Multi-platform IoT firmware supporting up to 32 platforms - OBK 2025 summary

p.kaczmarek2 3804 94

TL;DR

OpenBeken/OBK is an open-source Wi‑Fi firmware for building-automation devices like relays, LED controllers, thermostats, energy meters, and sensors.
It flashes over UART, then uses auto-detected GPIO templates, Berry scripting, Home Assistant integration, REST hosting, and a simulator to speed setup and testing.
The project now supports 32 platforms and lists 817 devices, with separate binaries for families such as BK7231, ESP32 variants, Realtek, Winner Micro, and more.
Online builds, automatic OTA downloads from GitHub, and GitHub-run tests let developers compile, deploy, and flag bad commits without local toolchains.
Some platform features still vary: certain OTA paths are broken, WPA3 must be manually enabled on some ESP8266 builds, and several PWM or sleep features are partial.

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#91 21914518 02 Jun 2026 21:11

divadiow divadiow

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Post #91
21914518 02 Jun 2026 21:11

p.kaczmarek2 wrote:
OK CDC variant merged

cool

p.kaczmarek2 wrote:
we shouldn't overwrite anything

not sure what you mean though, the only thing being overwritten is LFS now with every OTA with how it's currently configured.

I was just trying to get the button working on the GD32 (active high) with role Btn_pd_n but it didn't seem to be effective at all. dInput_pd_n was registering button changes though. Seems Btn_pd/n is missing here? https://github.com/openshwprojects/OpenBK7231T_App/pull/2118/changes

Added after 5 [minutes]:

p.kaczmarek2 wrote:
so will you post it? I can help if needed.

feel free to add/amend anything
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#92 21914635 02 Jun 2026 23:57

p.kaczmarek2 p.kaczmarek2

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Post #92
21914635 02 Jun 2026 23:57

divadiow wrote:

not sure what you mean though, the only thing being overwritten is LFS now with every OTA with how it's currently configured.

ARe you sure new LFS position is 100% safe? No Tuya data there?

divadiow wrote:

feel free to add/amend anything

Great post!

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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#93 21914692 03 Jun 2026 07:58

divadiow divadiow

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Post #93
21914692 03 Jun 2026 07:58

p.kaczmarek2 wrote:
ARe you sure new LFS position is 100% safe? No Tuya data there?

LFS start was moved to end of OBK OTA slot instead of it being at the start. I'll confirm.

divadiow wrote:
I was just trying to get the button working on the GD32 (active high) with role Btn_pd_n but it didn't seem to be effective at all. dInput_pd_n was registering button changes though. Seems Btn_pd/n is missing here? https://github.com/openshwprojects/OpenBK7231T_App/pull/2118/changes

now added more relating to Btn_pd/n

IOR_Button_pd / IOR_Button_pd_n in PIN_IOR_NofChan()
IOR_Button_pd / IOR_Button_pd_n in Button_OnDoubleClick()
IOR_IRRecv_nPup in the zero-channel role list

https://github.com/openshwprojects/OpenBK7231...nges/4945c02a18cb1868dd4fa3cdb391a686465322de
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#94 21915788 05 Jun 2026 08:06

divadiow divadiow

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Post #94
21915788 05 Jun 2026 08:06

Include IOR_Button_pd / IOR_Button_pd_n in Device Groups power sharing
Include DoorSensorWithDeepSleep_pd in fast-connect detection
Align TinyIR NEC IRRecv/IRRecv_nPup pull-up behaviour
#95 21918229 09 Jun 2026 18:09

divadiow divadiow

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Post #95
21918229 09 Jun 2026 18:09

divadiow wrote:
I was just trying to get the button working on the GD32 (active high) with role Btn_pd_n but it didn't seem to be effective at all. dInput_pd_n was registering button changes though. Seems Btn_pd/n is missing here? https://github.com/openshwprojects/OpenBK7231T_App/pull/2118/changes

works now on GD32 board since merge
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Multi-platform IoT firmware supporting up to 32 platforms - OBK 2025 summary

FAQ

TL;DR: OBK supports 32 platforms and lists 817 devices; “firmware is fully open source.” Flash via UART, test in a PC simulator, and integrate with Home Assistant. [Elektroda, p.kaczmarek2, post #21794531]

Quick Facts

Multi‑platform: 32 separate binaries across Beken, Espressif, Realtek, Bouffalo, Winner Micro, and more. [Elektroda, p.kaczmarek2, post #21794531]
Device catalog: 817 entries as of 2025‑12‑31, grouped by platform and article/template type. [Elektroda, p.kaczmarek2, post #21794531]
Flashing: UART upload using BK7231 GUI Flash Tool; auto GPIO detection simplifies setup. [Elektroda, p.kaczmarek2, post #21794531]
WPA3/OTA notes: support varies by chip and build; heed flags and bootloader layout. [Elektroda, p.kaczmarek2, post #21794531]
Dev workflow: fully online CI builds and optional automatic OTA to target devices. [Elektroda, p.kaczmarek2, post #21794531]

What is OpenBeken (OBK) and who should use it?

