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Many of you are probably wondering how you can unleash the power of today's artificial intelligence and integrate it into your own projects and products. The most common form of access to LLMs, the popular chat window, is just the tip of the iceberg. Here, I will show how you can integrate modern multimodal models into your own system via... [Read more]
What is the evolution of the kitchen alarm clock radio? Do the newer models differ from the older ones in construction? How is the tuning, display, power supply implemented? Here, I will try to demonstrate this using the example of two kitchen radio receivers from different periods. Let's start with the older one. URB 693A The URB 693A features... [Read more]
Today I am showing two LED controllers that can work without a cloud from the factory. No soldering is required. The first one is the GL-C-309WL, it is based on ESP32 and has an open WLED firmware uploaded. It works 100% locally, we configure it via Wi-Fi. The second is the GL-C-301P, it offers Zigbee communication and can work with Home... [Read more]
An interesting service story today. Can swapping 4 GB RAM for 8 GB damage a laptop so that it can no longer even boot or install the operating system? I have personally found out that this is possible - here I will show what happened and present the solution to the problem. Does your laptop not boot after an upgrade attempt, does not see... [Read more]
Here I will show the inside of a PoE-compliant IEEE 802.3af/at/bt switch with up to 60 W, offering 4 LAN ports (with power), 2 uplink ports and a throughput of up to 1.6 Gbps. PoE (Power over Ethernet), as the name suggests, is a technology that allows data and power to be transmitted simultaneously over the same network cable. For example,... [Read more]
![[Zigbee] ELVICO ELC-SP02 Zigbee Smart Plug Teardown: BL702C10, BL0937](https://obrazki.elektroda.pl/4257987500_1773960324_thumb.jpg "[Zigbee] ELVICO ELC-SP02 Zigbee Smart Plug Teardown: BL702C10, BL0937")
Here is a teardown of an 'ELVICO Smart Plug'. It is intended for Zigbee using the eWelink platform. I have been hunting for bouffalolab-based devices, as my project has been porting those chips to Zephyr RTOS for a few years, and we just got BLE working, enabling usages similar to OpenBeken or Tasmota. The marking on the outside is 'ELC-SP02'.... [Read more]
Here I will introduce two Meross MSS550 switches, the first a touch-sensitive version and the second based on a 'clicky' microswitch. I'll examine how they are built and then I'll post the information I've gathered so far about the interesting Wi-Fi chip on the inside - the Mediatek ARM MT7682. I guess we should start with the fact that despite... [Read more]
I'd like to invite you to a presentation and testing of the cheapest UPS bought with the idea of keeping a computer running for a few minutes after a power loss. Here I'll test it under various loads (including with a power supply with active PFC), I'll look at the output waveform, and finally I'll examine what heats up inside using thermal... [Read more]
Will the Qwen3.5 models allow a simple image search engine to be built by verbal description of the content? Could local AI work in the role of OCR? In the previous topic the AI described more than 1000 images from the Elektroda forum , here I enriched this collection with descriptions from Qwen models 0.8b, 2b, 4b, 9b, 27b, 35b. I have packed... [Read more]
The LC-13-A is a flush-mounted, single electrical socket with earthing and two additional USB ports for powering/charging mobile devices. Its dimensions (width 8.4x8.4 cm, depth 4 cm) allow it to be easily installed in most fi 60 mm boxes. In this topic, I will test how it is built and investigate how hot it will get when operating under... [Read more]
Lately I've been wondering whether a simple USB C hub can provide a wired connection for a phone or tablet to the internet, and whether it can handle multiple storage media or USB to UART converters at the same time. These types of capabilities will allow you to revive a tablet with broken Wi-Fi and turn it into your own home automation controller,... [Read more]
The distinctive orange and black box immediately caught my eye, but I was only convinced by the manufacturer information - Smart from Tomic (according to the packaging). The price isn't so bad either, just £25, so it's probably worth a try. It would be a pity if it turned out again that this product does not have a ground connection.... The... [Read more]
Here I will introduce the Lilygo T-Connect industrial board distinguished by its simultaneous support of up to three RS485 buses and one CAN line. I ordered it from China for around £200. We open the distinctive box and pull out the plate. What strikes you immediately is the ESP32-S3-WROOM-1 module which is the heart of the T-Connect, here... [Read more]
![[Zigbee] The cheapest thermometer ZY-ZTH02 - opinion, interior, firmware change](https://obrazki.elektroda.pl/2613416000_1772802091_thumb.jpg "[Zigbee] The cheapest thermometer ZY-ZTH02 - opinion, interior, firmware change")
