New MJWSD05MMC with English version LCD #587

kezzkezzkezz · 2024-12-26T06:17:44Z

trying both 12 hour and 24 Hour time formats show incorrectly, pressing top button and cycling through to to the time does show correctly

pvvx · 2024-12-26T06:24:17Z

This is another MJWSD05MMC.
Firmware for another screen version:

kezzkezzkezz · 2024-12-26T06:29:33Z

I have an English version with the same model number

kezzkezzkezz · 2024-12-26T06:31:15Z

pvvx · 2024-12-26T06:33:47Z

I have an English version with the same model number

I and other users have only a Chinese version. On sale since 2022...

kezzkezzkezz · 2024-12-26T06:39:03Z

What do i need to do to either Dump the English firmware or change to correct it? i just picked up two of them today from Boxing day sales. i still have one at stock firmware

pvvx · 2024-12-26T07:01:19Z

You need to read the firmware.
There are several options.
Programmer - TLSR825xComFlasher.py
or https://github.com/pvvx/TLSR825x_OTA_Flash_Hacker

Another option:
Publish a map of the segments of the new LCD.

Connect to MJWSD05MMC
Enter the command: "60N0N1..N17", where N0 - N17 bytes of the LCD buffer (HEX).

Enter one active data bit in the LCD-buffer and draw a card...
"60010000000000000000000000000000000000"
"60020000000000000000000000000000000000"
"60040000000000000000000000000000000000"
...
"60000000000000000000000000000000000080"

Sample map.

The third option is to find a new OTA file on Xiaomi websites...

The fourth option: wait until I find a new version on sale, buy it and receive...

huncrys · 2024-12-26T23:13:47Z

I got the same SKU, I created the LCD segment mapping for it:

/* MJWSD05MMC SKU: BHR9041GL LCD buffer:  byte.bit
                                                              __ __
  	 AM  PM 	  BLE         BAT  				  17.5( ^__^    ^   )17.5
  	 3.0 2.0	  0.0       [|17.4]#                17.6  17.7


         --3.4--         --2.4--            --1.4--         -17.0--      o 0.4
  |    |         |     |         |  1.0   |         |     |         |      +--- 0.4
  |   3.1       3.5   2.1       2.5  o   1.1       1.5   0.1      17.1     |
  |    |         |     |         |        |         |     |         |      ---- 0.5
 4.4     --3.2--         --2.2--    1.0     --1.2--         --0.2--        |
  |    |         |     |         |   o    |         |     |         |      |
  |   3.3       3.6   2.3       2.6      1.3       1.6   0.3      17.2    0.6
  |    |         |     |         |        |         |     |         |         o/ 0.7
         --3.7--         --2.7--     *      --1.7--         -17.3--           /o
                                   13.0

 Воскресенье  Понедельник  Вторник    Среда    Четверг   Пятница  Суббота
   Sunday       Monday     Tuesday  Wednesday  Thursday  Friday   Saturday
    4.5          4.6         4.7       4.3       4.2      4.1       4.0

      --5.0--         --6.0--               --7.0--         --8.0--
    |         |     |         |           |         |     |         |
   5.5       5.1   6.5       6.1      /  7.5       7.1   8.5       8.1
    |         |     |         |      /    |         |     |         |
      --5.6--         --6.6--      6.4      --7.6--         --8.6--
    |         |     |         |    /      |         |     |         |
   5.7       5.2   6.7       6.2  /      7.7       7.2   8.7       8.2
    |         |     |         |           |         |     |         |
      --5.3--         --6.3--               --7.3--         --8.3--


      --9.4--         -10.4--      10.0      -11.4--           -12.4--      o 9.0
    |         |     |         |     o      |         |       |         |      +--- 9.0
   8.4       9.5   9.1      10.5         10.1      11.5    11.1      12.5     |
    |         |     |         |    10.0    |         |       |         |      ---- 7.4
      --9.6--         --9.2--       o        -10.2--           -11.2--        |
    |         |     |         |            |         |       |         |      |
   9.4       9.7   9.3      10.6         10.3      11.6    11.3      12.6    5.4
    |         |     |         |            |         |   *   |         |
      --9.4--         -10.7--                -11.7--    11.0   -12.7--


