Articles

Basic information: Brand: AVATTO Chip: BK7231N [CB3S] Model: US-TS02 Local Vendor: Connections: TXD1 <---> UART RX RXD1 <---> UART TX 3.3 <---> UART 3.3V GND <---> UART GND GPIO: P7 (PWM1) Btn 1 P9 (PWM3) LED 1 P23 (ADC3) WifiLED 0 P26 (PWM5) Rel 1 { "vendor":... [Read more]

A new version of a similar BSD31 smart socket. It differs in that both USB ports are controlled independently and the BK7231N chip is used, not T. When buying, the firmware version 1.1.8 is installed on the smart socket. I installed the OpenBK7231N firmware using tuya-cloudcutter... [Read more]

Blitzwolf BW-LT29 is a WiFi-controlled LED lamp with an E27 socket, offering control of brightness and white temperature (range 2700-6500K). This lamp deserves special attention because, like other Blitzwolf products, it allows you to easily change its charge to such a cloud-independent... [Read more]

Today we take a look inside another old piece of equipment, this time a Denver CAD-350 car radio. After a brief presentation of the interior, I'll try to run the LCD display from inside, using the PT6523 controller already present there, which I'll control from an Arduino via a simple... [Read more]

I purchased this device with the impression it included a TYWE3S module (ESP8266), but it instead came with a CB3S module (BK7231N). The specifications on the inside of the door even list this device's module as a TYWE3S, so I was surprised to find something else. I had never worked... [Read more]

Today we release from the cloud another product that is easy to buy in our country - a double RTX relay compatible with the Tuya application. As a standard, I will show its interior, describe the process of changing the firmware (where to solder the wires, etc.) and then I will give... [Read more]

Purchased:from this link: Cost: ~$AUD16 (USB TTL converter to show scale) Inputs : 1 x hidden switch marked "reset" Power : External micro USB connector Internal 2 x AAA batteries Template: { "vendor": "Tuya", "bDetailed": "0", "name": "AliExpres generic PIR", "model": "HW4008-W",... [Read more]

The UPS was sent to the workshop for scrapping. It's a pity for a big case, use the opposite way and it will be a powerful charger. When once the "joy in the morning" met me for the first time, I thought: let it run for 15 minutes with 20-30A and the car would definitely start... [Read more]

Hello everyone, First of all thanks to the community. I flashed a relay module (dry contact) that uses a CB3S chip Brand : Mhcozy Model : TYWRA-RF I just wanted to share with you the config, in order to save time Here is the config: { "vendor": "Tuya", "bDetailed": "0", "name": "MHCOZY... [Read more]

Why does SMT Technology Benefit PCB Assembly? JLCPCB SMT technology allows fabrication yield. Compared with THT or hand soldering, SMT is more suitable for automated production. THT requires different insertion machines (DIP insertion machine, radial insertion machine, axial insertion... [Read more]

Calex Smart Globe ST64 led lamp from Hornbach / Amazon NL Description: Tunable White / Dimmable Wifi E27 ST64 lightbulb Module: WBLC5 Chipset: BK7231T Config: PIN24: PWM, Channel 1 (Warm white) PIN26: PWM, Channel 0 (Cold white) Flags: 398337 - Flag 0 - [MQTT] Broadcast led params... [Read more]

Calex Smart Globe G125 led lamp from Hornbach / Amazon NL Description: Tunable White / Dimmable Wifi E27 G125 lightbulb Module: CBLC5 Chipset: BK7231N Config: PIN24: PWM, Channel 1 (Warm white) PIN26: PWM, Channel 0 (Cold white) Flags: 398337 - Flag 0 - [MQTT] Broadcast led params... [Read more]

Tuya night light with WIFI Source: The night light is made by Tuya-module CBU. All needed pin are accessable. You can flash it without dismount the module Pin definition for the module as cbu.txt These pins are used: P26 - PWM1 - red P24 - PWM2 - green P6 - PWM3 - blue P8 - PWM4 -... [Read more]

In the material you will see the inside of the UNIQUE tag copier, which made it easier to use the space after the company moved. Part of the building is separated by doors equipped with electric strikes and keyfob/card readers. The problem is that only three of the transferred tags... [Read more]