Hello, until recently, the prices of devices on Zigbee were higher compared to equivalents on WiFi. Nowadays they have evened out and even dropped. Unfortunately, the build quality has also dropped. Initially, a ready-made module containing a chip supporting a particular type of network was used for communication. Over time, the chip itself... [Read more]
Here I will show how to make and connect a custom remote control module for iRobot Roomba 500-800 series hoovers. The control will be via Wi-Fi and will offer ready integration with Home Assistant via MQTT. The hoover modified in this way will be able to work according to a schedule, follow sent commands and will operate fully cloudless.... [Read more]
That is - a paradigm shift in printer accuracy following the installation of a piezo sensor (Piezo Probe). I would like to share with my colleagues my observations and lessons learned from the transition from the electro-mechanical BL-Touch sampler to the piezo sampler, which samples the table via the end of the print nozzle. Since I installed... [Read more]
How do you recognise the architecture of an unknown microcontroller from a Flash memory dump? What microprocessor is an old HP printer based on? Will it be possible to revive the memory dump so that it displays something on the UART with proper emulation of its registers on a Windows PC? That's what I'll try to test here. The neighbours threw... [Read more]
How to monitor energy consumption in building automation? One solution for individual consumers can be some kind of extension cable or adapter that takes the measurement, but it is undoubtedly more convenient to have the measurement in the socket itself. The ZK-SR-EU shown here makes this possible. The ZK-SR-EU takes the form of a flush-mounted... [Read more]
Have you connected the flash memory correctly to the CH341 programmer, but the PC program does not recognise it at all? NeoProgrammer shows IC not responding, is the chip faulty? The Read ID operation (reading the flash ID) returns 0xFF alone? Don't give up - here I'll show an unusual case demonstrating well that some memory chips simply... [Read more]
As a rule of thumb, it has been accepted that the MQTT broker must be a high-performance server, a cloud service, or at least a Raspberry Pi-style microcomputer. The question, however, is - are you sure? Wouldn't it be possible to realise a simple MQTT server on a chip like the ESP32 or BK7231, with a limited RAM size of, say, a dozen or... [Read more]
Good morning. I made this kinetic splitter in the spring, but have only now decided to show it off on this forum. Toothed strip module 5, which is 50x50 mm. Most of the components, such as the carriage and bearing mounts, are made of 10 mm sheet metal. The splitter is engaged by the pressure of the toothed bar against a spur gear connected... [Read more]
I made myself a two-digit thermometer with a red ELD-515SURWA seven-segment display (soldered out of a Euroster 1100E thermostat) and a DS18B20 sensor. The electronics fit on a 2x8 cm cutout of a 6x17 mesh universal board. The housing is a white 2xRJ11 6P4C surface-mounted telephone socket. Power supply from a 5 V / 120 mA switching power... [Read more]
I have made myself a transformer rectifier to charge my car battery, with automatic charge control - on an on/off basis - so that charging can be left unattended for long periods. The circuit has two basic tasks: - enable charging when the battery is connected - switch off charging when the battery is charged or in an error situation The... [Read more]
Nothing special to brag about. However, here is a project I made. The device moves to the right by 5 pixels every 1 minute, then back by 5 pixels. Written in Arduino for a Raspberry Pi Zero (RP2040) board. You may ask, why make this when you can buy something like this? And this is for 2 reasons: 1. cheaper, 2. in bought ones the mouse pointer... [Read more]
DIY Kiosk - or electronics magazine During the construction phase... Hello esteemed forumers. The year 2025 is upon us and, as is customary, it is good to have some New Year's resolutions. I decided that I would start the new year by putting my studio, and workshop, in order. What was my surprise when I opened the book calendar for 2025, where... [Read more]
Good morning. I would like to show you my mini hauler, which is powered by an engine from a petrol scythe. The 3hp internal combustion engine comes from a NAC scythe and is connected to a 60:1 worm gearbox. The gearbox drives the differential from the mower tractor, on which the 18-8.00x8 wheels are mounted. The kipper is manual and the change... [Read more]
Recently, when building a controller for my cooker, I decided to experiment with something simpler. Admittedly, I'm not keen on Wi-Fi control, but I was curious to see how low the current consumption could currently be. In the off-the-shelf solutions I tested, the consumption ranged from 0.3 W to 1 W. So I bought some Zigbee modules, a couple... [Read more]
The NE555 astable circuit - how to make a flashing LED The NE555 chip is one of the most popular and widely used integrated circuits in electronics. Due to its simplicity, versatility and low cost, it is used in many projects such as pulse generators, clocks, timers and flashing LEDs. In this article, I will present a simple circuit with the... [Read more]
