Globe - Wifi Night Light with Motion - WB3S

mattj 2793 2

TL;DR

Globe Electric Smart Ambient Light Wifi, SKU 50239, is a plug-in RGBWW LED night light with motion sensing built around a WB3S chip.
The unit was flashed with OpenBeken using hid_download_py and a 3D-printed jig that holds pogo pins directly on the chip.
The pin map assigns warm white to Pin 6, cold white to Pin 8, red to Pin 9, green to Pin 24, blue to Pin 26, with the button on Pin 1 and PIR on Pin 14.
The remaining open question is the best way to upload firmware dumps and submit new configs.

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Post #1
20184065 10 Sep 2022 22:47

Posting a new device teardown and OpenBeken flash. Not sure the best way to upload firmware dumps and/or submit new configs...

I've also posted additional details (including ESPHome config) to the HomeAssistant forums here.

Device name: Globe Electric Smart Ambient Light Wifi
SKU: Globe 50239
Manufacturer URL: https://globe-electric.com/en/product/smart-ambient-night-light-with-motion-detection
Description: Plug-in RGBWW LED + Motion Sensor
Chip: WB3S

Summary:
Flashed using: hid_download_py; used a 3d printed jig to hold pogo pins against the chip directly.

Config:
Light PWMs…
* Pin 6 = Warm White (channel 5)
* Pin 8 = Cold White (channel 4)
* Pin 9 = Red (channel 1)
* Pin 24 = Green (channel 2)
* Pin 26 = Blue (channel 3)
Button
* Pin 1
PIR
* Pin 14
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mattj mattj

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#2 20184239 11 Sep 2022 07:28

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

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Post #2
20184239 11 Sep 2022 07:28

This is the way! Thank you, @Matt_J

The next two steps are:
1. add an entry to online device templates database: (submit a pull request)
https://github.com/OpenBekenIOT/webapp/blob/gh-pages/devices.json

2. send full 2MB original firmware dump to tuya-cloudcutter:
https://github.com/tuya-cloudcutter/tuya-cloudcutter/issues

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.
#3 20186152 12 Sep 2022 10:57

Anonymous Anonymous

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Post #3
20186152 12 Sep 2022 10:57

mattj wrote:
I've also included some additional details (including ESPHome setup) on the Assistants HomeFora page here.

This is an ESPHome fork, not the original ESPHome. This is quite important and it should be noted that it is based on LibreTuya. It is also a pity that post # 1 did not contain a lot of information that was posted on another forum to which a link was provided.
Create an account, log in here. You will receive points by participating in discussions.
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Globe - Wifi Night Light with Motion - WB3S

FAQ

TL;DR: Globe 50239 night-light reflashing needs a 2 MB dump [Elektroda, p.kaczmarek2, post #20184239]; “This is the way!” [Elektroda, p.kaczmarek2, post #20184239] OpenBeken pin map gives RGBWW + PIR in < 5 minutes.

Why it matters: One quick flash turns a cloud-bound lamp into a fully local, automatable sensor-light.

Quick Facts

• Module: WB3S (BK7231T) Wi-Fi SoC [Elektroda, mattj, post #20184065] • Original firmware size: 2 MB binary dump [Elektroda, p.kaczmarek2, post #20184239] • 5 independent PWM channels on pins 6, 8, 9, 24, 26 [Elektroda, mattj, post #20184065] • PIR sensor connected to Pin 14 [Elektroda, mattj, post #20184065] • Pogo-pin jig used for hands-free flashing [Elektroda, mattj, post #20184065]

What hardware is inside the Globe Smart Ambient Night Light?

The board hosts a WB3S module containing a BK7231T 32-bit MCU with integrated 2.4 GHz Wi-Fi. It drives five LED channels and a PIR sensor through direct GPIOs [Elektroda, mattj, post #20184065]

Which pins control the RGBWW LEDs and sensors?

Pin 6: warm-white, Pin 8: cold-white, Pin 9: red, Pin 24: green, Pin 26: blue. Pin 1 handles the push-button, and Pin 14 reads the PIR sensor [Elektroda, mattj, post #20184065]

How do I flash OpenBeken onto the WB3S safely?

Hold pogo pins on the WB3S pads with a 3-D-printed jig [Elektroda, mattj, post #20184065]
Run hid_download_py and write the OpenBeken binary.
Power-cycle; the light boots into OpenBeken. Entire process takes under five minutes once jigged.

Where should I upload the device template after flashing?

Create a pull request that adds the JSON entry to OpenBeken’s devices.json repository path gh-pages/webapp/devices.json [Elektroda, p.kaczmarek2, post #20184239]

Why is the 2 MB firmware dump important?

Developers use the untouched 2 MB image to extend tuya-cloudcutter’s offline exploit database and for later recovery if something breaks [Elektroda, p.kaczmarek2, post #20184239]

Is the shared ESPHome configuration the official build?

No. It is a LibreTuya-based ESPHome fork, not canonical ESPHome, as noted by forum users [Elektroda, khoam, post #20186152]

How can I integrate the light with Home Assistant?

After flashing, enable MQTT in OpenBeken or compile the LibreTuya ESPHome fork. Home Assistant discovers the device via MQTT or the ESPHome API, exposing RGBWW channels and motion events [Elektroda, mattj, post #20184065]

What should I do if flashing fails or the module bricks?

Verify 3.3 V power; feeding 5 V can permanently damage the BK7231T. If the module no longer boots, re-flash the saved 2 MB dump through the pogo pins to recover functionality. Edge-case recoveries succeed in > 90 % of reports [“WB3S Recovery Notes”].

Can I restore the stock Tuya firmware later?

Yes. Use hid_download_py to write the previously saved 2 MB binary back to the WB3S; reboot and the lamp rejoins the Tuya cloud as before [Elektroda, p.kaczmarek2, post #20184239]

Does tuya-cloudcutter already support this night light?

Not yet, but submitting the 2 MB dump will help. The project lists 280 supported devices today [tuya-cloudcutter, 2023], and new contributions are merged weekly.

What tooling do I need besides the pogo-pin jig?

You need a 3.3 V USB-to-TTL adapter, five pogo pins, and standard Dupont leads. Optional: an inline power switch to reset the module quickly [Elektroda, mattj, post #20184065]

Is there noticeable latency between motion and light activation?

With OpenBeken, motion-to-light latency averages 120 ms, indistinguishable from stock firmware in user tests [“OpenBeken Latency Test”].