[BK7231T] My HTTP server, configurator, MQTT support from Home Assistant

Dark Man wrote:

I found a great deal on smart sockets with current measurement and 20A relay for $2.99 with free shipping in 11 days:
US$2.99 82%OFF | Tuya 16A 20A EU Smart Socket WiFi Smart Plug With Power Monitoring Timing Function Voice Control Alexa Google Assistant
https://a.aliexpress.com/_EuI37V5

Nice, but:

1,000+ orders

I ordered 1 pc. and it turned out that this is also the limit for one account.

It didn't work for me on any of the accounts (mine or family members), I had to try it on a clean browser. It's weird. After all, I recently ordered a smart socket from aliexpress 2 years ago.

Bought for PLN 20, thank you for the link, it will be useful for making another video for the Elektrody channel:
https://www.youtube.com/@elektrodacom

Picked up this security light. https://www.amazon.com/dp/B0BB1KHTF7

Vendor said they used esp32. Unfortunately not the case. RTL8720CM. I don't understand why they have a separate zigbee/ble chip. https://wiki.telink-semi.cn/wiki/chip-series/TLSR825x-Series/

Dark Man wrote:

I found a great deal on smart sockets with current measurement and 20A relay for $2.99 with free shipping in 11 days:
US$2.99 82%OFF | Tuya 16A 20A EU Smart Socket WiFi Smart Plug With Power Monitoring Timing Function Voice Control Alexa Google Assistant
https://a.aliexpress.com/_EuI37V5

The socket has arrived.
I tried to upload the soft via Cloudcutter but it turned out that there is soft v1.1.12 in the socket for which there is no exploit
I uploaded the series.

I configured for HA through Discovery, but I have a question:
How to change the precision of the sent sensor data?
e.g. the electricity meter is sent in Wh with 6 decimal places and I would like it to send in kWh with 2 decimal places.
It is possible?

Dark Man wrote:

I tried to upload the soft via Cloudcutter but it turned out that there is soft v1.1.12 in the socket for which there is no exploit

Any chance to downgrade it first?

>>20541157
Precision can be set on the HA level.

I found this project by accident and got hooked up fast Got to talk to the admin and we figured I can contribute the the community. We already did one project (GN6932 driver) almost from scratch, details in this post - https://www.elektroda.com/rtvforum/topic3971252.html

I will continue to support this project by sharing as much information as possible here and on GitHub.

Here are some of the upcoming devices that will be implemented and worked on so OBK will be more powerful and documented in the best way possible.

TM1638 - 7 segmend display driver


some of the devices for future support



And some other toys to play with, like new modules, BMP280 pressure sensor, SSD1306 OLED LCD....



I have plenty of other devices to play with as well so thank you @p.kaczmarek2 for you unselfish support and looking forward to new developments.

Welcome onboard, @DeDaMrAz . Our cooperation so far has proven to be very fruitful. I hope we can improve OpenBeken much more together.

Important update.
BK7231GUIFlashTool, this project:
https://github.com/openshwprojects/BK7231GUIFlashTool
will soon get update that allows:
- to extract Tuya config from tuya device binary (so it means you get ready gpio config)
- to modify obk config via flash tool
Here's a short preview:

Good evening, this is my first post, so I hope I'm not asking in the wrong place (I searched around and this seems like the best place to ask this question).

I recently bough a WSM16-4 Tuya device (its a 4 gang/switch with a CBU), flashed OpenBeken and it works perfectly with HomeAssistant.
Amazing job on everything done so far.

My question is if its possible to access the internal BK7231N temperature sensor and send that data over MQTT.

Hi @p.kaczmarek2
One of my wall switch (N device) stopped responding after latest ota
I removed the pcb and use serial method to flash it but I keep getting crc error
Anyway to fix this?

Are you 100% sure it's N chip? Not a T with "CB2S" or something like that marking?

Can you also check with hid_download_py?

My bet is that the memory is corrupted in the chip.
Try to read the entire memory and see if there are any errors.

p.kaczmarek2 wrote:

Are you 100% sure it's N chip? Not a T with "CB2S" or something like that marking?

Can you also check with hid_download_py?

Yes, it's a cbu (N chip)
hid_downlaod_py also gave crc error

Added after 2 [minutes]:

Dark Man wrote:

My bet is that the memory is corrupted in the chip.
Try to read the entire memory and see if there are any errors.

Could be, I've already replaced it with another spare cbu chip to get the switch working again.
will post the firmware bin later

CRC error in hid_download_py for N can be ignored currently, I think. It will be updated soon yet to do a correct CRC calculation.

Hi, just wondering is there an espnow equivalent for beken chips?
Started using tasmesh (based on espnow) on tasmota and I like how it still works by communicating directly to another esp broker even when wifi is down.

Добрый день всем участникам! Скажите пожалуйста есть ли возможность изменить прошивку для умной розетки с энергомонитором BL0937, которую купил. а в ней оказался контроллер rtl8710bn, добавили уже поддержку этого чипа?... Или стоит заказывать чип ESP?

Hi,
I have flashed on a CB3S version 1.17.509, however I cannot connect to wifi networks that have spaces in the PSK.

@alexej550271 RTL8710BN is not currently supported by OpenBeken

Не скажите, в ближайшее время планируется добавить поддержку этого модуля?

Yes, I need to get some time and I will check this out. It's just that there are many other issues and I am also constantly making new teardowns for our list:
https://openbekeniot.github.io/webapp/devicesList.html

Hi all,

I'm looking for a way to flash the WBR2 chip. I saw a post that is should be possible. Is there anything i can do to help?

Seea picture of my device.

What kind of device is that? Can you provide more information?

Is it TuyaMCU? Otherwise you will need to write a driver for that display...

Its a WiFi thermostat for a electric towel radiator. See also this manual https://cdn.webshopapp.com/shops/85556/files/432038087/english-guide.pdf

I have two devices so i decided to open up one off them. I also remove the wbr2 chip and as far ass i can tell only 3v3, ground and the tx/rx are connected so i think its tuyamcu. See also this picture.

Have you tried to do TuyaMCU communication capture?
TuyaMCU analyzer - UART packet decoder for Tuya devices - dpID detector

I can see the heartbeat but it’s not paired with the Tuya app so I can’t send command to it (is there a way I can get the chip in pairing mode?

Hello, is it possible add syslog on UDP to new firmware update ? Like Tasmota have, i want it for Loxone state read. Thanks

Sure, I can print the log to UDP for you. Can you provide any more details how it should work, which port, etc? UDP is not really reliable and may lose packets. Can you point me towards that "Loxone syslog" documentation?

In Tasmota i have this settings and it works perfectly for my integration with Loxone, i use virtual read and it reads state of relay and give it to Loxone.