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User Experience: Tuya WiFi Smart IR Remote Controller IRC03 [BK7231N] from Aliexpress

atomphil 9420 35

TL;DR

  • The Tuya WiFi Smart IR Remote Controller IRC03 from Aliexpress is a compact universal IR blaster with USB-C and seven IR LEDs.
  • Inside, it uses a single PCB with the BK7231N SoC soldered directly on board, unlike versions that use a breakout board.
  • Well-labelled test pins on the back expose flashing access, and the pin map lists IRSend on 7, IRRecv on 8, Btn24, and WifiLED.
  • Open Beken flashing worked without problems, and the device connected to Home Assistant and operated like other IR devices.
  • The housing opens easily, but the four latches can break off during disassembly.
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  • I bought an IRC03 Universal IR remote control from Aliexpress and would like to share my experience here:

    Tuya Smart IR Remote with compatibility logos.

    Tuya Smart IR Remote Control on Aliexpress page.

    https://aliexpress.com/item/1005005942152298.html

    The device itself is small, very well designed and comes with a USB C cable. It illuminates the room well in all directions with its seven ir leds.

    Universal infrared remote control set with a USB-C cable and manual. Universal IR Remote IRC03 with USB-C Cable and Manual Back of a universal infrared remote control with technical specifications visible.

    This is the information on the packaging and in the instructions (There also seems to be a version with an integrated thermometer and humidity meter.):

    Photo of packaging with a QR code and iOS and Android labels. IR remote packaging with informational symbols. Information on the packaging of the Tuya WiFi Smart IR Remote Controller IRC03. Product specifications on the packaging of a universal infrared remote control.

    The housing is easy to open, but care must be taken as the latches (four) can easily break off.

    Two black circular case components with holes and notches. Photo of an open IRC03 Universal infrared remote control, showing the circuit board and interior casing.

    The device differs from the other documented types. It has only one circuit board and the SoC is soldered on directly without a breakout board:

    Circuit board with electronic components and LEDs. IRC03 Universal device circuit board with visible pin labels.

    As you can read on the ic, it is a BK7231N. Flashing Open Beken works without any problems. Contact is made via well-labelled test pins on the back of the board.

    Close-up of the circuit board of the IRC03 Universal remote with visible BK7231N chip. Interior of IRC03 universal remote with visible PCB and connected wires.

    The Pin layout is as follows:
    PinSetting
    7IRSend
    8IRRecv
    9Btn
    24WifiLED

    Configuration:
    Code: JSON
    Log in, to see the code


    Apart from the slightly different board, it is easy to get the device up and running with Open Beken and connect it to HA. Thanks to the easily accessible TP, everything is without any problems. The pins were quite easy to guess. Everything works as with the existing IR devices.

    Cool? Ranking DIY
    About Author
    atomphil
    Level 10  
    Offline 
    atomphil wrote 31 posts with rating 17, helped 4 times. Been with us since 2023 year.
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  • #2 20803287
    p.kaczmarek2
    Moderator Smart Home  
    Posts: 14589
    Help: 654
    Rate: 12610
    Thanks for the teardown. It's interesting to see that the manufacturer didn't solder any of the big electrolytic capacitors on that PCB.
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  • #3 20816402
    atomphil
    Level 10  
    Posts: 31
    Help: 4
    Rate: 17
    Is there a way to send raw codes? I have a number of RGB LED bulbs and fairy lights that I would like to switch with the controller. I have not found any protocols for them.
  • #4 20948893
    iff7378
    Level 6  
    Posts: 10
    Help: 1
    Rate: 2
    I just got 3 of these from Aliexpress and am struggling to flash it. I cannot get the Easy UART Flasher to get the bus. Running on Ubuntu, the flasher works great with Mono.

    I have been powering it from the USB C port and just connecting TX and RX to my programmer. I was expecting just to power cycle it by unplugging and reconnecting the USB power.

