I recently got a SiGN WiFi Smart Indoor Plug 16A with 20W Fast Charging (2xUSB A and 1xUSB C). I have seen similar models on Ali.
Warning: It is not easy to open the plug as it is glued together, and it is a bit cumbersome to get access to the CB2S module on the inside.
I used a hobby knife and some prying tools to open up the plug. I tried to do it carefully, but I could not avoid some damage.
After successfully opening up the plug, I removed the screws below to take the plug further apart:
The plug is featuring a CB2S module:
I desoldered the green and yellow cable:
Next up, I desoldered this thingy. There are some plastic bits underneath the board that needs to be pressed for the thingy to detach.
Now it is time to desolder the metal plugs to get the board detached:
Now the board is finally detached:
And there is access to the CB2S pins. I soldered four cables to the module (3.3V, GND, RX, TX).
I could download the firmware (attached to this post), but the OBK config could not be extracted. However, I found this as part of the lastRawDecryptedStrings.bin file that has some clues regarding the important pins:
Here is the OBK template:
In addition I have the following in autoexec.bat:
I hope somebody will find this post useful
AI: Just to clarify, are you looking for help with configuring the OBK template for this plug, or did you just want to share your findings with the community?
I want to share my findings and the OBK template
AI: Is there a specific issue or question you have regarding the pinout, OBK template, or getting the plug working with OpenBeken?
No
Warning: It is not easy to open the plug as it is glued together, and it is a bit cumbersome to get access to the CB2S module on the inside.
I used a hobby knife and some prying tools to open up the plug. I tried to do it carefully, but I could not avoid some damage.
After successfully opening up the plug, I removed the screws below to take the plug further apart:
The plug is featuring a CB2S module:
I desoldered the green and yellow cable:
Next up, I desoldered this thingy. There are some plastic bits underneath the board that needs to be pressed for the thingy to detach.
Now it is time to desolder the metal plugs to get the board detached:
Now the board is finally detached:
And there is access to the CB2S pins. I soldered four cables to the module (3.3V, GND, RX, TX).
I could download the firmware (attached to this post), but the OBK config could not be extracted. However, I found this as part of the lastRawDecryptedStrings.bin file that has some clues regarding the important pins:
{
sel_pin_pin: 23,
rl1_lv: 1,
bt_type: 0,
net_trig: 1,
jv: 1.0.3,
netled1_lv: 0,
netled_reuse: 1,
ffc_select: 0,
total_bt_pin: 6,
vi_pin: 8,
total_stat: 2,
resistor: 1,
over_cur: 16500,
rl_type: 0,
reset_t: 5,
netled1_pin: 10,
chip_type: 0,
rl2_lv: 1,
lose_vol: 176,
over_vol: 265,
module: CB2S,
ele_pin: 7,
ch_cddpid1: 9,
rl2_pin: 24,
ch_cddpid2: 10,
total_bt_lv: 0,
ch_num: 2,
ele_fun_en: 1,
rl1_pin: 26,
vol_def: 0,
ch_dpid1: 1,
sel_pin_lv: 1,
ch_dpid2: 2,
crc: 2
}
Here is the OBK template:
{
"vendor": "SiGN",
"bDetailed": "0",
"name": "SiGN WiFi Smart Indoor Plug 16A with 20W Fast Charging",
"model": "SN-WIFIPLUG",
"chip": "BK7231N",
"board": "TODO",
"flags": "1024",
"keywords": [
"TODO",
"TODO",
"TODO"
],
"pins": {
"6": "Btn;39",
"7": "BL0937CF;0",
"8": "BL0937CF1;0",
"10": "LED_n;39",
"23": "BL0937SEL;0",
"24": "Rel;39",
"26": "Rel;37"
},
"command": "",
"image": "https://obrazki.elektroda.pl/YOUR_IMAGE.jpg",
"wiki": "https://www.elektroda.com/rtvforum/topic_YOUR_TOPIC.html"
}
In addition I have the following in autoexec.bat:
alias mode_wifi setPinRole 10 WifiLED_n
alias mode_relay backlog setPinRole 10 LED_n; setPinChannel 10 39
// at reboot, set WiFiLEd
mode_wifi
// then, setup handlers
addChangeHandler WiFiState == 4 mode_relay
addChangeHandler WiFiState != 4 mode_wifi
startDriver ntp
ntp_timeZoneOfs 1:00
I hope somebody will find this post useful
AI: Just to clarify, are you looking for help with configuring the OBK template for this plug, or did you just want to share your findings with the community?
I want to share my findings and the OBK template
AI: Is there a specific issue or question you have regarding the pinout, OBK template, or getting the plug working with OpenBeken?
No