OBK is an open‑source firmware for Wi‑Fi IoT devices like relays, LEDs, thermostats, and meters. It targets users who want local control, added sensors, scripting, HA integration, and freedom from vendor clouds. The author states it is “fully open source, free.” [Elektroda, p.kaczmarek2, post #21794531]

Which chips and platforms are supported right now?

As of December 31, 2025, OBK ships binaries for about 32 platforms, including Beken BK7231/T/N/38/52, Espressif ESP8266/ESP32 families, Realtek Ameba series, Bouffalo BL602, Winner Micro W600/W800, XRadio XR806/XR809, Lightning Semi LN882H, ESWIN ECR6600, and others. Check the platforms matrix and linked docs. [Elektroda, p.kaczmarek2, post #21794531]

How do I flash OBK via UART?

You upload the firmware over UART using a USB‑to‑UART adapter and the BK7231 GUI Flash Tool. After flashing, join Wi‑Fi and configure GPIOs. The flasher can auto‑detect GPIO on many devices, reducing guesswork versus Tasmota. 1. Connect UART pins and power. 2. Use the GUI tool to write the binary. 3. Join Wi‑Fi and set roles. [Elektroda, p.kaczmarek2, post #21794531]

Can I run devices 100% locally without any cloud?

Yes. A core goal is freedom from vendor clouds and surveillance. After flashing, devices work fully offline, with local control, REST, MQTT, and HA connectivity. This avoids outages, surprise subscriptions, and vendor lock‑in. The author lists cloud independence as a key motivation. [Elektroda, p.kaczmarek2, post #21794531]

Does OBK integrate with Home Assistant and MQTT?

Yes. OBK connects to Home Assistant without limits and supports MQTT. The simulator even pairs with Home Assistant, letting you validate virtual devices before flashing hardware. This streamlines testing scenes, sensors, and lighting. [Elektroda, p.kaczmarek2, post #21794531]

How do online builds and automatic OTA updates work?

You can compile firmware entirely online via GitHub CI, so no local toolchain is needed. An OBK OTA tool can fetch artifacts on each build and update target devices automatically, including from pull requests and commits. “Build online, deploy OTA” describes the workflow. [Elektroda, p.kaczmarek2, post #21794531]

Is there a PC simulator for designing and testing devices?

Yes. The OBK Simulator for Windows/Linux implements a HAL with a visual schematic editor. You can test advanced circuits, Berry scripts, and HA pairing on your computer. Automatic tests also run on GitHub; failing commits get flagged. [Elektroda, p.kaczmarek2, post #21794531]

How many ready device templates or articles exist?

The community device list shows 817 entries dated 2025‑12‑31. You can filter by platform and by template versus full article. This accelerates onboarding and reduces wiring mistakes. [Elektroda, p.kaczmarek2, post #21794531]

What scripting language and automations does OBK support?

OBK supports Berry scripts across target hardware and in the Simulator. You can add logic, timers, and behaviors without recompiling. The driver list includes complex automations like PixelAnim, DMX, shutters, IR, and data logging helpers. [Elektroda, p.kaczmarek2, post #21794531]

Can OBK host custom web pages and a REST API on the device?

Yes. OBK integrates LFS file storage and a REST interface. You can build HTML/JS control panels, with optional GZIP compression to fit more content. This enables fast local dashboards without external servers. [Elektroda, p.kaczmarek2, post #21794531]

Any known OTA or platform edge cases I should watch out for?

Yes. Examples: XR809 OTA attempts crash the device; ESP8266 uses software PWM and may flicker; some bootloaders block OTA on certain Tuya BK7252 units; web‑based OTA can be corrupted on some chips, so use HTTP OTA instead. Review notes before updating. [Elektroda, p.kaczmarek2, post #21794531]

Does OBK support WPA3 and low‑power modes?

WPA3 support exists on many platforms, sometimes requiring specific ALT builds or sdkconfig flags. Deep sleep varies by MCU; some support only timed sleep and lack GPIO wake. Always check the platform table footnotes when planning battery builds. [Elektroda, p.kaczmarek2, post #21794531]

What drivers and sensors are already supported?

The list includes TuyaMCU (regular and battery), DMX, WS2812 animations, IR/RF, energy chips (RN8209, BL0942, HLW8112), environmental sensors (SHT3X, BMP280, DS18B20), LED drivers (SM2135, BP5758D), displays (MAX72XX, TM1637), shutters, and many more. “Drivers keep expanding.” [Elektroda, p.kaczmarek2, post #21794531]

What do terms like TuyaMCU, OTA, and Berry mean in OBK context?

In OBK, TuyaMCU denotes the driver family for Tuya‑based devices, including battery variants. OTA refers to updating firmware from built artifacts without disassembly. Berry is the embedded scripting language used by OBK and its Simulator. [Elektroda, p.kaczmarek2, post #21794531]

How do I contribute, request drivers, or support OBK?

Share device findings, propose drivers, or test platforms using the GitHub and forum links. You can also support development via the provided PayPal link. The author invites sensor and platform suggestions and thanks major contributors. [Elektroda, p.kaczmarek2, post #21794531]

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