Articles

This is a short teardown of Generic Tuya Wall Switch Push Button Type (No Neutral) with CB3S module. Basic information: Brand: Tuya Model: LSPS5 Chip: BK7231N [CB3S] Local Vendor: There are other stores selling similar switches, the original store i bought from had increased their... [Read more]

The video presents a summary of the firmware change in the Tuya switch for WiFi 2.4GHz based on BK7231T (here WB3S). This particular switch, in order to change the firmware, required desoldering the touch button controller chip in the SOIC housing, because it occupied the UART line... [Read more]

Disassembly and box pictures: I bought it on AliExpress Datasheet Flashing: I flashed with the hid_download_py tool (uartprogram, same as described HERE ), using the UART testpoints located on the board. PIN 18 (CEN) needed to be shorted to GND to reset. I was then able to use the... [Read more]

Here I will present a short flashing guide for ESP8266 light switches series, which can be bought easily in our country. I have discussed changing the firmware of such gadgets many times, so I will just show here how they are built and where the UART, IO0 signals are brought out and... [Read more]

Reading the material the inside of an old 2GB HDD I remembered the material from the SGdata YT channel comparing the CMR and SMR recording methods used in HDD drives. Video from the SGdata channel below. CMR (Conventional Magnetic Recording) - data is recorded on magnetic tracks next... [Read more]

Brand: Immax Model: MK-C37-5LU-20SMD-DLV01 Chip: BK7231N [CBLC5] Local Vendor: I've got 3 of these bulbs and wanted to throw Tuya where it belongs. So I bought one more for disassembly, because I didn't know if I'll be able to reassemble it again. I dumped the FW, sent profile request... [Read more]

LSC Smart Led Light Strip RGBCW bought at Action store in NL at arround €20,- Brand: LSC Chip: BK7231T Module: Chip on pcb Article number: 3000342 TODO: ir-remote and 3 buttons on module Settings with RGB CW without buttons and remote: [Read more]

WIFI Smart Socket Model: LSPA8 Max.load 16A Contains a WB2S module and a BL0937 to measure power consumption. Available on AliExpress (e.g. Programming the WB2S with bk_writer1.60.exe is easily possible with UART. Just connect 3.3V to VBAT, GND, 1RX and 1TX to a USB to UART programmer.... [Read more]

Cheap Aliexpress bulbs with apparently a unique board. RX and TX is exposed on the backside and I successfully flashed with this tool, No need to desolder anything. I used this command: (first I took a backup) python uartprogram OpenBK7231N_app_QIO_1.0.0.bin --unprotect -d com10 -w... [Read more]

. Today I'm going to show here another colour LED strip that works with the Tuya app. This LED strip stands out because it has up to three buttons on the controller housing. This allows us to change its colours, brightness and animation without reaching for the phone. This is a big... [Read more]

Successor of Has a BK7231N (CB3S) chip that can be flashed. I bought it from Amazon for 10€ (https://www.amazon.de/dp/B07VYWN88F?tag=tasmotatempla-21) Teardown 1. Remove the rubber feet on the bottom 2. Open the screws and open the case Flashing 1. Connect the following PINs... [Read more]

I did not find a voltage regulator on Mosfet N. Maybe the factory ones are in this technology, but they are usually sealed and you can't look. One thing is certain, these are one of the most emergency components in aggregates. The one I cobbled together should be more resilient.... [Read more]

BK7231 is usually programmed via UART - this is allowed by the bootloader uploaded by the manufacturer. In exceptional situations, however, we can accidentally overwrite this bootloader - then we have to use the SPI programming mode to recover the blocked system. Here I will describe... [Read more]

This is a short teardown of the Moes Smart LED Light Bulb RGBCCT 5W GU10 based on - BK7231T [WBCL5] Basic information: Brand: Moes Model: WB-YL5-RWW-GU10 Chip: BK7231T [WBCL5] Local Vendor: I've got them since early this year, however I couldn't figure out how to remove the pcb without... [Read more]

This is a short teardown of the LVJING WIFI LED Plant Grow Light which is based on BL602 Brand: LVJING Model: LVJING WIFI LED Plant Grow Light Chip: BL602 Vendor: Application: Magic Home BL602: GPIO3 - Button "reverse" GPIO4 - Button "down" GPIO7 - RX GPIO12 - to D_IN UCS1912S led... [Read more]

