[BK7231T - WB2S] ANTELA WiFi power plug with energy monitoring (BL0937)

No chance to open the device without damage.
The plug - bought at Amazon, seems to be a bit different from the one described in #1:
The housing seems to be a bit different and so the chipset, but it's called "ANTELA Smart Plug Model: F1s202-EU", too (even on the housing bottom).
It seems that it really is a BK7231n, not BK7231t. Thoughts in my message #18 were wrong, it was a hw prob...
The config for the device changed, too.

Here's my complete setup:

Cloudcutter
1. Flash 3rd Party Firmware
2. From device-profiles (i.e. custom profile)
3. tuya-generic-fs-02we-1ch-16a-smart-switch-with-energy-monitoring
4. OpenBeken-v1.17.130_bk7231n.ug.bin
5. Put device in AP (slow blink) mode
6. Put device in AP (slow blink) mode again
---
Configure Module
P7 (PWM1) Btn 0
P8 (PWM2) Rel 0
P10 (RXD1) LED 0
P11 (TXD1) BL0937SEL
P24 (PWM4) BL0937CF1
P26 (PWM5) BL0937CF

Hello, can you paste the config here in JSON format? And, if possible, include Tuya config partition or 2MB flash backup.
https://www.youtube.com/watch?v=WunlqIMAdgw&ab_channel=Elektrodacom

Unfortunately not.
As i told: One plug didn't start, so i have to send back the whole 4 plugs for refund.

Finally i got 4 new devices and flashed them with effort.
JSON:


But where do i get the config partition or 2MB flash backup?

It seems to be a bit difficult using the plugs with MQTT2 in FHEM:
There were some strange answers in the Current/Active Power/Apparent Power/Reactive Power/Power Factor/Energy Total section.
The "inf" and "nan" answers from the device aren't very helpful.

And: Which Flags should be enabled to get/set most of the possibilities of the plug under MQTT ?
Under Tasmota (Theo Arends) flashed devices aren't such probs...

The JSON you posted is actually the config partition, just decoded. The 2MB flash backup is generated by our flash tool when flashing by wires.

I don't know the MQTT2 in FHEM plugin, can you post some screenshots? Are you using our Tasmota JSON emulation? Which values are NAN?

Sorry, but flashing by wires isn't possible without bricking the device.
Initially nan is in: Current/Active Power/Apparent Power/Reactive Power/Power Factor/Energy Total, but i managed to get numbers in the responses. After applying values in Voltage, Current and Power i got reasonable values.
Think it could be helpful if the init value isn't nan, but 0?

The FHEM MQTT2 server is similar to Mosquitto, but a special one only for the FHEM home automation software.
You can find more of the meaning of FHEM in https://fhem.de/.
MQTT clients can automaticallly be configured by pre-built templates. I'm still working on such a template with some effort.

The Tasmota software built by Theo Arends has some different MQTT-names like "tele/sonoff/LWT" or similar.
Some of the device responses can be modified by parameters, that could be very helpful.

Another strange behaviour:
After a reboot of the plug the relay is always in the "off" state, regardless what i've done before.
Current value of the flags=1075840192.
What has to be done for remembering the switch state?

The default state can be configured in Config->Configure startup. By default, initial state is 0, so relay is off.

The Tasmota topics emulation can be enabled in flags, by enabling the "TELE" flag. This will publish things required by ioBroker, etc. LWT is not yet supported.

If you are getting NAN measurements, this may mean that the calibration was wrong at some point of time. Use:

to reset the energy counter stats.

If you are not getting yesterday consumption, please enable NTP driver in short startup command or autoexec.bat and then also use:

Here you can see someone's command line setting:
https://www.elektroda.com/rtvforum/topic3979823.html#20591726

That's simple, thanks.
Is it posible to put that command in the startup command line like "backlog startDriver NTP; ntp_setServer 192.168.0.1; ntp_timeZoneOfs -2; setChannel 0 -1"?

