Articles

Today I will present the inside of another LED strip controller, this time in the CCT version (but is it really?), i.e. allowing control of the white temperature. Of course, you can also change its brightness. I will check what WiFi module is inside, describe the firmware change of... [Read more]

Today we will work out a completely unknown I2C protocol of the RGBCW LED controller by capturing and analyzing its packets. We will use the Sigrok logic analyzer for this, of course providing the entire system with appropriate galvanic separation because the analyzed device works... [Read more]

Device: Energizer Smart RGB-Watt LED Light Bulb Model: EAC2-1002-RGB (EAC2-1002-ME2) FCC ID: 2AWECBR30CCT2 Chip-Family: BK7231N Tuya Firmware Version: 1.3.21 I managed to snag a few Energizer 60W replacements (E26 base) RGB bulbs on sale at Menards (north-midwest American gargantuan... [Read more]

After profiting so much from the help I got here, I'm a bit proud but mainly happy to finally be able to add to the database! I managed to successfully flash a Tuya generic power strip with tuya cloudcutter. It looks quite nice, has 4 outlets that can be switched individually (their... [Read more]

Just flashed a new device: vendor: tongou model: TO-Q-SY1-JWT This is a Switch and Meter for DIN Rail. You can buy it on Aliexpress: Picture of the inside: ] All Pins of the BK7231N are reachable. Just flashed it via serial and made the attached config. All LEDs, Relay, and Meter... [Read more]

I will show here how you can easily install Tasmota on a device with ESP8266/ESP8285 or ESP32 via a web installer available on Chrome, Opera and Edge browsers. The described method is much more convenient than the "manual" installation via esptool.py, but it still requires connecting... [Read more]

Hi, I would like to present you my latest work: DIY 3D printer, in what I think is a bit of a peculiar kinematics. I was inspired by the design of the Voron 0 printer, which I find elegant and simply pretty. I like the good use of the working volume and the practically lack of empty... [Read more]

Hello, By way of introduction: The amplifier is visually very similar to the Gamut design. It's a coincidence. Wanting to build an amplifier, I was looking for a damaged enclosure donor. The housing of the Koda AV-600X receiver caught my eye, but the knob was asymmetrically placed.... [Read more]

Device Name : 3Paws Smart Wi-Fi Pet Feeder 1080p Device Type : Auto Pet Feeder with Camera Device Chip : Has several chips onboard - ? TuyaMCU STM8L052C6T6 - Camera GK7102C - ? WIFI module BL-M8188FU3 The device I purchased was from Australia Post Shop. This Item is no longer available... [Read more]

I want to thank all the hard working developers and those that write documentation on code. I could not have figured this out without your extensive effort! This Treatlife SS01S switch has been available for a while but this version bought July 2023 has the CB3S module with BK7231N... [Read more]

This is the first, and likely only device that I have ever added openbk to, but it has not yet been listed so I figure I'll throw the information that I have about it here. I purchased this from an Ace Hardware a few years back, and finally decided to cut it from the cloud. It has... [Read more]

Today, a short topic - the interior of a very cheap LED strip controller, available for purchase on a Polish auction website, offering WiFi control, remote control and playing to the rhythm of music. This time there will be a not-so-known WiFi microcontroller inside, the TR6260S1,... [Read more]

Hi! In case anyone is interested, here is a simple project to initialize a simple BLE device on WB2L. No Tuya libraries. This is not a fully functional device (in the sense that it does not do anything useful but sends some data to the host). There is a (long) write-up in the doc... [Read more]

Today I will present another Moes Smart Switch single relay module, this time distinguished by the fact that it additionally offers energy measurement. I will analyze its interior (main PCB and modules: WiFi and energy measurement) and show how to change its firmware so that it can... [Read more]

I will present here the teardown, the principle of operation and the firmware change (in order to free it from the cloud and gain independence from the manufacturer's servers) of a cheap PIR sensor by Tuya, bought on one of the Polish shipping portals. Finally, I will provide its... [Read more]

Here is a short teardown and flashing instruction (and how-to-free-from-cloud guide) for another popular Tuya wall switch, the WiFi DS-101JL, although you can also do the same with its 2gang and 3gang version. This switch is based on BK7231N, so you can upload OpenBeken . There is... [Read more]

Here I will show the inside of the 'intelligent' Tuya radar/motion/light sensor based on TuyaMCU, I will analyze its communication protocol, and then I will show how it can be handled in OpenBeken. For the convenience of use, I will also create a mini website for this device... [Read more]

Hello, Necessity is the mother of invention, sometimes the right equipment is needed for servicing, such as a low-frequency signal generator used to repair amplifiers and receivers. There are a lot of devices on the market, both new and used, but their price is unacceptable to me.... [Read more]

It may seem ridiculous, but you can build an interesting power amplifier from ordinary operational amplifiers (with the right amount of them). :) From this "miracle" I achieve 2×14 W on a load of 8 ohms. Maybe this value is not shocking, but considering what we get it from, it's... [Read more]

I will present here a short analysis of the interior and the firmware change of the WiFi SE831L/GD-DC5 garage door controller advertised as Sonoff eWelink. As a standard, I will free it from the cloud, give the procedure for changing its firmware and configurations of its GPIO. This... [Read more]

I will show here the interior and the procedure of freeing the OXT SWT10 volt-free relay from the cloud. A volt-free relay is one that does not have a permanent power supply to the output of the relay. The relay output is completely isolated here, so we can successfully control a... [Read more]

I will present here an analysis of the interior and a short reverse engineering of the UART protocol of another Tuya dimmer, this time based on a rather unusual LMB54 (BK7231N) module and two HC32F003 microcontrollers. I will fully describe here how it can be programmed and added... [Read more]

Another RGBCW bulb from Feit Electric... this one has a different configuration than those which have already been discussed here. Amazon Listing: Specs: * 100W Equivalent * 18W actual * 1600 lumen * 90+ CRI Teardown (Partial): Config: * Equipped with a CB2L (BK7231N) * 5 PWM control... [Read more]

Here's a short presentation showing how to use Tasmota Control app from Google Play to control Tasmota and OpenBeken devices. Tasmota Control allows you to control TAS/OBK devices on your local area network without any external server. No Home Assistant is needed. Tasmota Control... [Read more]

Remove diffusing filter. Undo 3 screws. Unplug ribbon cable from LED board. Gently pry off back cover with small flat tool. Plastic is very soft/brittle. CB2L module is soldered to power board. [Read more]

I recently purchased a couple of Treatlife DS03 Smart Dimmer / Fan controller. Naturally, I had no desires to use the Tuya cloud services and wanted to connect it directly to my Home Assistant setup. There were many guides that one could find, but none of them was complete (using... [Read more]

Today we are looking inside a simple "smart" lighting sensor, which surprisingly was implemented by the manufacturer based on TuyaMCU, i.e. based on an additional microcontroller communicating with the WiFi module via UART. Here we will analyze their communication protocol and try... [Read more]

I will present here an interesting LED display controller module that supports 16 segments and 8 characters via the I2C interface. Here I will discuss its communication protocol, demonstrate its implementation and also show how to run it with Arduino. The display discussed here will... [Read more]

Hi, I'd like to share the results of this device from AliExpress . I took elements from similar topics, as it has the same housing as this one , and a chip very similar to this one . For dissassembing, the 6 pads on the back can be easily removed, giving access to 6 triangle screws:... [Read more]

Hello! This is my first time posting something like this so apologies in advance if I have incorrectly formatted something. I noticed that the Smart Life app can be used alongside the Blisslights app to control the projector and sure enough, it uses a Tuya chip. BK7231N - CBU The... [Read more]