          -13.4--         -14.4--            -15.4--       o 15.0
  |     |         |     |         |        |         |       +--- 15.0
  |   12.1      13.5  13.1      14.5     14.1      15.5      |
  |     |         |     |         |        |         |       ---- 15.1
 12.0     -12.2--         -13.2--            -14.2--         |
  |     |         |     |         |        |         |       |
  |   12.3      13.6  13.3      14.6     14.3      15.6     15.2
  |     |         |     |         |   *    |         |          o/ 15.3
          -13.7--         -14.7--    14.0    -15.7--            /o

none: 16.0..16.7
*/

Main difference is that s3 can't show all symbols in the first digit, as bit 9.4 is shared (like in original version bit 6.0 in s2), so I lowered the threshold to 2999 and relocated Hi/Lo to the right.

Differences: huncrys@1023f0a

Full flash obtained with https://github.com/pvvx/TLSR825x_OTA_Flash_Hacker:
MJWSD05MMC_BHR9041GL_ff.zip

Custom firmware: https://github.com/huncrys/ATC_MiThermometer/raw/1023f0a5b110833ed28743bdb1776c14d08daad7/BTH_v48.bin

Tested it on my devices, LCD renders correctly:

Additional images:

kezzkezzkezz · 2024-12-26T23:40:16Z

I got the same SKU, I created the LCD segment mapping for it:

/* MJWSD05MMC SKU: BHR9041GL LCD buffer:  byte.bit
                                                              __ __
  	 AM  PM 	  BLE         BAT  				  17.5( ^__^    ^   )17.5
  	 3.0 2.0	  0.0       [|17.4]#                17.6  17.7


         --3.4--         --2.4--            --1.4--         -17.0--      o 0.4
  |    |         |     |         |  1.0   |         |     |         |      +--- 0.4
  |   3.1       3.5   2.1       2.5  o   1.1       1.5   0.1      17.1     |
  |    |         |     |         |        |         |     |         |      ---- 0.5
 4.4     --3.2--         --2.2--    1.0     --1.2--         --0.2--        |
  |    |         |     |         |   o    |         |     |         |      |
  |   3.3       3.6   2.3       2.6      1.3       1.6   0.3      17.2    0.6
  |    |         |     |         |        |         |     |         |         o/ 0.7
         --3.7--         --2.7--     *      --1.7--         -17.3--           /o
                                   13.0

 Воскресенье  Понедельник  Вторник    Среда    Четверг   Пятница  Суббота
   Sunday       Monday     Tuesday  Wednesday  Thursday  Friday   Saturday
    4.5          4.6         4.7       4.3       4.2      4.1       4.0

      --5.0--         --6.0--               --7.0--         --8.0--
    |         |     |         |           |         |     |         |
   5.5       5.1   6.5       6.1      /  7.5       7.1   8.5       8.1
    |         |     |         |      /    |         |     |         |
      --5.6--         --6.6--      6.4      --7.6--         --8.6--
    |         |     |         |    /      |         |     |         |
   5.7       5.2   6.7       6.2  /      7.7       7.2   8.7       8.2
    |         |     |         |           |         |     |         |
      --5.3--         --6.3--               --7.3--         --8.3--


      --9.4--         -10.4--      10.0      -11.4--           -12.4--      o 9.0
    |         |     |         |     o      |         |       |         |      +--- 9.0
   8.4       9.5   9.1      10.5         10.1      11.5    11.1      12.5     |
    |         |     |         |    10.0    |         |       |         |      ---- 7.4
      --9.6--         --9.2--       o        -10.2--           -11.2--        |
    |         |     |         |            |         |       |         |      |
   9.4       9.7   9.3      10.6         10.3      11.6    11.3      12.6    5.4
    |         |     |         |            |         |   *   |         |
      --9.4--         -10.7--                -11.7--    11.0   -12.7--


