Articles

WBR3 is a distinctive Wi-Fi module based on the W701-VA2-CG (RTL8720CF) chip. The WBR3 is distinguished by the fact that the necessary signals for its programming are located only on its underside, making it necessary to solder the module off the board for firmware changes. Additionally,... [Read more]

There are an increasing number of backplane relay modules on the market based on the T34 chip. The T34 is an integrated Wi-Fi chip that is a smaller version of the popular CB2S/CB3S/itd based on the BK7231N core. Although it is still the same chip from the software side, changing... [Read more]

Power Smart Control: Delivering Innovative Solutions for Power Electronics Madrid, Spain – [28.10.2025] – Power Smart Control (PSC) is empowering innovation in power electronics through cutting-edge design software, rapid prototyping hardware, and engineering services. Founded in... [Read more]

Ever wondered how it works and how a battery-powered doorbell with a camera is built, in addition to interacting with a mobile app via Wi-Fi? Here, I will try to demonstrate this. I will also see if it is possible to program the microcontroller from inside. The kit comes with a battery-powered... [Read more]

I'd like to invite you to a demonstration of the interior, construction and software change of yet another device offering remote control via Wi-Fi with a split between four 230 V sockets, a 5 V line (four USB ports together) and energy metering. The strip shown here is based on the... [Read more]

Here I will show how to easily establish a connection to an MQTT broker from a web browser. I will use an off-the-shelf MQTT library that connects to the broker via a WebSocket mechanism and demonstrate how it can be used to receive and send data via Mosquitto installed together with... [Read more]

Warsaw Industry Week 2025 – The Largest Industrial Fair in CEE Discover the future of industry at Warsaw Industry Week 2025 – the largest industrial technology fair in Central and Eastern Europe. From November 4–6, 2025, Ptak Warsaw Expo will host the ninth edition of Warsaw Industry... [Read more]

I had previously bought a set of these around 2020 because they contained an ESP-12F with Tasmota support. later I bought some more, but they changed the chip used in them. Thankfully I've found people have been making a similar firmware for this board as well. There's no guide for... [Read more]

The subject of the TH08 sensor, based on the CHT8310 chip and offering Wi-Fi connectivity, has already been raised many times in our forum. Its integration with the Home Assistant proved possible, albeit quite challenging. This time I will show its Zigbee variant, whose pairing with... [Read more]

. The Svensson SMART06B is a remote-controlled electric kettle compatible with the Tuya app. It offers control over temperature and heating time. Here I will show how its firmware can be changed to make it compatible with Home Assistant. This will also result in it being cut off from... [Read more]

In recent days, an interesting story of a certain repair has played out on the channel of the US-based service NorthridgeFix, which is based in Los Angeles. Its author, Alex, regularly posts videos in which he demonstrates live the process of diagnosing and repairing damaged electronics.... [Read more]

As simple radio receivers are invariably of interest, I have decided to present a rather interesting design for the current technical realities. This is one of the first electronic circuits I had the pleasure of building, but unfortunately, for various reasons it lay unfinished for... [Read more]

. We have practically always used a simple USB to UART converter based on the popular CH340 chip to program IoT devices. Recently, however, I realised that you could just as well program wirelessly using a second Wi-Fi module and a UartTCP driver with an additional script that either... [Read more]

. What is it that a boiler with a Wi-Fi module inside offers? How is it built, what does the app offer? Can its firmware be changed? I invite you to the first part of the adventure with the Ariston Velis 80 and the Ariston NET app - today we will start with the purchase, the unpacking,... [Read more]

NextPCB launches “$200 Off PCB Assembly” to speed up prototyping and small-batch builds NextPCB announced a limited-time $200 USD discount on turnkey PCB assembly (PCBA) for orders of 1–10 pieces , helping engineers, makers, and startups turn ideas into testable hardware faster and... [Read more]

Are you looking for a simple to run but effective LED strip for TV mounting? I've got something for you - treat yourself to a report on the installation, setup, calibration and month of using the LED light Govee TV Backlight 3 Lite tested on a 42-inch TV. What you need to know to... [Read more]

BK7231GUIFlashTool version 98 and above introduces a new Beken flashing method via SPI. Only a CH341 SPI programmer is required. This method can be used to recover bricked Beken devices whose bootloader has been overwritten. It can also serve as a general-purpose SPI flasher, supporting... [Read more]

When I visited an electronics colleague recently, he surprised me by putting a small object on the table and asked what the electronic component could be. The component was working on a board in digital circuits. On the casing you will see the markings VCC, GND and OUT. You might... [Read more]

. Ever wondered what a remote control for an electric kettle could offer us? The SMART06B has just such a control - all thanks to its built-in Wi-Fi module and compatibility with the Tuya mobile app. Here, I'll try to check it out and showcase it, including the centre of the device.... [Read more]

I picked up a Volumio a couple of years ago. I wrote a bit about it in my topic on guitar amplifiers. For the project I purchased a Rasberry Pi4 B, a Hifiberry DAC2 Pro and an "official" 7-inch touchscreen display. The system that was installed was Volumio 2.917 and I hooked up an... [Read more]

. The Orno OR-SH-17200 WiFi Tuya single switch is another product that can be easily freed from the cloud and connected to the Home Assistant. What's more, inside it you will find a CBU module based on the BK7231N, which allows various interesting modifications after changing its... [Read more]

. Shown here is a tiny but simple to reprogram garage door controller. The controller shown here normally interfaces with the Tuya cloud and offers door status detection based on an external sensor and the ability to simulate the pressing of a door button via a single voltage-free... [Read more]

I. Introduction During embedded system development, measuring various signal waveforms is a crucial troubleshooting method. Bench oscilloscopes are typically used for waveform analysis, but their large size makes them inconvenient for field testing or travel. For some individual developers,... [Read more]

PCBWay offers free purple solder mask and up to 80% off TPU 3D printing in September PCBWay announced two promotional offers available from September 1 through September 30, 2025, designed to give customers greater flexibility and cost savings on PCB and 3D printing services. The... [Read more]

Hi Guys, I post this information, as a work/response for old threads for this device : Earu EAKCB-T-M. Device is not listed in device database. Device was listed as work in progress 3 years ago Device was reported unstable (restart when button pressed) ( Original Polish thread here... [Read more]

LAN/RS-485 converter ET69C02 . DHCP in this converter is disabled you can enable it Configuration TAC4300-CT bidirectional three-phase meter You need to set the communication address according to instruction(2. Setting the modbus communication address) 255 in the configuration.yaml... [Read more]

. Here I show how to run an RGBW LED strip with DMX512 based on firmware WLED on a board with built-in RS485 support. DMX512 is a communication protocol used primarily in stage lighting that allows multiple devices, including coloured LED strips, to be controlled over a single RS485... [Read more]

Hi, . The project presented this time is purely programming but I hope it fits in this section and maybe someone will find it interesting or useful in the workshop. The aim of the project was to create a convenient-to-use GCode generator for making PCBs on a CNC milling machine. I... [Read more]

Waveshare ESP32-S3-Relay-6CH is an industrial-grade relay control module based on ESP32-S3 WiFi & BT module. It features RS485 connectivity, on-board USB to UART converter, six relays connected via PC817 optocouplers, a single WS2812B diode (for status display), onboard GPIO connector... [Read more]

Google has announced the end of support for older models of the Nest Learning series of thermostats. From 25 October 2025, these devices will no longer connect to Google Nest or Google Home apps. This means that equipment advertised as smart will suddenly lose much of its functionality... [Read more]