Z-IOT IOT_V1.2 D250609 A9 Cam - Blue PCB with SuperPix SP0828 Sensor, Taixin TXW817

This A9 PCB has already been seen here https://www.elektroda.com/rtvforum/topic4118499-60.html#21703243 and https://www.elektroda.com/rtvforum/topic4033757-150.html#21703262 but here's a few more pics, boot log from mine, Z-IOT CAM app pics. Further discoveries to be posted as and when

Both mine shipped with SuperPix SP0828 320x240 sensor.



OpenTXW81X supports SP0828 now as of PR 1818 https://github.com/openshwprojects/OpenBK7231T_App/pull/1818 but RTSP image is in portrait mode.

pics dump



boot log from 'DP' pad (HSDP/PC6) at 115200 (usually 921600 on Taixin)



AP broadcast


Z-IOT CAM app offers streaming capability with device in AP mode but 'remote' mode is chargeable. No thanks.



Interesting it offers OTA update. Other A9 apps have the ability to check for and offer updates it seems, but this is the first I've seen actually have one available.



Download attempts have so far been unsuccessful, repeating these firmware-version/progress?uid=xxxxx requests to ipc.gps555.net



1mb fw dump: https://github.com/openshwprojects/FlashDumps...mits/216759eaaa17d7335776f4cbcf7e881a77811658

Added after 54 [minutes]:

in some efforts to get more info using my bearer token, here's an interesting response that shows a variety of cams, their sensors and capabilities.

GET http://ipc.gps555.net/api/v1/ipc-function


my device specifically
GET http://ipc.gps555.net/api/v1/ipc/336209408818


Added after 10 [minutes]:

ota file link seems dead
http://sig.gps555.net/otabin/TXW817_D_V1.0.0.14.bin

PA06 - Blue LED
PA08 - function button - works OK as standard Btn role
PA12 - power button - no ack to pushes if set as Btn. Btn_n = Info:GEN:12 Button_OnLongPressHold

Not sure at the moment how the power button and red LED are to be set, controlled, linked.

PC02 - sensor SCL
PC03 - sensor SDA

Hey @divadiow

Seems I purchased the same A9 mini cameras with the Z-IOT
Did you successfully flash it using: https://github.com/openshwprojects/OpenBK7231T_App

Does it offer an RTSP stream afterwards? So it can be accessed locally when connected to Wi‑Fi?
Still need to read that project; not sure what the flash actually does. Does it provide a new UI?

pergolafabio wrote:

Did you successfully flash it using: https://github.com/openshwprojects/OpenBK7231T_App

no. read/write flash is not possible via UART - requires 2-wire cJTAG (?) CK-Link connection - P10 (DebugCLK), P9 (DebugIO)

CK-link Lite can be made easily with STM32 - https://www.elektroda.com/rtvforum/topic4120455.html - program STM32 via J-Link or UART

Reading/writing with T-Head Debug Console or C-SKY Flash Programmer (easier): https://www.elektroda.com/rtvforum/topic4123724.html

other TXW threads
https://www.elektroda.com/rtvforum/topic4121456.html
https://www.elektroda.com/rtvforum/topic4145146.html
https://www.elektroda.com/rtvforum/topic4124009.html
https://www.elektroda.com/rtvforum/topic4147085.html

development progress seen through this thread https://www.elektroda.com/rtvforum/topic4033757.html

yes to RTSP streaming after starting the txwcam driver from OpenTXW once flashed (assuming driver for your cam is present). OpenTXW GUI offers no real connection to the video of the cam - it'll allow you to control buttons, LEDs and start the cam driver. No video window in the GUI. No SD card support.

Ah, cool. Stuff to read, going to order the chips for flash with jk link.
What do you mean by txwcam driver?
Once it's flashed, I can just open the RTSP stream from any client, right? Or with VLC viewer?

pergolafabio wrote:

What do you mean by:
txwcam driver

once flashed and you have access to OpenTXW, you then run command 'startdriver txwcam' which will initialise the sensor if supported - eg https://www.elektroda.com/rtvforum/topic4121456.html#21648395

any external rtsp client should be OK I think

Ok. My hardware arrived to create the flash , like STM...
I didn't open the A9 yet, but can you tell me where I can find those ?
P10 (DebugCLK), P9 (DebugIO)
I don't see it in your posts. Or is it obvious when I open the cam? I also need to connect GND , right?

pergolafabio wrote:

I didn't open the A9 yet, but can you tell me where I can find those ?
P10 (DebugCLK), P9 (DebugIO)

identification of these will depend on the PCB inside the cam. There's a reasonable chance they've already been identified and there is a labelled picture in one of the posts. Open it up and take a pic?

pergolafabio wrote:

I also need to connect GND , right?

for when it comes to connecting up STM32 (converted to CK-Link Lite) to the A9 PCB, yes, a shared ground between the STM32 and the A9 cam ground will be needed.

hey @divadiow , opened it up, it's identical as yours, same numbers
i was able to find GND , also the P10 and P9 , let's hope i have steady hands to solder

Added after 23 [minutes]:

ok, further reading before soldering
since i have the same board as you
what firmware do i need to flash?

i see other people flashing txw81x_v2.5.2.6-31320_2025.5.25_IOT_AT_PC6-PC7.bin on this board?
also some this one? => OpenTXW81X_1.18.221.bin
i also notice this one: txw81x_v2.5.2.6-31320_2025.5.11_IOT_AT_PA1-PA2.bin


What are those differences?

thnx for all info, appreciated!

https://github.com/openshwprojects/OpenBK7231T_App/releases

The firmware to be flashed will be in the releases list, currently OpenTXW81X_1.18.279.bin. Those other files you listed are just AT demo builds with different RX/TX pins set on each.

Don't forget to take flash backup first https://www.elektroda.com/rtvforum/topic4123724.html

wow, it worked, succesfull flashed 2 cams!!
Now i need to see how i can confire the led
also , if remove the usb cable, seems it immediately disconnects.shutdowns, it doesnt use the battery