    Then I tried soldering to GND and 3.3v. Somehow simply soldering the wires to the test ports made the voltage regulator get super hot. I am certain i didn't short the 3.3V and GND pads together, but I mustve done something bad.

    Tried the second one, no luck through USB power. Soldered wires to its 3.3v and GND pads then connected it to the programmer. When trying to power cycle, as soon as I connect the 3.3v line to the programmer, it dies for an instant and the Flasher loses the serial connection. I've used this programmer to flash Tasmota a different IR device with an ESP chip and it worked great.

    These boards don't have a pad for CEN so I don't think I can do that method. Any ideas would be great. I can't figure out why powering it from USB doesn't work.

    Added after 1 [hours] 24 [minutes]:

    Screenshot of BK7231 Easy UART Flasher program showing Reading failed error.

    Success kinda...I got the bus connected. The RST test point is the CEL pin so I used that to reset the chip.

    But now its unable to read the firmware on the chip? Tried all 3 baud rates with no success. The slower baudrate, 115k didnt work with the same failed to read. The faster one wasn't able to set the baud rate.
  • #5 20950309
    p.kaczmarek2
    Moderator Smart Home  
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    Hello @iff7378 . I haven't tried the flasher on Mono. Please try hid_download_py approach:




    Added after 21 [seconds]:

    https://github.com/OpenBekenIOT/hid_download_py
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  • #6 20950671
    iff7378
    Level 6  
    Posts: 10
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    Edit - I got this working, read to the end!

    I tried the python program and was able to read the firmware but got a CRC check failed at the end.

    I then tried to write the firmware using:
    (env) ian@ian-XPS-15-9560:~/hid_download_py$ sudo /home/ian/hid_download_py/env/bin/python3 uartprogram OpenBK7231N_QIO_1.17.453.bin -d /dev/ttyUSB0 -w
    UartDownloader....
    programm....
    CRC not equal : |##################################################|[ 13.6k/s]


    Also got the same CRC issue. I thought this was mainly due to a BK7231N vs BK7231T issue. This IR device is certainly BK7231N as shown earlier and you can see in my command above I used the BK7231N firmware.

    Any other ideas? Much appreciate the help. At least now I was able to read and write to the chip.

    Nevermind!! I need to read the documentation :) After setting the flags correctly:

    (env) ian@ian-XPS-15-9560:~/hid_download_py$ sudo /home/ian/hid_download_py/env/bin/python3 uartprogram OpenBK7231N_QIO_1.17.453.bin -d /dev/ttyUSB0 -s 0x0 -u -w
    UartDownloader....
    programm....
    Write Successful: |##################################################|[ 13.8k/s]

    Thanks for the help!
  • #7 20950838
    p.kaczmarek2
    Moderator Smart Home  
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    I am glad to hear that the problem is resolved, let me know if anything else is needed
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  • #8 20974443
    jkwim
    Level 13  
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    I have the same product with the same PCB version.

    Just that the screen printing is messed up (text reversed)

    Yours:
    Round printed circuit board (PCB) with various pin labels and components.

    Mine:
    Blue round circuit board with USB-C port on top and a button at the bottom.

    Having seen the letters SI & SO clearly, I began to investigate more as these could be the MOSI and MISO pins.

    Photo of the back side of a PCB with reversed silkscreen text.

    Recently there was an updated discussion about using MOSI pin for driving WS2812B LED strip.

    So I was interested in finding out whether this IR device also can work as a WS2812B LED Driver.

    Read more here.

    This is my attempt to map the connections from the chip side:
    Diagram and photos of PCB with highlighted pins of the BK7231T chip.

    However so far I have not been able to establish the connectivity to the Test Pad using continuity testing.

    This is something that I want to pursue as then I can make this device also dual purpose.
  • #9 20974503
    p.kaczmarek2
    Moderator Smart Home  
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    @jkwim please set P16 to AlwaysHigh, check with multimeter is pad 3.3V. Then set to always low, check again for 0.0V on the pad.