Hi, under this unusual topic name I present a project of a small automatic music player to make sitting on the toilet more pleasant. Of course this is one application, in other situations it could probably be useful too ;) The main considerations were low complexity, a trivial interface, maintenance-free after initial set-up, and room for... [Read more]
Hello forum members. I would like to present a chassis design I have made for the Raspberry Pi 4 that works with the IQaudIO DAC Pro card. The device serves as a music streamer from a home NAS server and can play audio material in 16-24 bit quality. I used the Volumio system as the software. Operation is possible both from the mobile app and... [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 many years. Recently, looking through my electronic scrapbooks,... [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 design my PCBs in KiCAD so I focused on this input format.... [Read more]
Today, I would like to introduce an interactive Arduino music project. Using six obstacle avoidance modules and DF’s MP3 module, we will build a musical piano (originally, I had eight obstacle avoidance modules, but during assembly, I found that two were incompatible and lacked indicator lights. Since replacing them in time was not feasible,... [Read more]
Hi! This piece details building a two-wheeled self-balancing vehicle with a Raspberry Pi. It covers the rationale for choosing the Pi—repurposing idle hardware and learning Linux development via DIY work—lists components (Raspberry Pi, MPU6050, motor drivers, etc.), outlines development steps (sensor calibration, motor control, PID implementation),... [Read more]
Hi I would like to present another project of mine, this time it is a CNC controller. . . There are already a bunch of different types of CNC machine tool controllers on the market, but as usual I wanted to make something of my own. Key design considerations: - Location of all time-critical operations in the execution module. - Connection... [Read more]
. I prove that it is possible to measure instantaneous power and watt-hours consumed with the cheapest bicycle meter, a phototransistor and a resistor :) You only need to: - take the plus battery out of the meter - cut the reed switch from the cable and identify which of the two wires is the minus of the battery - connect the emitter of the... [Read more]
Ultrasonic PWM with soft start for speed control of a DC motor. . The circuit was created out of the need to smoothly regulate the speed of a VAG automotive wiper motor. The motor drives the knot toaster shaft via a 2:1 gear ratio. Previous methods using two motor speeds and two voltages from an ATX power supply (somewhat regulated) proved... [Read more]
. More than a decade ago on "Elektroda" I saw a cool toy project for a child: I thought it was a pity that my children are already too big for such a toy. But time flies fast and in the meantime my grandson turned two. And I was reminded of that project. Most of the reasons for building and construction ideas are almost clones of the ideas... [Read more]
Hello everyone! I come to you with a project that dragged on for me for almost 4 years - a tube amplifier, which was my school of tube electronics. During this time I made a lot of mistakes, learned a lot and today I can say with a clear conscience that "I already know something". 😊 Initially, this was to be a clone of the schematic-based... [Read more]
. Before publishing, I wondered if anyone else was interested in this topic. But maybe there is still a maniac for flashing lights :) . Illuminophony - a somewhat forgotten topic. The device has, in my opinion, undergone a backward evouluation and at the outset let me quote my colleague @Preskaler who wrote 20 years ago: The idea of illuminophony... [Read more]
:smile: Over 10 years ago Gerhard Schmidt DG4FAC on avr asm tutorial.net (site already not exists) :cry: presented such a circuit :idea: LED effect based on ATtiny13 ; ; *********************************** ; * Ledlight with an ATtiny13 * ; * (C)2012 by avr-asm-tutorial.net * ; *********************************** ; .nolist .include... [Read more]
For some time now, I became interested in network security and came across an article on how to make a Wi-Fi Jammer (deauthentication attack). I did not even suspect that you can make someone's life so easy and simple. To make a Jammer All we need is esp8266. The principle of operation is very simple. Our device pretends to be a router... [Read more]
The author of the following project, having no experience with Raspberry Pi, set about creating a simple air conditioning control system. As he did very well, he decided to create the following guide so that any other person could also build a similar device. Step 1: What you'll need To compile the system described below we need: * Raspberry... [Read more]
Do you have audio equipment that is too old to support Apple Airplay that you want to use? You don't want to replace it with lower-quality wireless speakers, but want to listen to music from the Internet? This is a common problem. The good news is that solving this problem costs as much as the Raspberry Pi - not much. Based on this minicomputer,... [Read more]
