Configuring AliExpress 16A USB Socket with CB2S (BK7321N) and Tuya JSON Code

mihcc 1401 3

Post #1

20939569 01 Feb 2024 16:03

Hi,

Recently I have bought this socket https://www.aliexpress.com/item/1005005583141499.html?spm=a2g0o.order_list.order_list_main.88.26e8180268ZrMC which is similar to https://www.elektroda.com/rtvforum/topic3892473.html#20014441 with some differences. Pinout is slightly different and has 3 relays.

Device configuration, as extracted from Tuya:
- Relay (channel 3) on P7
- Pair/Toggle All Button on P10
- WiFi LED on P8
- Relay (channel 2) on P24
- Relay (channel 1) on P26
Device seems to be using CB2S module, which is using BK7231N.
And the Tuya section starts, as usual, at 2023424

This is json code:

{
	"rl1_lv":"1",
	"bt_type":"0",
	"rl3_pin":"7",
	"rl3_lv":"1",
	"net_trig":"2",
	"jv":"1.0.0",
	"netled1_lv":"0",
	"netled_reuse":"0",
	"total_bt_pin":"10",
	"nety_led":"1",
	"total_stat":"2",
	"reset_t":"5",
	"netled1_pin":"8",
	"rl2_lv":"1",
	"module":"CB2S",
	"ch_cddpid1":"9",
	"rl2_pin":"24",
	"ch_cddpid2":"10",
	"ch_cddpid3":"11",
	"total_bt_lv":"0",
	"ch_num":"3",
	"rl1_pin":"26",
	"ch_dpid3":"3",
	"netn_led":"0",
	"ch_dpid1":"1",
	"ch_dpid2":"2",
	"crc":"59",
	"}4 &Agw_di{abi":"0",
	"id":"null",
	"swv":"1.1.15",
	"bv":"40.00",
	"pv":"2.2",
	"lpv":"3.4",
	"pk":"keyjup78v54myhan",
	"firmk":"keyjup78v54myhan",
	"cadv":"1.0.5",
	"cdv":"1.0.0",
	"dev_swv":"1.1.15",
	"s_id":"null",
	"dtp":"0",
	"sync":"0",
	"attr_num":"1",
	"mst_tp_0":"9",
	"mst_ver_0":"1.1.15",
	"mst_md5_0":"null",
	"mst_tp_1":"0",
	"mst_ver_1":"null",
	"mst_md5_1":"null",
	"mst_tp_2":"0",
	"mst_ver_2":"null",
	"mst_md5_2":"null",
	"mst_tp_3":"0",
	"mst_ver_3":"null",
	"mst_md5_3":"null }0Atls_ca_cnt0 .MAgw_wsm{nc_tp",
	"ssid":"null",
	"passwd":"null",
	"md":"0",
	"random":"0",
	"wfb64":"1",
	"stat":"0",
	"token":"null",
	"region":"null",
	"reg_key":"null",
	"dns_prio":"0 }{uuid",
	"psk_key":"tIifVCRMFEUE4LGN5crm9kUb2D248mljvhK09",
	"auth_key":"TaMAFMiYg6zqkGivWBaiI85WxIH9GeQx",
	"ap_ssid":"SmartLife",
	"ap_passwd":"null",
	"country_code":"null",
	"bt_mac":"null",
	"bt_hid":"null",
	"prod_test":"false",
	"fac_pin":"xjibhmsjf3hqrbcc }3Awf_start_mdll",
	"lckey":"null",
	"h_url":"null",
	"h_ip":"null",
	"hs_url":"null",
	"hs_ip":"null",
	"hs_psk":"null",
	"hs_psk_ip":"null",
	"mqs_url":"null",
	"mqs_ip":"null",
	"mq_url":"null",
	"mq_ip":"null",
	"ai_sp":"null",
	"ai_sp_ip":"null",
	"mq_psk":"null",
	"mq_psk_ip":"null",
	"lp_url":"null",
	"lp_ip":"null",
	"time_z":"null",
	"s_time_z":"null",
	"wx_app_id":"null",
	"wx_uuid":"null",
	"dy_tls_m":"0",
	"cloud_cap":"0",
	"psk21_key":"null }ok5A0000038zlb[{type",
	"mode":"rw",
	"property":"{type",
	"{type":"obj",
	"max":"86400",
	"scale":"0",
	"step":"1",
	"type":"value}",
	"maxlen":"255}",
	"index":"0}@Amf_test_closetrueDNMAgw_ai{key",
	"m3nc_tp":"0"
}