    It's possible that those pads are not P16.

    Please consult SPI flashing tutorial: https://www.elektroda.com/rtvforum/topic3931424.html
    SPI flashing is also using SPI protocol, but in this case, for flashing, the pins used are P20, P21, P22, P23 (SCK, CSN, SI and SO).
    So, it's very possible, that you have the "flashing SPI port" there, not the "output SPI", sadly.
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  • #10 21183559
    Cramp1017
    Level 4  
    Posts: 10
    Rate: 2
    Hi, I lost my original Tuya firmware backup for this device. Can anyone share their own backup so I can go back to factory? (I want to give the device away)
  • #11 21201546
    jkwim
    Level 13  
    Posts: 186
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    Rate: 25
    p.kaczmarek2 wrote:
    @jkwim please set P16 to AlwaysHigh, check with multimeter is pad 3.3V. Then set to always low, check again for 0.0V on the pad.

    It's possible that those pads are not P16.

    Please consult SPI flashing tutorial: https://www.elektroda.com/rtvforum/topic3931424.html
    SPI flashing is also using SPI protocol, but in this case, for flashing, the pins used are P20, P21, P22, P23 (SCK, CSN, SI and SO).
    So, it's very possible, that you have the "flashing SPI port" there, not the "output SPI", sadly.


    I revisited the P16 issue hoping to connect some WS2812 LEDs to the unit.

    I was hoping to find a connectivity to Pin 12 of the Chip which is designated as P16

    PCB with a microcontroller and pin connection diagram, highlighting pin 12 labeled as TCK/F_SCK.

    I found that PIN 12 is connected to the pad labelled TCK/F_SCK.

    Close-up image of circuit boards showing PIN 12 and TCK/F_SCK connections.

    I verified the continuity between PIN 12 and this pad.

    Then I connected a WS2812 LED Ring as shown in the following picture:

    Close-up of the back side of a round printed circuit board with connected wires.

    Screenshot of a selection menu with two options for P16 and P17 in the interface.

    The LEDs do not get lit up after loading the driver using command:
    Code: text Expand Select all Copy to clipboard
    startDriver SM16703P


    User interface for controlling LED lights.

    Wonder what am I doing wrong here.
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  • #12 21201631
    p.kaczmarek2
    Moderator Smart Home  
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    See related topic:
    https://www.elektroda.com/rtvforum/topic4057187.html
    You need to at least have SM16703P_Init called as well:
    Code: text Expand Select all Copy to clipboard
    
startDriver SM16703P
SM16703P_Init 16 
startDriver PixelAnim
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  • #13 21202017
    jkwim
    Level 13  
    Posts: 186
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    jkwim wrote:
    I was hoping to find a connectivity to Pin 12 of the Chip which is designated as P16



    I found that PIN 12 is connected to the pad labelled TCK/F_SCK.


    Can you confirm whether my interpretation of pin layout is correct here?

    When I look at the chip orientation, PIN 12 is on to the right hand side, 4th pin from bottom.

    The screen print on the device (Which is anyway printed in reverse) designates the pad with TCK/F_SCK which happens to be the 4th pin on the top edge of the chip if counted from left.



    Chip pin layout diagram with labels and highlighted pins.
  • #15 21202312
    jkwim
    Level 13  
    Posts: 186
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    divadiow wrote:
    because annoyingly that image is unintuitively oriented with pin 1 on the bottom left. I made the below for this thread/device https://www.elektroda.com/rtvforum/topic4066219.html

    Diagram of BK7231N chip orientation and pinout with a photo of the chip.


    Yes, I also figured it out the hard way now. So the PCB screen print is correct.

    PCB diagram showing pin labels and connection paths.

    Now I need to figure out how to solder a tiny wire strand on to PIN 12 as there are no connections from the chip for these pins.

    Image of an integrated circuit on a PCB with a pin marked by a red arrow.

    I have a fine tip soldering bit but never have attempted a job at this level before. Probably only a single wire strand will fit in there.