In the material below, the author describes how to use Arduino and an RFID reader to build a simple lock. In this system, Arduino reads the RFID tag ID with the help of a special reader. The identifier is displayed on the OLED screen, and if it matches the number stored in the system's memory, it displays the word "Unlocked", it can also... [Read more]
The project below is a weather station based on a module with ESP8266. There would be nothing special about it that distinguishes it from other such constructions, if not for the optimization of the system in terms of minimizing power consumption. The microcontroller used is not very energy-efficient, so it works on average in battery-powered... [Read more]
Currently, in the era of simple and inexpensive GSM modules and Arduino modules, it is very easy to construct an SMS-controlled relay. In the project below, the author used the SIM800L module to receive SMS messages. The whole system is controlled by the Arduino Nano V3 module. The system is equipped with one relay, which is controlled by... [Read more]
Thermal imagers have been fascinating for years. The idea that you can watch images in a part of the spectrum of electromagnetic radiation, inaccessible to our eyes on a daily basis, is extremely interesting and appealing. Unfortunately, the implementation of this task is not cheap - especially if we want to buy this type of camera only to... [Read more]
Microchip ATM90E26 is an integrated circuit dedicated to use in modern power consumption monitoring systems. It allows for easy integration with advanced monitoring systems of the power network within, e.g. our home. The use of such a system together with, for example, photovoltaic systems allows you to monitor the level of generated energy,... [Read more]
Most computer platforms have the ability to connect sensors that operate in the audio band (microphones) or in the visible light (e.g. cameras). However, sensors for electromagnetic radiation in the radio range are not popular and until recently it was difficult to connect to computers systems allowing for any collection of radio waves. In... [Read more]
Pigeon is a simple webcam, dedicated to work in the cloud. It is based on the Raspberry Pi Zero W, costing just $ 10. The minicomputer, together with the camera, are enclosed in a housing made in 3D printing technology. A simple handle is integrated with the housing, which allows it to be mounted anywhere, e.g. on the wall. The software itself,... [Read more]
In Brazil, the Raspberry Pi Zero overclocking record has just been set. The team managed to achieve a clock frequency of 1600 MHz and test such an extremely overclocked computer. This gave them the first place in April in the HWBOT ranking for SoC BCM2835, which is in RPi Zero. The whole overclocking began with one teaser on social networks,... [Read more]
The description below shows how you can convert a Raspberry Pi with a GSM modem to USB into a gateway for sending SMS via the web interface. The project was created using PHP and C #. The software that communicates with the modem is written in C #, and the web front-end in PHP. In addition, the system is equipped with a PostgreSQL database,... [Read more]
The environment monitoring system, based on the LoRa IoT interface, consists of a base station built using the Arduino Mega module with a LoRa gateway and remote stations based on the Arduino Feather, which connect to the base station via the LoRa radio interface. The system allows monitoring of environmental parameters in the house and its... [Read more]
Pi-FM-RDS is an FM radio transmitter equipped with RDS, running on Raspberry Pi. The GirHub downloadable program is responsible for generating a frequency modulated (FM) waveform with encoded RDS data (data transmission system with audio transmission). All this works in real time and is able to work with both mono and stereo audio signals.... [Read more]
The electronic fuse eliminates the need to replace the element that burns out with excessive current when using a classic fuse, e.g. a fuse. This element does not act as a current limiter in any way - when it rises above the set limit, the system disconnects the circuit. The limiter would instead limit the flowing current to a predetermined... [Read more]
This simple device has one task - it converts received exiles, broadcast in a walrus alphabet, to Latin letters. This translator can find many applications. With it, you can train your morse broadcasting skills, but also decode data received from the ether. It may be amazing, but the walrus alphabet is still very popular in amateur radio,... [Read more]
This article will describe how to display and record car diagnostic information with a Raspberry Pi. Step 1: Required materials To complete this project you will need: o Raspberry Pi Model B or B + o Car stereo (must have an AUX socket) o Bluetooth adapter o Car charger o USB or Bluetooth adapter based on ELM327. o RCA cable o Keyboard (optional)... [Read more]
Spot welders are used in almost all plants where it is necessary to join sheets. The advantage of welding machines is the precision of joining (with very good electrical contact), and a very low voltage between the electrodes, which makes the device safe. The presented device is of course not a professional welding machine, but an amateur... [Read more]
