Nous Smart Socket A1 (BK7231)
The Nous Smart socket A1 contains a BK7231N and BL0942 power monitor. The BK7231N is soldered to one of the pcbs and is not on a separate module.
Disassembly of the device is easy as there is a triangular screw under a paper label stuck onto the transparent plastic part of the socket.
Inside are 3 pcbs, one contains a switched mode 12V power supply, an intermediate board has the device relay and a S47B dc/dc power supply providing 3.3V to the top board that contains the BK7231N and BL0942.
Flashing the chip is achieved using the python uploader
Connections are as the same as described in the Qiachip Smart Switch - BK7231N / CB2S - interior, programming post with the exception of the 5V supply which is 3V3 from the 3V3 connection on the USB dongle.
I also had to add a 10K pullup resistor from CEN to 3V3 and a switch to pull down to 0V to reset.
Connections on the unit are:
Relay: P26
Switch: P9
LED: P6
There are mountings on the device for 3 leds although only D3 is mounted. The other leds are all wired in parallel.
The BL0942 calibration program works correctly as described elsewhere.
The power detect is the feed to the BL0942
Disassembly of the device is easy as there is a triangular screw under a paper label stuck onto the transparent plastic part of the socket.
Inside are 3 pcbs, one contains a switched mode 12V power supply, an intermediate board has the device relay and a S47B dc/dc power supply providing 3.3V to the top board that contains the BK7231N and BL0942.
Flashing the chip is achieved using the python uploader
Connections are as the same as described in the Qiachip Smart Switch - BK7231N / CB2S - interior, programming post with the exception of the 5V supply which is 3V3 from the 3V3 connection on the USB dongle.
I also had to add a 10K pullup resistor from CEN to 3V3 and a switch to pull down to 0V to reset.
Connections on the unit are:
Relay: P26
Switch: P9
LED: P6
There are mountings on the device for 3 leds although only D3 is mounted. The other leds are all wired in parallel.
The BL0942 calibration program works correctly as described elsewhere.
The power detect is the feed to the BL0942
Comments
To tłumaczenie jest bez sensu. What kind of python uploader? The title of this article (in Polish) is about firmware updates, but there is hardly anything about it in the article itself. [Read more]
Doesn't it use OpenBK7231T developed by our colleague @p.kaczmarek2? [Read more]
Yes it uses the firmware OpenBK7231T - in this case it's an N chip so uses the N SDK. I tried to post links but I can't as I don't have enough posts. Sorry, my Polish, like my Greek is zero. It would... [Read more]
By the way, what is that antenna in the patch? It rips horribly on removal. [Read more]
On the unit I have it is a very thin plastic, what is known as a flexible PCB. It might have changed since I had my device which was in 2022. [Read more]
Welcome, Thanks for sharing, it saved me a lot of time with investigating where the power is.... I programmed this into homessistent, esphome below my config file. I got into programming mode by turning... [Read more]
Can you show a close-up of where you soldered? In my case, part of it is covered by black "tape" [Read more]
Hi, TX2 RX2 are side by side at my place they were not sealed.... i have it already sealed i am waiting for another such plug maybe then i will throw you in [Read more]