          -13.4--         -14.4--            -15.4--       o 15.0
  |     |         |     |         |        |         |       +--- 15.0
  |   12.1      13.5  13.1      14.5     14.1      15.5      |
  |     |         |     |         |        |         |       ---- 15.1
 12.0     -12.2--         -13.2--            -14.2--         |
  |     |         |     |         |        |         |       |
  |   12.3      13.6  13.3      14.6     14.3      15.6     15.2
  |     |         |     |         |   *    |         |          o/ 15.3
          -13.7--         -14.7--    14.0    -15.7--            /o

none: 16.0..16.7
*/

Main difference is that s3 can't show all symbols in the first digit, as bit 9.4 is shared (like in original version bit 6.0 in s2), so I lowered the threshold to 2999 and relocated Hi/Lo to the right.

Differences: huncrys@1023f0a

Full flash obtained with https://github.com/pvvx/TLSR825x_OTA_Flash_Hacker: MJWSD05MMC_BHR9041GL_ff.zip

Custom firmware: https://github.com/huncrys/ATC_MiThermometer/raw/1023f0a5b110833ed28743bdb1776c14d08daad7/BTH_v48.bin

Tested it on my devices, LCD renders correctly:

Additional images:

Absolute legend, i was going to do a firmware dump today, Can confirm works on both of mine

pvvx · 2024-12-27T06:33:29Z

How to distinguish MJWSD05MMC CH or EN version during initial firmware update?

Both: "V2.3"
"F2.0-CFMK-LB-TMDZ---"/ "F2.0-JY-LB-TMDZ-HW--" - The HW string is generated randomly by MI-Home.

Reading serial number by UUID "Web Bluetooth API" does not allow (blocked).

Original_OTA_Xiaomi_MJWSD05MMC_en.bin - Cut from FullFlash OTA and added "KNLT" header. CRC matched "tl_check_fw2.exe".

The firmware the original version OTA or FullFlash in the module with TLSR825x does not work. There is no way to check and find differences.

ddijkstra · 2024-12-27T11:44:33Z

I also have this global version.
I can also confirm this adapted version is working.

Perhaps add both screen versions to the same firmware and make it selectable via config?
Defaulting in global version (just my preference :) ) and make it selectable via BT on the flasher page after login?
Advantage : only one firmware to manage. If more display versions appear, they can be easily added. Firmware update will use the old settings.
Disadvantage : firmware will increase in size and complexity a bit due to new display maps, and initial firmware creation will take a little more time to incorporate the display selection.

Or a maybe simpler option: have 2 different versions on the flasher page, but ask if the uses wants the global(en) or the chinese(cn) version flashed.
Advantage : Less work on creating the first firmwares, correct language is detected during upgrade by version using flasher.
Disadvantage : If firmware changes happen, both need to be adapted/kept in sync.

huncrys · 2024-12-27T12:06:51Z

How to distinguish MJWSD05MMC CH or EN version during initial firmware update?

Flashed the CH version original OTA from https://github.com/pvvx/ATC_MiThermometer/raw/refs/heads/master/Original_OTA_Xiaomi_MJWSD05MMC_v2.0.0_0026.bin and the only difference I could find, apart from serial number, is that firmware revision string (00002a26-0000-1000-8000-00805f9b34fb ) and software revision string (00002a28-0000-1000-8000-00805f9b34fb) are both 0005 on the EN version, opposed to 0026. So if the CH model always comes with 0026 revision, this could be used to determine which custom firmware to offer initially.

nRF Connect configuration: https://gist.github.com/huncrys/510694c3a6098df9191b2dcef115cf52

pvvx · 2024-12-27T12:06:56Z

@ddijkstra Neither version is suitable.
If you are asked a question and you do not know that there is another option, then the answer may be wrong.