Hello. I made a soldering iron for plastic. I saw a similar company, and that the construction is very simple and you have to pay for welding, it is worth doing. 5mm diameter, 2m of hose, a piece of cable with a plug. The required pressure is 0.5 ÷ 1.5 bar. I used a simple regulator on a triac to regulate the heater. And the cube to connect... [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 encoder and IR receiver. I was going to do the enclosure but... [Read more]
. I would like to present an application that is a collection of test tools using CH341 as a physical interface. The original purpose of this application was to repair laptop batteries. However, I had to familiarise myself with the CH341 chip beforehand, I started with more elementary functions like I2C support and the application took the... [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. So I thought that in order to save costs I would build something... [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 probably not a little bit. First things first. This project... [Read more]
The idea came from the fact that the 5-year-old daughter is willing to drive all kinds of vehicles. He packs on a motorcycle, he wants to drive the car, he stays in the tractor with his grandparents, etc. So I decided to build something for her that would allow to develop certain habits of the driver and provide a dose of adrenaline and child's... [Read more]
Hello. I am honored to present my present work committed in 15 minutes during the performance of works at the end of the world, i.e. in Central Poland. Needed was a flow meter with pulse output to control the chemistry dosing pump. Of course, there are ready-made flow meters / water meters with such a function, only that within a radius of... [Read more]
Hello a project done (almost a year ago) quickly in order to show the younger generation what can be done with the idea of some parts (the rest can be done). Hardware: Robot platform bought from China Adruino on the atmega 328 Double H-bridge controller for motor control Converter from 12V-> 5V for the webcam WiFi camera dcs-5222l Akku 11.1V... [Read more]
Hello. I would like to present an electro-spindle made by me from a 2.2kW 2800rpm "dachshund" type engine. The design was created for use in a small universal milling machine for machining aluminum and steel. I decided on my own design, because within the budget I would have to choose a liquid-cooled Chinese reaching 25 thousand rpm, but... [Read more]
Hello! I would like to present the Bethlehem Star I made two years ago. The entire structure is made of sheet metal. There are 78 5mm LEDs in the drilled holes (34 red, 33 yellow, 10 green, 1 blue). The star's tail is the ne555 + cd4017 base configuration. Three series-connected LEDs are connected to each counter output. The center of... [Read more]
Hello, I wanted to present a simple and proven (using the GLUCOFACTS Deluxe v3.05 program) cable to read data from the Bayer Contour TS glucometer. Of course, there is nothing extraordinary here, and his advantage lies in simplicity. For anyone who needs to archive measurements from time to time and has a computer with an RS-232 port, it... [Read more]
Many of you are probably wondering how you can unleash the power of today's artificial intelligence and integrate it into your own projects and products. The most common form of access to LLMs, the popular chat window, is just the tip of the iceberg. Here, I will show how you can integrate modern multimodal models into your own system via... [Read more]
What is the evolution of the kitchen alarm clock radio? Do the newer models differ from the older ones in construction? How is the tuning, display, power supply implemented? Here, I will try to demonstrate this using the example of two kitchen radio receivers from different periods. Let's start with the older one. URB 693A The URB 693A features... [Read more]
An interesting service story today. Can swapping 4 GB RAM for 8 GB damage a laptop so that it can no longer even boot or install the operating system? I have personally found out that this is possible - here I will show what happened and present the solution to the problem. Does your laptop not boot after an upgrade attempt, does not see... [Read more]
Here I will show the inside of a PoE-compliant IEEE 802.3af/at/bt switch with up to 60 W, offering 4 LAN ports (with power), 2 uplink ports and a throughput of up to 1.6 Gbps. PoE (Power over Ethernet), as the name suggests, is a technology that allows data and power to be transmitted simultaneously over the same network cable. For example,... [Read more]
I'd like to invite you to a presentation and testing of the cheapest UPS bought with the idea of keeping a computer running for a few minutes after a power loss. Here I'll test it under various loads (including with a power supply with active PFC), I'll look at the output waveform, and finally I'll examine what heats up inside using thermal... [Read more]
Will the Qwen3.5 models allow a simple image search engine to be built by verbal description of the content? Could local AI work in the role of OCR? In the previous topic the AI described more than 1000 images from the Elektroda forum , here I enriched this collection with descriptions from Qwen models 0.8b, 2b, 4b, 9b, 27b, 35b. I have packed... [Read more]