Purpose and principle of operation There are libraries for Arduino used to control devices via IR. However, I decided to solve it in a different way - I wanted to create a learning system, i.e. remembering the codes from the original remote control. This allows you to control a whole... [Read more]

I invite you to a brief description of the interior and firmware changes of the RTX WCM1MR roller shutter controller, bought from a Polish mail order shop for about 70 PLN. Here I will discuss how to conveniently access the RX/TX pads of the CBLC9 WiFi module from the inside and show... [Read more]

Since the early days of the development of electricity and electronics, there has been a need to build regulators to smoothly influence the power dissipated in a load. The first regulators, built as linear regulators, introduced huge losses on the regulating element and, while they... [Read more]

Hi there, I present you teardown and profile for this switch module Brand: Avatto Name: 2 Gang Wi-Fi Switch module Model: WSM16-2 Chip: BK7231N Board: CBU This is the listing where I bought it: AliExpress - AVATTO Online Store AliExpress - AVATTO Official Store Yes, I bought 2 devices,... [Read more]

Latest OpenBeken devices can be automatically configured with just a few clicks - figuring out device template manually is no longer needed. OpenBeken is now able to extract Tuya JSON configuration and import it for most of the devices available in the market. In the past, in order... [Read more]

Recently, I was running a simple system for reporting energy measurements via a WiFi network from a "smart" electrical outlet and I needed a convenient way to test the reception of HTTP GET and POST requests. I will show here how you can use Node.js for this purpose. Node.js allows... [Read more]

Recently, I presented the interior of a cheap smartband with a BT interface, a color display and several functions typical for this segment Now I will describe how to start programming this system. The band is controlled by SoC DA14585 from Dialog (Renesas) with an ARM Cortex-M0 core.... [Read more]

. Hello, today a short presentation of another Tuya gadget, this time combined with a warning, because this gadget is built on a WiFi chip for which there is no open software available at this moment. Inside the SHSB111W10 we find the WBR2, or W701H chip, a KM4-core microcontroller... [Read more]

Tuya-cloudcutter provides a method to change the firmware of BK7231 device via WiFi, without the need to open device case and solder wires. This is a great opportunity for beginners and people who are unable to solder, to get their Tuya devices running 100% local and cloudfree. Tuya-cloudcutter... [Read more]

Another unbranded Tuya LSPA9. This is an Australian model. I had 2 with 1.1.8 firmware but the download seemed slightly different? Note: the earth pin is unsoldered. One was making contact, one wasn't! These are slightly wider than the Arlec/Connect models and don't work in double... [Read more]

Tuya Smart WiFi Power Strip RH-M601 w/power monitoring Here is my Teardown for this power strip. Not many smart power strips with 6AC channels and this one even has spacing for wall-wart power supplies. Plus it has power monitoring! A bargain at $40 and compatible with OpenBeken.... [Read more]

Today we are programming a device that is confusingly similar to the previously discussed MOD003 double relay and differs only in the software and markings on the housing. Even inside the PCBs are identical. The aforementioned MOD003 had two relays and supported the connection of... [Read more]

This was my first BK7231T Device, bought some time back. Full description of the product is here in this post: Link I will pull them in to this post in next comment for easy reference My first attempt to use cloudcutter is here: Link Since I was new to cloudcutter, I was naive to... [Read more]

Name : Tuya smoke detector Producer : MBG Line Model : VS-P443W Sensor purchased on Allegro for PLN 118. It has a smoke ppm indicator, battery level indicator and an alarm trigger if the smoke level is exceeded. Works with the Tuya app. teardown: Disassembly of the sensor is very... [Read more]

Incredible savings, intuitive operation or changing regulations - these and dozens of other reasons are convincing more and more people to invest in building automation. Whether you're an electrician, an installer or simply interested in creating innovative solutions to everyday problems,... [Read more]

Producer : Intertek (Smartwares) Model : Flamingo SF-501SHC Socket operating in two modes - Wifi and 433MHz (control via the application and remote control), which can act as a control panel for 4 additional 433MHz sockets (model SF-501PFR) to be able to control them also from Wifi.... [Read more]