Yes, but:

Will not work. You can set relay channel to only 1 or 0.

If you want to set a channel start value from script, you can use:

Which is the same as setting it in Config->Startup.

See our commands list:
https://github.com/openshwprojects/OpenBK7231T_App/blob/main/docs/commands.md
See autoexec examples:
https://github.com/openshwprojects/OpenBK7231T_App/blob/main/docs/autoexecExamples.md

Perfect, thank you.

Hey, has anyone measure resistors near the BL0937 component? I would like to know to have a correct voltage divider ratio. Thanks!

One additional general question:
Is it possible to switch the device in AP mode via button for reconfiguring it in a different WLAN environment?
In Tasmota you have to push and hold the button for approx. 40 seconds,

Of course, but Tasmota 40 second hold is problematic because if you configure button incorrectly, it will always reset itself. We have another mechanism. As per our faq:

Read more on: https://github.com/openshwprojects/OpenBK7231T_App/blob/main/docs/faq.md

Just found the solution
Thanks again for help.

Are there any plans to support the LWT flag in the future like in Tasmota?

Bon

I found a way to open them without damaging the case, you need to "pinch it on the female side", and slowly (gently) tap with a small hammer on the metal connections of the plug (male side), it pops up without any damage.

Also, I read that it was not possible to flash directly on wires without bricking... Beuh... Sorry, did it in 115200 baud, worked well.

I'm just facing a problem : Even when set "OFF", the lights still lighten a bit, reallly really strange, I don't know how to solve this.
The relay works well, reacts well, but when set offline, it seems the current still pass through the mosfet a bit...

Did you faced this issue ?

Added after 1 [hours] 11 [minutes]:

Look at this, even when on "Off", it keep on having current passing by

Having non-zero current measurement was reported in the past and it seemingly also happens on Tasmota. Tasmota solves it with force-setting current to zero when relay is open, and we have the same option:

You can go to flags and enable flag 38.
See more our docs here:
https://github.com/openshwprojects/OpenBK7231T_App/blob/main/docs/flags.md

What do you mean by "light a bit", are you talking about the LED on the device, or about the connected appliance?

"Light a bit" --> The connected appliance... While I never checked if it was the case "before" flashing the device.
I would be surprised it would be the case as I cleary hear the "Tic" from the relay disconnecting the current.

But if I unplug the appliance, then it goes completely down, while just plugging it in (with the realy still on "Off") still gives a bit of power to the appliance (Leds are lighting a bit).

In fact, I use the relay for my christmas tree And all the lights on the tree keep on light really lightly.
I'll try to make a video showing you

I bought 4 of those and managed to upgrade them to openbk OTA using tuya cloudcutter very easy (I managed to brick one unit).
Wonderfull so I bought another 4. An patched them as well without a problem.
Both those sets the to units was sitting beside eachother in the package.

But as they are dirt cheap I bought another 8 of those.. But the new one where with another package, they were stacked on eachother. Smarter package
BUT tuya-cloudcutter are not able to upgrade the firmware.. My best guess is that they somehow changed the firmware.

So this is part warning of the new model of the unit, partly wonder if someone figured out how to use cloudcutter on thme.

Flashing by wires is very, very easy. Everyone can do it, you just need some basic cheapest equipment that can be bought from China. Please check out our Elektroda tutorials here: https://www.youtube.com/@elektrodacom , for example that one, it was done with cheapest soldering iron from Ali:

is there any knowledge about ANTELA Smart Plug+USB+TypeC (CLY8101U-GE) ?



Some information or help would be appreciate.

You can check firmware on the tuya app. maybe cloudcutter would work. If not, check the mac address on the router it will reveal the manufacturer. If it's one of the supported ones, then it most likely can be flashed by soldering. But I did not see teardown of this, might be tricky ir not.

Hello @denisrobel , some time has passed, are there any news on the CLY8101U? Have you tried getting a 2MB backup from one or doing a teardown? I would love to add this device to our database, so I'm eager to learn more about it!