    Perhaps its not worth the effort.
  • #16 21203255
    divadiow
    Level 38  
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    Yes, that will be tricky. Shame the device doesn't use a CBU module with a nice easy P16 routed to a contact.
  • #17 21204580
    p.kaczmarek2
    Moderator Smart Home  
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    Routing out P16 is indeed a bit harder than soldering to a premade pad, but it's certainly possible. It has been already shown in one of the tutorials:
    How to access hardware SPI port on CB2S? P16 (MOSI) GPIO breakout method
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  • #18 21595371
    ghost320000
    Level 4  
    Posts: 6
    Tell me how to make the board flash - I'm trying to connect the RST pin to GND, but nothing happens. There is no CEN pin
  • #19 21605824
    p.kaczmarek2
    Moderator Smart Home  
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    Hey, CEN is also called CSN, do you have CSN on your board?
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  • #20 21606092
    ghost320000
    Level 4  
    Posts: 6
    [postid:78e68777c0][/postid:78e68777c0] I have a CSN pin, and I also have a RST pin, but they don't work. I'm connecting via USB to TTL - GND - GND, 3.3V - 3.3V, TXD - TXD, RXD - RXD. When I connect like this, I can see the device on the COM port. Then, when I read, I short-circuit GND to RST(CSN), but it doesn't work. I've also tried turning the power on and off during reading/flashing. I used the following programs on Windows: BK7231Flasher and ltchiptool.
    User Experience: Tuya WiFi Smart IR Remote Controller IRC03 [BK7231N] from Aliexpress
    User Experience: Tuya WiFi Smart IR Remote Controller IRC03 [BK7231N] from Aliexpress
  • #21 21606137
    p.kaczmarek2
    Moderator Smart Home  
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    Ignore CEN/CSN and just use 4 wires to flash - while getting bus, disconnect power wire for a moment
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  • #22 21606656
    ghost320000
    Level 4  
    Posts: 6
    >>21606137 I tried it, it doesn't work.
  • #23 21606662
    p.kaczmarek2
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    Is your chip BK7231T or BK7231N?
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  • #24 21606685
    ghost320000
    Level 4  
    Posts: 6
    >>21606662 BK7231N
  • #25 21606687
    p.kaczmarek2
    Moderator Smart Home  
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    So, first of all ,why do you select BK7231T in flasher?

    Maybe you need to swap RX and TX?
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  • #26 21606705
    ghost320000
    Level 4  
    Posts: 6
    [postid:41f32a06d4][/postid:41f32a06d4]
    I tried different options BK7231T, BK7231N, BK7231M - did not help.

    If I swap RX and TX, I do not see the device on the COM port at all
  • #27 21606805
    divadiow
    Level 38  
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    are you powering whole device from USB-TTL adaptor?
  • #28 21606806
    p.kaczmarek2
    Moderator Smart Home  
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    It looks like he takes 5V from USB to TTL and plugs it into 5V lane of the device, which is okay?
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  • #29 21606814
    divadiow
    Level 38  
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    hmm maybe. but this looks like VCC 3.3 is soldered up. VCC 5v is clear

    User Experience: Tuya WiFi Smart IR Remote Controller IRC03 [BK7231N] from Aliexpress
  • #30 21606836
    p.kaczmarek2
    Moderator Smart Home  
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    Oh no, he soldered 5V directly to 3.3V?
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Topic summary

