF" or the user.

    3. we always flash only the WiFi module.


    What you need to do next:
    - first accurate pics of the inside of this device, the packaging too maybe, what model you have exactly
    - then flash reading using https://github.com/openshwprojects/BK7231GUIFlashTool , I will give you more information if needed. Reading a copy of the memory is VERY IMPORTANT, from it you can read the GPIO configurations (otherwise we will guess in GPIODoctor) , in case something goes wrong you can also restore it
    - then programming and configuration
    Helpful post? Buy me a coffee.
  • ADVERTISEMENT
  • #3 21710552
    2konrafal1993
    Level 38  
    OpenBeken on touch switch with T34 - offline control, 433MHz remotes, cloud OpenBeken on touch switch with T34 - offline control, 433MHz remotes, cloud OpenBeken on touch switch with T34 - offline control, 433MHz remotes, cloud OpenBeken on touch switch with T34 - offline control, 433MHz remotes, cloud OpenBeken on touch switch with T34 - offline control, 433MHz remotes, cloud OpenBeken on touch switch with T34 - offline control, 433MHz remotes, cloud .
  • ADVERTISEMENT
  • #4 21710571
    p.kaczmarek2
    Moderator Smart Home
    I'm not familiar with this particular board, but that's potentially what I was saying. There is a chance that RF will still work after changing the firmware. Normally I would ask you to investigate the MCU connections to the T34, but.... access to the T34 pads is so poor with a multimeter that I won't bother asking about it.

    Can you read which circuit is the RF? Or both without markings?

    I don't see any programming pads unfortunately. I guess you are facing a procedure like here:
    [BK7231N / T34] Teardown Tuya Generic Wifi Wall Switch 3-fold .

    Worth writing down the model of the device: AY-W602 SH_GANG_2_BL_WF
    Helpful post? Buy me a coffee.
  • #5 21710608
    2konrafal1993
    Level 38  
    p.kaczmarek2 wrote:
    I see no programming pads unfortunately.
    .
    From my inspection it appears that there are not even any RX and TX paths out, this is a handicap but maybe I can sort it out.
    p.kaczmarek2 wrote:
    Can you read which circuit is RF? Or both without markings?
    .
    Both have no markings.
ADVERTISEMENT