The number for MJWSD05MMC(en) (12) version is already assigned. And support for https://github.com/pvvx/ATC_MiThermometer/blob/master/BTE_v49.bin is already written into TelinkMiFlasher.html.

And: ZigBee OTA is selected by the IDs of the transmitting device, not by user selection....

pvvx · 2024-12-27T12:29:33Z

@huncrys
Changes have been made but need to be tested on a real device.
BTE_v49.bin, TelinkMiFlasher.html ...

15:48:51: Searching for devices
15:49:04: Connecting to: BTE_55B0E7
15:49:19: Hardware Revision String: V2.3
15:49:19: Software Revision String: V4.9
15:49:19: Firmware Revision String: github.com/pvvx
15:49:19: Detected custom Firmware
15:49:19: Hardware Version: MJWSD05MMC(en) V2.3, Software Version: 4.9
15:49:19: Custom config HEX string: 55871000002804a931310cb4

The tests were carried out on the TB-03F module.

huncrys · 2024-12-27T13:38:23Z

@pvvx

Thanks, checked it:

Correct firmware is offered when on stock:

OTA works, device is operational afterwards:

 14:23:38: Searching for devices
 14:23:44: Connecting to: BTE_8FD8A5
 14:23:49: Hardware Revision String: V2.3
 14:23:49: Software Revision String: V4.9
 14:23:49: Firmware Revision String: github.com/pvvx
 14:23:49: Detected custom Firmware
 14:23:49: Hardware Version: MJWSD05MMC(en) V2.3, Software Version: 4.9
 14:23:49: Custom config HEX string: 55870000005004a931000c5a

Correct firmware is offered when on BTE:

Found one issue with configuring though, Set Config triggers this error:

TelinkMiFlasher.html:3077  Uncaught TypeError: Cannot read properties of null (reading 'checked')
    at SendCustomConfig (TelinkMiFlasher.html:3077:26)
    at HTMLButtonElement.onclick (TelinkMiFlasher.html:1:1)

PR for fix: pvvx/pvvx.github.io#27

With this applied, everything seems to work.

ddijkstra · 2024-12-27T17:09:42Z

If you are asked a question and you do not know that there is another option, then the answer may be wrong.

True, however in my opinion there are options that can cause more user issues than asking the user the question : is the display displaying the day in chinese (周一、周二、周三、周四、周五、周六、周日), or English (Mon, Tue, Wed, Thu, Fri, Sat, Sun)

That being said, as huncrys mentioned that there is a way to detect between the 2 initial versions, this would be the best to eliminate to ask the user this question.

I have tested (the display part of) the BTE_v49.bin version as well and see it is working fine.

pvvx · 2024-12-27T17:13:41Z

is the display displaying the day in chinese (周一、周二、周三、周四、周五、周六、周日), or English (Mon, Tue, Wed, Thu, Fri, Sat, Sun)

In TelinkMiFlasher.html there is an option to disable the display of days of the week.
It makes no difference to me whether it's English or Chinese, since our week starts on Monday.

huncrys · 2024-12-27T18:08:46Z

@ddijkstra

That being said, as huncrys mentioned that there is a way to detect between the 2 initial versions, this would be the best to eliminate to ask the user this question.

pvvx already implemented the detection in pvvx/pvvx.github.io@faec1df

kezzkezzkezz · 2024-12-30T03:10:01Z

Awesome work guys, you've given me a reason to go buy two more of these lol

pvvx changed the title ~~MJWSD05MMC Character data for Time and date wrong format~~ New MJWSD05MMC with English version LCD Dec 26, 2024

pvvx added the enhancement New feature or request label Dec 26, 2024

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New MJWSD05MMC with English version LCD #587

New MJWSD05MMC with English version LCD #587

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New MJWSD05MMC with English version LCD #587

New MJWSD05MMC with English version LCD #587

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