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Discussing ESP8285 10A MS-101 TDQ-101-U1-V1.7 Smart Switch: Tuya-Convert, Tasmota Flash, and Pinout

erlipan2001 3123 8
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    #1 20578040
    erlipan2001
    Level 6  
    Posts: 29
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    A smart switch with an ESP8285 directly soldered to the PCB

    Tuya-convert doesn't work. I used the Tasmota web installer to flash the device

    Discussing ESP8285 10A MS-101 TDQ-101-U1-V1.7 Smart Switch: Tuya-Convert, Tasmota Flash, and Pinout Discussing ESP8285 10A MS-101 TDQ-101-U1-V1.7 Smart Switch: Tuya-Convert, Tasmota Flash, and Pinout Discussing ESP8285 10A MS-101 TDQ-101-U1-V1.7 Smart Switch: Tuya-Convert, Tasmota Flash, and Pinout

    Pinout:
    GPIO 5 LED
    GPIO 12 RELAY
    GPIO 13 BUTTON
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  • #2 20578079
    p.kaczmarek2
    Moderator Smart Home  
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    Overal quality of the switch seems very cheap, I can see only the fusible resistor protection of the input, but still, it should do the job. Have you managed to get the Tasmota template for that one?
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  • #3 20578085
    erlipan2001
    Level 6  
    Posts: 29
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    I totally forgot about the templates. I will update the post.
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  • #4 21053081
    patrickmasson9
    Level 1  
    Posts: 1

    Hello,

    I'm newbie and I'm looking for the schema about the wires how to flash this chip.
    Thanks
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  • #5 21782465
    p.kaczmarek2
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    I just had the same device and realized... it has no LDO! BP2525 provides 3.3V directly, and relay is also for 3.3V. Interesting. @divadiow
    Here's flash backup: https://github.com/openshwprojects/FlashDumps/commit/e990c20d65816edfeb424e4befbda3631ea2257e
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  • IO13/D7 used to enter AP mode

    #6 21782487
    divadiow
    Level 38  
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    I have flashed and paired. IO13/D7 to get into AP mode.

    Code: Text
    Log in, to see the code


    Code: JSON
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    Code: JSON
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    Smart switch app screen with central power button set to OFF Device update screen with message No updates available displayed
  • #7 21782551
    p.kaczmarek2
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    MCU module?
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  • #8 21782562
    divadiow
    Level 38  
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    doesn't it always have both, if TuyaMCU it'll be different version
  • #9 21787165
    p.kaczmarek2
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    Is it? I didn't look there much, but at some point I assumed that for non-TuyaMCU devices, it will have only a single version string. I may be wrong.
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Topic summary

LABEL_AI_GENERATED
Discussion of a cheap ESP8285-based smart switch (MS-101 / TDQ-101-U1-V1.7) that could not be flashed with Tuya-Convert, but was successfully flashed using the Tasmota web installer. The initial pinout identified GPIO5 as LED, GPIO12 as relay, and GPIO13 as button. Later posts noted the device appears to use a BP2525 power supply with no LDO, providing 3.3 V directly, and that the relay is also a 3.3 V part. A flash backup was shared, and another user reported successful flashing and pairing, including entering AP mode via IO13/D7 and confirming ESP8285 boot details and flash size. There was also discussion about whether the device uses a TuyaMCU and how version strings are reported.
AI summary based on the discussion. May contain errors.
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