At the beginning, an explanation to the title - it is not a typical thermometer, because it does not measure anything, but simply displays the temperature taken by other sensors. However, I found the "temperature display" to sound strange. But "to the bedroom" has its justification,... [Read more]

This is a short unboxing of the CoRui TUYA WiFi Smart LED Light Bulb 9W E27 RGBCW based on - BK7231N. I haven't done a full teardown yet to verify which module this has since cloudcutter firmware flashing just works. Basic information: Brand: CoRui Chip: BK7231N Local Vendor: Teardown... [Read more]

mini smart switch - Native module firmware for working without a cloud, via mqtt service. In the application from Tuya, it looks like this: The case is assembled on 4 latches, it is opened with a mediator or a plastic card or nails :-) we start from the slot from the corner with contacts.... [Read more]

Because of the, from Sonoff advertised, API, I ordered from Appla.cy the B05-BL-A60 bulbs. Each one has a price of around 11€. Take care, I am talking here about the B05-BL-A60 NOT the B05-B-A60 which has a different chip, different led driver and no API! Surprised of the energy... [Read more]

The increasing popularity of VFD displays, their relatively low price and interesting appearance prompted me to build a clock based on such a display. The heart of the clock is one of the oldest specialized Soviet microcircuits for electronic clocks, made in the p-MOS technology КР145ИК1911... [Read more]

Welcome to those interested in the topic of building a simple analyzer - meter of 230V network parameters - one phase. The meter is based on ESP32 module according to the schematic diagram, which is attached, and the whole circuit is not complicated. To build the meter you will need... [Read more]

. Today a glimpse inside another IoT gadget, this time from a Polish auction site. We'll check if it's worth buying and whether there's an ESP8266 or some other WiFi module inside. The Nous L6 relay, called a 'controller' by the seller for some reason. Standard, a gadget that cuts... [Read more]

. There are thousands of DIY lawnmower projects on the web, this one probably doesn't stand out from the rest, but as it's been a long time since I've seen a similar project in this section I decided to share my experiences. This is the first prototype verifying in real life the basic... [Read more]

Hello. It will show the EDM-01AA-EU smart dimmer based on the WB3S and TuyaMCU WiFi module. I will demonstrate the process of changing its firmware (this requires cutting the PCB tracks) and give a ready TuyaMCU configuration for OpenBeken . This will allow us to free it from the... [Read more]

This is a short teardown of Generic Tuya Downlight Recessed 6" RGBCW which is based on BK7231N Basic Informations: Brand: Tuya Model: Unknown Chip: BK7231N (I'm not quite sure what the module is but it's listed as FL_M93_V1) Vendor link : Teardown Photos & Packaging: Came in white... [Read more]

This is a short teardown of the BNETA IoT Smart WIFI LED Bulb E27 based on - BK7231N with Tuya module CB2L and LED Driver BP5758D Basic information: Brand: BNETA Chip: BK7231N/CB2L/BP5758D Local Vendor: Teardown Photos and Extracted bin file. Package: Bulb: PCB: Tuya Datasheet and... [Read more]

Welcome, today a brief description of the interior and batch changes of the WiFi-controlled Sonoff S26 socket/plug, available for purchase according to the socket standard popular in Poland. I will show how to upload Tasmota to it (which pin is IO0?) and give its configuration template.... [Read more]

This is a short teardown of the Smartrul E27 WIFi bulb which is based on BK7231N and it uses a tuya module CBLC9 Basic Info: Brand: Smartrul Model: SMR-DP005-WIF-A19 Chip: BK7231N - CBLC9 Vendor : Teardown Photos & Packaging Flashing OpenBeken firmware: Using cloudcutter Select 'E27-RGBCW-Smart-Life-WB2L_M1'... [Read more]

I will present here the interior of a very cheap "outdoor" Tuya socket, which also offers energy measurement. Here I will provide information on how to change its firmware and show the ready configuration OpenBeken for this slot. I will show how to run the statistics system for this... [Read more]

A simple but effective 2.4 GHz jammer. This module can block BT and Wi-Fi. I designed it so that the cost of its implementation was as low as possible due to the semiconductor crisis. The circuit includes a simple astable multivibrator with a square wave to saw converter for generating... [Read more]