Calex Smart Globe ST64 LED lamp from Hornbach/Amazon NL is a tunable white, dimmable Wi‑Fi E27 bulb using a WBLC5 module and BK7231T chipset.
PIN24 provides PWM Channel 1 for warm white, and PIN26 provides PWM Channel 0 for cold white.
The device identifies with Tuya Product ID keytg5kq8gvkv9dh and firmware V2.9.12; flags 398337 enable MQTT broadcasting, LED state memory, auto-on, and smooth transitions.
tuya-cloudcutter flashed OpenBeken over OTA, and the bulb was configured correctly without a teardown.
AI summary based on the discussion. May contain errors.
Calex Smart Globe ST64 led lamp from Hornbach / Amazon NL
Description: Tunable White / Dimmable Wifi E27 ST64 lightbulb
Module: WBLC5
Chipset: BK7231T
Flags: 398337
- Flag 0 - [MQTT] Broadcast led params together (send dimmer and color when dimmer or color changes, topic name: YourDevName/led_basecolor_rgb/get, YourDevName/led_dimmer/get)
- Flag 10 - [MQTT] Broadcast self state on MQTT connect
- Flag 12 - [LED] Remember LED driver state (RGBCW, enable, brightness, temperature) after reboot
- Flag 17 - [LED] Automatically enable Light when changing brightness, color or temperature on WWW panel
- Flag 18 - [LED] Smooth transitions for LED (EXPERIMENTAL)
Tuya Product ID: (can be used to non-destructively confirm presence of the BK7231T based WBLC5)
keytg5kq8gvkv9dh
Tuya Firmware Version: V2.9.12
Flashing OpenBeken
Used tuya-cloudcutter to flash with the following settings
I did not teardown this device as I was able to OTA flash it and configure it correctly
About Author
ewenbr wrote 3 posts with
rating 2 .
Been with us since 2023 year.
WB3S, are you sure? Can you get Tuya config partition so I can check? Here's a tutorial how to do it:
https://www.youtube.com/watch?v=WunlqIMAdgw
Get Tuya Config file and attach it here. [Read more]
ewenbr
04 Jun 2023 20:03
Good catch. Followed the indicated procedure and it returned - WBLC5 [Read more]
FAQ
TL;DR: 2 PWM channels and the expert note "Good catch" identify the Calex Smart Globe ST64 E27 as a WBLC5, BK7231T tunable-white bulb for OpenBeken users solving OTA flashing and pin setup. [#20605818]
Why it matters: Correctly identifying WBLC5 prevents applying the wrong WB3S assumption before configuring OpenBeken.
Alternative discussed
Result in this thread
Practical impact
WBLC5
Confirmed after Tuya config check
Use the WBLC5/BK7231T OpenBeken setup
WB3S
Questioned, then not confirmed
Do not rely on WB3S without verification
OTA flashing with tuya-cloudcutter
Used successfully
No teardown was needed
Physical teardown
Not performed
Keep as fallback, not first step
Key insight: The safest compatibility check is the Tuya config result, not the first module guess. In this case, the bulb returned WBLC5.
Quick Facts
Device: Calex Smart Globe ST64 LED lamp, Tunable White, Dimmable WiFi, E27, sold via Hornbach or Amazon NL. [#20605687]
Module and chipset: WBLC5 with BK7231T; the WB3S label was questioned and corrected after config verification. [#20605818]
Tuya identifiers: Product ID keytg5kq8gvkv9dh and firmware version V2.9.12. [#20605687]
OpenBeken flags used: 0, 10, 12, 17, and 18, combined as flag value 398337. [#20605687]
How do I flash OpenBeken onto a Calex Smart Globe ST64 E27 tunable white WiFi bulb using tuya-cloudcutter?
Flash OpenBeken OTA with tuya-cloudcutter, then configure the two PWM channels.
Select the tuya-cloudcutter profile shown for this bulb.
Flash OpenBeken over the air.
Set PIN24 and PIN26 as PWM outputs for warm and cold white.
The reported bulb used Tuya firmware V2.9.12 and did not require teardown. [#20605687]
What is the correct OpenBeken pin configuration for the Calex Smart Globe ST64 with a WBLC5 module?
Set PIN24 to PWM Channel 1 for warm white, and PIN26 to PWM Channel 0 for cold white. This is the complete pin mapping reported for the WBLC5-based Calex Smart Globe ST64. The bulb is a tunable white, dimmable WiFi E27 ST64 lamp. [#20605687]
What is the WBLC5 module used in the Calex Smart Globe ST64 bulb?
WBLC5 is the confirmed module inside this Calex Smart Globe ST64 after checking the Tuya configuration. "WBLC5 is a smart-bulb WiFi module that hosts the BK7231T platform, providing the hardware target OpenBeken must match during flashing and configuration." The initial WB3S assumption was corrected. [#20605818]
What is the BK7231T chipset, and why does it matter for OpenBeken flashing?
