[BK7231N/CB2S] Elworks smart dual socket - teardown, CB2S, BL0937
Bought a Tuya based dual smart socket here in Denmark for approx. 15 €, somewhat the same price as on Aliexpress.
Quite easy to separate top and bottom parts with a hobby knife and a small screwdriver:
To flash the BK7231N I needed to separate the plug part from PCB in order to reach 3V3, GND, RX1, TX1 and CEN on the CB2S module:
I used the BK flasher with the following setup:
The flash program was able to extract the Tuya parameters from the original firmware,
and from the "Launch Web application" page, I got the nice {json} script:
--.-.-.-.-.--
Quite easy to separate top and bottom parts with a hobby knife and a small screwdriver:
To flash the BK7231N I needed to separate the plug part from PCB in order to reach 3V3, GND, RX1, TX1 and CEN on the CB2S module:
I used the BK flasher with the following setup:
The flash program was able to extract the Tuya parameters from the original firmware,
and from the "Launch Web application" page, I got the nice {json} script:
Code: JSON
--.-.-.-.-.--
Comments
Thank you for submitting the template. It seems you've forget about the device model - CLY809M-GE - but I've added it for you. Device should be soon live at: https://openbekeniot.github.io/webapp/de... [Read more]
@snusken I have a Nedis WIFIP141FWT double smart plug, which looks identical to yours when opened, so I'm thinking your work applies, and would like to test it out. Thanks for your write-up. Did you have... [Read more]
Hello Chris, As far as I remember, I used my old 100 W Weller solder gun and some solder wick to free the input mains pins from the PCB. best regards, Erik ( living place Sønderborg :) ) [Read more]
Thanks. I won't have time today, but hopefully after new years eve :) [Read more]
Hi again. When trying to just read out the firmware, using BK7231GUIFlashTool, it starts reading as soon as I trigger CEN for a short perioed, but then, at what seems as a random time later, it hangs,... [Read more]
Are you sure about that high speed baud setting? Such high speeds never worked reliably for me. [Read more]
Thank you for taking your time to answer. I tried lowering it to 912600, but then got nothing, and from snuskens image of the flasher, he also had 1500000 set. But it might as well be bad soldering on... [Read more]
Took the PCB with me to work, and had a friendly colleague solder some wires on. Lowered the baud rate to 921600, but it still stopped half way, but at least it got something. Lowered it to 115200, and... [Read more]
Good job! Sure, can you share Nedis template in JSON format, as copied from Web App? [Read more]
This is from the web-app's Config menu, when accessing the device through: IP/app { "vendor": "Tuya", "bDetailed": "0", "name":... [Read more]