The LC-13-A is a flush-mounted, single electrical socket with earthing and two additional USB ports for powering/charging mobile devices. Its dimensions (width 8.4x8.4 cm, depth 4 cm) allow it to be easily installed in most fi 60 mm boxes. In this topic, I will test how it is built and investigate how hot it will get when operating under... [Read more]
Lately I've been wondering whether a simple USB C hub can provide a wired connection for a phone or tablet to the internet, and whether it can handle multiple storage media or USB to UART converters at the same time. These types of capabilities will allow you to revive a tablet with broken Wi-Fi and turn it into your own home automation controller,... [Read more]
The distinctive orange and black box immediately caught my eye, but I was only convinced by the manufacturer information - Smart from Tomic (according to the packaging). The price isn't so bad either, just £25, so it's probably worth a try. It would be a pity if it turned out again that this product does not have a ground connection.... The... [Read more]
Here I will introduce the Lilygo T-Connect industrial board distinguished by its simultaneous support of up to three RS485 buses and one CAN line. I ordered it from China for around £200. We open the distinctive box and pull out the plate. What strikes you immediately is the ESP32-S3-WROOM-1 module which is the heart of the T-Connect, here... [Read more]
How do you recognise the architecture of an unknown microcontroller from a Flash memory dump? What microprocessor is an old HP printer based on? Will it be possible to revive the memory dump so that it displays something on the UART with proper emulation of its registers on a Windows PC? That's what I'll try to test here. The neighbours threw... [Read more]
Have you connected the flash memory correctly to the CH341 programmer, but the PC program does not recognise it at all? NeoProgrammer shows IC not responding, is the chip faulty? The Read ID operation (reading the flash ID) returns 0xFF alone? Don't give up - here I'll show an unusual case demonstrating well that some memory chips simply... [Read more]
As a rule of thumb, it has been accepted that the MQTT broker must be a high-performance server, a cloud service, or at least a Raspberry Pi-style microcomputer. The question, however, is - are you sure? Wouldn't it be possible to realise a simple MQTT server on a chip like the ESP32 or BK7231, with a limited RAM size of, say, a dozen or... [Read more]
Is it possible to connect an ordinary USB keyboard to an ESP32-based device and link it to a touchscreen display? Yes - it's not that difficult at all. In this step-by-step topic I will show you how to start USB Host mode, integrate the keyboard with LVGL and handle input events correctly. I have based the demonstration on the ESP-S3 board,... [Read more]
Is it sensible to buy a tiny, battery-powered soldering iron? Can such a soldering iron cope with soldering wires or goldpins? I invite you to a video test - with a breakdown of lead and lead-free solder. I bought the soldering iron for £30 - importantly, you can also buy soldering tips for it. There was a bit of a wait for shipping, but... [Read more]
![[Zigbee] Software change in thermometer TY0201 (RSH-HS03)](https://obrazki.elektroda.pl/7479207200_1771754694_thumb.jpg "[Zigbee] Software change in thermometer TY0201 (RSH-HS03)")
Hello, in this topic I will present a software change via OTA in a Zigbee thermometer. Why am I changing this software over at all? Well, while it is very cool in appearance, has a display and is powered by two AAA batteries, unfortunately the factory software is an example of how softwares should not be written for Zigbee. So: - Very short... [Read more]
Why change the firmware of IoT devices? One good reason to change the firmware may be to expand the functionality of your existing device. Factory applications usually do not allow for large modifications, whereas open source projects provide almost infinite possibilities. Here, I will show just such a modification using Tuya's RGB LED strip... [Read more]
I would like to invite you to a presentation and launch of a fully open source ESP32 development board from Olimex. Everything is available for this project - you can even download the PCB design in KiCad and customise it to your needs. The ESP32-EVB features the ESP32-WROOM-32E Wi-Fi/BT module, an additional LAN8710A wired Ethernet controller,... [Read more]
Today, another curiosity from the electro-junk - a main computer/controller which, according to my information, was used on trains. I'll try to get it up and running here, get into the BIOS, etc. This time the presentation will be even more rich than usual, as I got this equipment in one and a half copies. The first thing that catches the... [Read more]
Here I will present a multiplatform IoT flashing solution – an early prototype of EasyGUIFlashTool . The goal of this project is to provide a simple, consistent, and user-friendly flashing experience across multiple platforms, without the need for vendor-specific tools or complex setup procedures. The same workflow and GUI concept are shared... [Read more]
![[LN882HKI] How do I flash Mini Smart Breaker RMW002 WB02A-0882H?](https://obrazki.elektroda.pl/3205271700_1774372702_thumb.jpg "[LN882HKI] How do I flash Mini Smart Breaker RMW002 WB02A-0882H?")