✨ The discussion centers on the Tuya WiFi Smart IR Remote Controller IRC03 featuring the BK7231N chip, purchased from Aliexpress. The device is compact, well-designed, and equipped with seven IR LEDs and a USB-C cable. Users shared detailed teardowns and PCB inspections, noting the absence of large electrolytic capacitors and reversed screen printing on some units. Challenges in flashing the firmware were reported, including difficulties with Easy UART Flasher on Ubuntu and CRC check failures when using the hid_download_py tool. Successful flashing required correct flag settings and understanding of the BK7231N-specific firmware. The conversation also explored hardware pinouts, particularly the identification and access to SPI pins (P16, P20-P23) for flashing and potential use as a WS2812B LED driver. Attempts to drive WS2812 LED rings via pin 12 (P16) were made, with advice to initialize the SM16703P driver properly. Soldering to tiny chip pins for GPIO access was discussed as challenging but feasible. Users requested original Tuya firmware backups for restoration. Overall, the thread provides insights into hardware hacking, firmware flashing, and extending functionality of the IRC03 device beyond IR control.
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FAQ

TL;DR: With 4 working GPIO assignments and 7 IR LEDs, the Tuya IRC03 with BK7231N flashes cleanly through rear test pads; as one expert put it, "everything works as with the existing IR devices." This FAQ helps OpenBeken and Home Assistant users wire, flash, and troubleshoot this exact AliExpress IR blaster variant. [#20802538]

Why it matters: This thread documents a confirmed BK7231N IRC03 board, its OpenBeken pin map, safe flashing practice, and the main failure modes that stop successful recovery.

Wariant / metoda Układ lub narzędzie Wynik Kluczowy szczegół
Starszy IRC03 BK7231N Potwierdzone działanie z OpenBeken Test pady z tyłu, 1 płytka PCB
Flashowanie pod Linux Easy UART Flasher + Mono Problemy zgłaszane Niektórzy nie mogli stabilnie uzyskać magistrali
Flashowanie pod Linux hid_download_py Potwierdzony sukces Zadziałało po dodaniu -s 0x0 -u -w
Nowszy „IRC03” T1/BK7238 Inny wariant sprzętu Brak ESPHome, wymaga innej procedury

Kluczowy wniosek: Nazwa „IRC03” nie gwarantuje tego samego hardware'u. Najpierw sprawdź oznaczenie układu na PCB, bo BK7231N, T1/BK7238 i nowsze rewizje wymagają innych metod flashowania. [#21733400]

Quick Facts

  • Urządzenie ma 7 diod IR, zasilanie przez USB-C i obudowę z 4 zatrzaskami, które łatwo uszkodzić przy otwieraniu. [#20802538]
  • Potwierdzona mapa pinów OpenBeken dla tej płytki to: P7 = IRSend, P8 = IRRecv, P9 = Btn, P24 = WifiLED. [#20802538]
  • Ta rewizja IRC03 używa jednej płytki PCB i układu BK7231N lutowanego bez osobnego modułu radiowego. [#20802538]
  • Przy hid_download_py błąd CRC zniknął po zapisie komendą z flagami -s 0x0 -u -w zamiast domyślnego wywołania. [#20950671]
  • W jednej udanej naprawie problem z flashowaniem zniknął po zmianie adaptera USB-TTL z CH340 na CH341. [#21610293]

How do I flash OpenBeken on the Tuya WiFi Smart IR Remote Controller IRC03 with a BK7231N chip using the test pads on the back?

Flashowanie działa przez tylne test pady, bo ta wersja IRC03 ma dobrze opisane punkty pomiarowe. 1. Otwórz obudowę ostrożnie, bo ma 4 kruche zatrzaski. 2. Podłącz UART do test padów i użyj układu BK7231N. 3. Wgraj OpenBeken, a potem ustaw piny P7, P8, P9 i P24 zgodnie z mapą tej płytki. Autor potwierdził, że flashowanie „works without any problems” i integracja z HA przebiegła bez problemów. [#20802538]

What pin configuration works for the IRC03 BK7231N board for IRSend, IRRecv, button, and WiFi LED in OpenBeken?

Działają cztery przypisania GPIO: P7 = IRSend, P8 = IRRecv, P9 = Btn i P24 = WifiLED. To jest pełna, sprawdzona konfiguracja dla rewizji IRC03 z układem BK7231N i jedną płytką PCB. W wątku podano ją zarówno jako tabelę pinów, jak i gotowy fragment konfiguracji JSON dla OpenBeken. [#20802538]

Why does the IRC03 show a CRC check failed error when reading or writing firmware with hid_download_py, and which flags fix it?