OpenBeken template:

{
  "vendor": "Tuya",
  "bDetailed": "0",
  "name": "Full Device Name Here",
  "model": "enter short model name here",
  "chip": "BK7231N",
  "board": "TODO",
  "flags": "0",
  "keywords": [
    "TODO",
    "TODO",
    "TODO"
  ],
  "pins": {
    "7": "Rel;3",
    "8": "LED;0",
    "10": "Btn_Tgl_All;0",
    "24": "Rel;2",
    "26": "Rel;1"
  },
  "command": "",
  "image": "https://obrazki.elektroda.pl/YOUR_IMAGE.jpg",
  "wiki": "https://www.elektroda.com/rtvforum/topic_YOUR_TOPIC.html"
}

And some pictures

Added after 18 [minutes]:

Because I am new with openbeken I'am seeking some help.
I don't know if I'm doing something wrong:
1. It appears that LED light shows as Button. If I toggle the blue light turns on and off, without any relay changes
2. Btn Toggle All is missing in web gui
3. Is it possible to include Btn toggle all to Home Assistant using mqtt?
4. How can I configure the relay's last state? After wifi reconnects, Relay 0 is switched on, but USB relays are off.

Thank you

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About Author

mihcc mihcc

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mihcc wrote 2 posts with. Been with us since 2023 year.

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#2 20940161 01 Feb 2024 21:27

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home
Helpful post? (0)

Post #2
20940161 01 Feb 2024 21:27

Thank you for posting the teardown. I can try to help with your issues:
mihcc wrote:

1. It appears that LED light shows as Button. If I toggle the blue light turns on and off, without any relay changes

That's how you have it configured:
Code: text Expand Select all Copy to clipboard
"pins": { "7": "Rel;3", "8": "LED;0", "10": "Btn_Tgl_All;0", "24": "Rel;2", "26": "Rel;1" },

I would rather suggest changing LED role to WiFiLED_n.

mihcc wrote:

2. Btn Toggle All is missing in web gui
3. Is it possible to include Btn toggle all to Home Assistant using mqtt?

Toggle all is for physical buttons, you are the first one to request having it on GUI. Still, I can add it, if you think that may be useful. That being said, I'll just note here that's the same as in Tasmota, I haven't seen Tasmota having "toggle all" on GUI.

mihcc wrote:

4. How can I configure the relay's last state? After wifi reconnects, Relay 0 is switched on, but USB relays are off.

You can either use "Configure startup" menu to setup start value as 0, 1 or "remember last state" (-1), or you can script it in autoexec.bat

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

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#3 20940833 02 Feb 2024 11:45

mihcc mihcc

Level 2

Topic author Helpful post? (0)

Post #3
20940833 02 Feb 2024 11:45

Hi,

Thank you for your fast reply.

1. I changed to LED because I had problems with LED status. Now I changed P8 to WifiLED and it works as expected. I did not want the blue light to be turned on. So with this configuration, it's turned off. And only the red LED is active if the AC plug is active (Relay 1).
2. It's okay. I will use HA group turn on/off, which is okay.
3. I did try this before, and now it's working. I don't know why I was having issues prior. At least for reboot. I'll check if it fails after wifi loss and reconnect.
I assume that Channel 0 is for WifiLED? So I configured 1-3 to the last state:
#4 20940853 02 Feb 2024 12:01

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

Helpful post? (0)

Post #4
20940853 02 Feb 2024 12:01

Channel 0 is not for WiFi LED. WiFi LED is channel-independent.

I think that channel 0 is unused in your case, you have relays set for channel 1, 2 and 3.

The channel 0 may be visible on Startup page because you may have accidentally set something for channel 0 like Btn_Tgl_All and maybe GUI is a bit naive and it shows it anyway even tough it's not really used.

I don't think it's a problem, it's just a matter of cosmetics.

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.
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Configuring AliExpress 16A USB Socket with CB2S (BK7321N) and Tuya JSON Code

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