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BL602 on MHCOZY Dry Contact Relay: Slow WiFi Connection When AP Is Very Close

fwiffo2k 267 2
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  • #1 21539067
    fwiffo2k
    Level 2  
    Hello,

    I've recently made a lot of tests and checks on a device called MHCOZY dry contact relay, available with ewelink cloud prebuilt in (and converted a couple of months ago with OpenBK).
    BL602 on MHCOZY Dry Contact Relay: Slow WiFi Connection When AP Is Very Closemhcozy.jpg Download (20.18 kB) BL602 on MHCOZY Dry Contact Relay: Slow WiFi Connection When AP Is Very Close440208301-...2ebef6.png Download (285.3 kB)
    even if the image says that it has an RF possibility, the one I have doesn't allow RF since it's missing all the components to support RF signals.

    What I've found so far:
    It mounts a BL602;
    It works, apart original firmware, with the firmware available at: https://github.com/openshwprojects/OpenBK7231T_App

    What I've found strange is as follows:
    recently I've installed a wifi AP really near to the relay, since I needed it in the garden, it's at half a meter away from the relay, and also upgraded the firmware to latest version, after that the device took even half an hour to reconnect. But in AP it worked like a charm.

    After some more investigation, custom build firmware, checks on everything I could, I found out that if this kind of device is too near to an AP, it won't connect easily.
    Why I say this? Because after that, I've moved the device in my house to make some tests, and changed the AP used (the outside AP uses a different name than what I have in my home), and found out that if the RSSI is MORE than -55 (far) it will connect instantaneously.

    Maybe this is something that anyone else noticed? something hardcoded or maybe poor quality wireless board? I'm pretty clueless.
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  • #2 21539393
    divadiow
    Level 34  
    @miegapele updated OpenBL602 to a later SDK so may be able to comment/want to know about this behaviour
  • #3 21540162
    fwiffo2k
    Level 2  
    this behavior is present in both old and new SDK, I believe there is something blocking the device from connecting if AP too nearby
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