W tym przypadku błąd CRC wynikał z użycia niewłaściwych parametrów narzędzia, a nie z błędnego doboru układu. "CRC check failed" is komunikatem narzędzia, który sygnalizuje niezgodność kontroli integralności po odczycie lub zapisie, zwykle po złym trybie, adresie startowym albo flagach transmisji. Odczyt i zapis zaczęły działać po użyciu uartprogram OpenBK7231N_QIO_1.17.453.bin -d /dev/ttyUSB0 -s 0x0 -u -w. Bez -s 0x0 -u -w użytkownik dostawał błąd CRC przy końcu operacji. [#20950671]

What is the CEN or CSN pin on BK7231N devices, and how is it used during flashing?

W tym wątku CEN i CSN zostały potraktowane jako to samo wejście sterujące używane przy próbie wejścia w tryb flashowania. Później padła praktyczna rada, by na tej płytce zignorować CEN/CSN i użyć tylko 4 przewodów UART, chwilowo odłączając zasilanie podczas „getting bus”. To ważne, bo na tym IRC03 nie ma wyraźnie podpisanego padu CEN, a metoda z samym zwarciem do GND nie zawsze działała. [#21606137]

How should I power the Tuya IRC03 safely while flashing it with a USB-to-TTL adapter to avoid regulator overheating or damage?

Najbezpieczniej zasilaj urządzenie przez USB-C, a z adaptera USB-TTL podłącz tylko GND, RX i TX. Jeden użytkownik zgłosił, że po lutowaniu do padów 3.3V i GND regulator zrobił się bardzo gorący, a inny uczestnik ostrzegł, że podanie 5V na linię 3.3V mogło uszkodzić płytkę. Ta praktyka minimalizuje ryzyko przegrzania stabilizatora i błędów zasilania podczas wejścia w bootloader. [#21606841]

Which flashing method works better for this IRC03 on Linux or Ubuntu: Easy UART Flasher with Mono or hid_download_py?

Na Ubuntu lepiej sprawdził się hid_download_py. Użytkownik zgłaszał, że Easy UART Flasher działał pod Mono z innymi urządzeniami, ale tutaj nie mógł stabilnie uzyskać magistrali ani poprawnie odczytać firmware. Po przejściu na hid_download_py udało się odczytać układ, a następnie skutecznie zapisać firmware OpenBK7231N po ustawieniu właściwych flag. [#20950671]

How do I get the BK7231N bootloader bus on the IRC03 when there is no clearly labeled CEN pad?

Na tej płytce można uzyskać magistralę bootloadera bez osobnego padu CEN. Jeden użytkownik ustalił, że test point RST odpowiada linii opisanej jako CEL, i użył go do resetu układu podczas próby wejścia w tryb flashowania. Późniejsza rada dla podobnego problemu była jeszcze prostsza: użyj tylko 4 przewodów UART i na chwilę odłącz zasilanie podczas łapania magistrali. [#20948893]

What is a CRC check failed error in BK7231N flashing tools, and what does it usually mean?

To komunikat, że narzędzie nie potwierdziło poprawności danych po transferze. W tym wątku nie oznaczał on uszkodzonego BK7231N, bo ten sam układ dał się później poprawnie zaprogramować. Zwykle oznacza złą kombinację parametrów flashowania, takich jak adres startowy, tryb zapisu albo flagi narzędzia, a nie samą identyfikację układu. [#20950671]

How can I send raw IR codes from OpenBeken on the IRC03 for RGB LED bulbs or fairy lights when no known protocol matches?