BK7231T is the chipset identified for this Calex Smart Globe ST64, so the OpenBeken flashing path must target BK7231T. "BK7231T is a WiFi smart-device chipset that OpenBeken supports, and its presence determines the firmware family, module expectations, and safe OTA flashing workflow." The thread links it with the WBLC5 module. [#20605687]
How can I confirm whether my Calex Smart Globe ST64 bulb uses WBLC5 instead of WB3S?
Extract the Tuya config partition and check the returned module value. In this case, the first WB3S assumption was challenged. The verification procedure then returned WBLC5. That correction is the key evidence for this exact bulb variant. [#20605818]
What Tuya Product ID identifies the BK7231T-based Calex Smart Globe ST64 bulb from Hornbach or Amazon NL?
The Tuya Product ID is keytg5kq8gvkv9dh for the reported BK7231T-based Calex Smart Globe ST64. The thread states this ID can non-destructively confirm the WBLC5 presence. The same post lists Tuya firmware version V2.9.12. [#20605687]
How do I extract the Tuya config partition from a BK7231T smart bulb for verification?
Follow the Tuya config extraction tutorial linked in the thread, then attach or inspect the config file. The requested method was used after a WB3S question. It returned WBLC5, resolving the module uncertainty without physical teardown. [#20605736]
What does Tuya firmware version V2.9.12 mean for flashing a Calex Smart Globe ST64 bulb?
Tuya firmware V2.9.12 identifies the original firmware version on the reported bulb. The user successfully flashed OpenBeken with tuya-cloudcutter on that firmware. It is not listed as a universal guarantee for every later or earlier bulb batch. [#20605687]
What do OpenBeken flags 0, 10, 12, 17, and 18 do on a tunable white smart bulb?
The configured OpenBeken flag value is 398337, combining five LED and MQTT behaviors. Flag 0 broadcasts LED parameters together. Flag 10 broadcasts state on MQTT connect. Flag 12 remembers LED state after reboot. Flag 17 enables light after brightness, color, or temperature changes. Flag 18 enables smooth LED transitions. [#20605687]
How are warm white and cold white channels mapped to PWM pins on the Calex Smart Globe ST64?
Warm white maps to PIN24 on PWM Channel 1, while cold white maps to PIN26 on PWM Channel 0. "PWM is a signal-control method that changes effective LED output by rapidly switching a channel, allowing OpenBeken to dim warm and cold white separately."[#20605687]
What is MQTT, and how does OpenBeken use it to publish LED dimmer and color temperature states?
MQTT carries OpenBeken state messages such as dimmer and LED color data. "MQTT is a lightweight messaging protocol that publishes device state to topics, letting OpenBeken report LED brightness and color changes to automation systems." Flag 0 sends led_basecolor_rgb/get and led_dimmer/get; flag 10 publishes state on connect. [#20605687]
What is PWM, and how does it control warm white and cold white LEDs in a smart bulb?
PWM controls the two white LED channels by assigning each channel to a separate output pin. On this bulb, PIN24 drives warm white as Channel 1. PIN26 drives cold white as Channel 0. OpenBeken then changes brightness and temperature through those two PWM outputs. [#20605687]
tuya-cloudcutter vs physical teardown flashing: which approach is better for a Calex Smart Globe ST64 bulb?
tuya-cloudcutter is better first when the bulb matches this reported variant, because OTA flashing worked without teardown. The thread explicitly says the device was not torn down. Physical teardown remains the fallback when OTA flashing or module verification fails. [#20605687]
What should I do if tuya-cloudcutter fails to OTA flash a BK7231T or WBLC5-based smart bulb?
Verify the module by extracting the Tuya config partition before changing hardware assumptions. A failure edge case is using a WB3S assumption on a bulb that actually returns WBLC5. If OTA still fails, the thread gives no destructive flashing steps, so treat teardown as outside the confirmed data. [#20605818]
Where can I buy the Calex Smart Globe ST64 smart bulb, and what should I check before buying it for OpenBeken compatibility?
The reported Calex Smart Globe ST64 came from Hornbach or Amazon NL listings. Before buying for OpenBeken, check for the same tunable white, dimmable WiFi E27 ST64 model. Then confirm Product ID keytg5kq8gvkv9dh, WBLC5, BK7231T, and Tuya firmware V2.9.12 when possible. [#20605687]
AI summary based on the discussion. May contain errors.
Comments
WB3S, are you sure? Can you get Tuya config partition so I can check? Here's a tutorial how to do it: https://www.youtube.com/watch?v=WunlqIMAdgw Get Tuya Config file and attach it here. [Read more]
Good catch. Followed the indicated procedure and it returned - WBLC5 [Read more]