Wątek nie podaje gotowej, potwierdzonej procedury wysyłania surowych kodów IR dla takich lampek. Pytanie o RGB bulbs i fairy lights zostało zadane, bo użytkownik nie znalazł żadnych pasujących protokołów, ale w pokazanej dyskusji nie ma odpowiedzi z działającą metodą raw transmit dla tego przypadku. Pewne jest tylko to, że sprzęt ma działające IRSend na P7 i IRRecv na P8, więc sprzętowo nadajnik i odbiornik są skonfigurowane. [#20816402]

Where can I get a factory Tuya firmware backup for the IRC03, and what options are there if I forgot to save my own backup?

W tym wątku nie udostępniono żadnego backupu fabrycznego Tuya dla IRC03. Użytkownik wprost poprosił o kopię zapasową, bo zgubił własny backup i chciał przywrócić urządzenie do stanu fabrycznego przed oddaniem, ale w pokazanych odpowiedziach nie ma pliku ani linku do zrzutu. Jeśli nie zapisałeś własnej kopii wcześniej, ten wątek nie daje sprawdzonej drogi odzyskania stock firmware. [#21183559]

Why might an IRC03 stop flashing when connected through one USB-to-TTL adapter but work after switching from CH340 to CH341?

Najkrótsza odpowiedź brzmi: adapter USB-TTL bywa przyczyną problemu, nawet gdy okablowanie wygląda poprawnie. W tym przypadku użytkownik zgłaszał, że wcześniejsze próby nie działały, a potem napisał, że po wymianie CH340 na CH341 urządzenie udało się sflashować. To wskazuje na problem zgodności lub stabilności konkretnego konwertera UART, a nie samego IRC03 z BK7231N. [#21610293]

How do I identify whether an Aliexpress 'IRC03' IR blaster actually contains a BK7231N, BK7238/T1, or some other Tuya chip revision?

Sprawdź nadruk na samym układzie scalonym po otwarciu obudowy, bo nazwa aukcji nie wystarcza. Wątek pokazuje co najmniej dwa warianty: starszy egzemplarz z BK7231N oraz nowszy z oznaczeniem T1-AHL, które uczestnicy powiązali z BK7238. Jeśli widzisz T1/BK7238 zamiast BK7231N, procedura i zgodność z firmware będą inne. [#21733400]

What differences were reported between older IRC03 boards and newer versions with reversed silkscreen or different chips, and how do those changes affect flashing?

Zgłoszono trzy różnice: starszą płytkę z BK7231N, rewizję z odwróconym silkscreenem oraz nowszy wariant z układem T1/BK7238. Odwrócony nadruk utrudnia mapowanie pinów i orientację układu, ale nie zmienia samego faktu, że to nadal podobna płytka. Zmiana układu jest ważniejsza: dla T1/BK7238 padła wprost informacja, że ESPHome nie działa, a OpenBK wymaga dodatkowego kroku. [#21733400]

How do I use P16 on this IRC03 PCB to drive WS2812 LEDs, and what OpenBeken commands like SM16703P_Init and PixelAnim are needed?

Aby użyć P16, trzeba najpierw fizycznie wyprowadzić ten pin, bo na tej płytce nie ma wygodnego padu użytkowego. Jeden uczestnik ustalił, że pin 12 układu łączy się z polem opisanym TCK/F_SCK, ale same LED-y nie ruszyły po samym startDriver SM16703P. Zadziałać powinien zestaw poleceń: startDriver SM16703P, potem SM16703P_Init 16, a na końcu startDriver PixelAnim. [#21201631]

What are test pads and SPI flashing pins such as SCK, CSN, SI, and SO on the BK7231N IRC03 board, and how do they relate to features like flashing or LED control?

Test pady to odsłonięte pola lutownicze, które dają dostęp do sygnałów serwisowych bez wylutowywania układu. W tym wątku wyjaśniono, że piny P20, P21, P22, P23 odpowiadają za SPI używane do flashowania jako SCK, CSN, SI i SO. To ważne ograniczenie: obecność tych padów nie oznacza od razu wolnego „output SPI” do sterowania LED, bo mogą być podłączone tylko do portu flashującego. [#20974503]
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