Smart Home IoT Expert
p.kaczmarek2
Ask a Question
Czy wolisz polską wersję strony elektroda?
Nie, dziękuję Przekieruj mnie tam
I would like to invite you to a destructive demonstration of a powerful outdoor LED lamp with a PIR motion sensor. The equipment came to me completely inoperable, so I decided to check its construction for teaching purposes. I was mainly puzzled by what was broken, and how the LED control and the motion sensor were implemented. I don't know...[Read more]
Here is a comparison, current measurements and a presentation of the interiors of the two displays - the first is the older LCD 8" TV Tevision MD30108K offering antenna and AV input, and the second is the slightly newer EM713/SX-LCD-7CAL 7" 1024x600 IPS/PLS, already compatible with VGA, HDMI and powered by USB. I will check both units with,...[Read more]
Eightree ET31 Smart Plug with Energy Monitoring 13A (BK7238 T1) Note: loads of editing and moving parts here and there, so things might not be exactly spot on - if anything appears non-sensical, you will have to trust that it made sense before I cut/pasted the paragraph higher/lower. or not. Description It plugs into a mains UK socket using...[Read more]
I bought a couple of these and managed to get it working with OpenBeken: Some info: - Webshop link - Datasheet - Product code: 3208075 - CBLC5 module with BK7231N - LED driver (U2) is a SM2185N - The 3v3 for the CBLC5 module is provided by a BP2571 buck converter. This post has a really good description how to disassemble this device: To...[Read more]
![Simple Python application for Fluke meters remote access via RS232 [early prototype]](https://obrazki.elektroda.pl/4431109600_1767465996_thumb.jpg "Simple Python application for Fluke meters remote access via RS232 [early prototype]")
I’d like to share an early prototype of a Python app designed for remote access to Fluke meters using RS232. At the moment, it supports basic communication and data retrieval. It's using CPL protocol over RS232 connection to send commands and receive information from scopemeter. So far, it was tested mostly on Fluke 199C. The app itself is...[Read more]
Is a catalogue note in a foreign language a problem in 2026? Today I will test whether artificial intelligence can replace a translator and translate subtitles from electronic parts specifications into English. Importantly, the whole experiment will be based on screenshots (bitmaps) rather than PDF files, so AI will have no way to make its...[Read more]
Hello This is my first teardown article so please for understanding. Introduction I bought water leakage sensor DYGSM DY-SQ400B from Aliexpress for 1$. I wanted to connect it directly to my HA instance (bypass Internet connection requirement, which could be a bottleneck during critical situation). I flashed it with great OpenBeken (great...[Read more]
For several years, Elektroda has been developing universal, open-source software for various types of Wi-Fi-controlled building automation devices, such as relays, LED lamp and LED strip controllers (including WS2812), thermostats, energy meters, or there temperature, humidity, motion sensors. Along with the firmware, a list of supported...[Read more]
Some time ago I presented how reverse geocoding (converting geographic coordinates into address data) can be run locally based on the Nominatim service from OpenStreetMap. Here I will show a similar system, this time realised manually in Python based on ready-made libraries and ready-made official maps of administrative units provided by...[Read more]
I would like to invite you to a demonstration of the interior and software changes of the Tuya universal IR remote control. The device shown here is capable of receiving and transmitting infrared signals in various remote control standards such as RC5, RC6, NEC, etc. The whole thing is controlled from Wi-Fi, so various complex mechanisms...[Read more]
In this topic I will show how anyone can run the Nemotron 3 Nano on their own computer and then test it with all sorts of electronics and programming tasks. The Nemotron 3 Nano is a new thinking LLM model based on a Mixture-of-Experts architecture with a Mamba-2 + Transformer hybrid. The model has 30 billion parameters, but only about 3-4...[Read more]
Do you like old video games? The console presented here allows you to run many titles from different platforms such as Atari, NES, PlayStation or Game Boy, all in one handy device. With an open system and a large number of emulated platforms, the possibilities are truly great - let's find out how it's made and based on which system it works....[Read more]
Here I will present the WEP 8858 portable hot air, also often advertised as a 'plastic welder' or as a '100-650W digital soldering station'. I will check how it handles the soldering of components from the motherboard and then try to measure its power consumption and the temperature reached and show this in the form of accessible graphs....[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]
Are 'smart' LED lights designed to overheat? What temperature will such a "led" light reach after a quarter of an hour of operation? Is it somehow possible to reduce its heating and prolong its life? I invite you to a presentation of the interior, measurements, and firmware changes of the SL20, a Wi-Fi controlled LED lamp offering control...[Read more]
Recently time code from OBK was changed to allow for more time sources (beside the well known NTP). The possibly simplest method is setting the OpenBeken time to the time of the device you are using to access the GUI (this is allready in OBK code, just not enabled): Setting device time to browser time If you define "ENABLE_TIME_PMNTP" in...[Read more]
Can the tiny eight-bit PIC12F683 microcontroller handle the dynamic colour animation on the WS2812 LEDs? The MCU used here has just 2048 bytes of Flash memory, 128 bytes of RAM and is clocked at up to 20 MHz (8 MHz for the internal oscillator). Is this enough? Let's find out! The idea came from the fact that I have a dozen or so of these...[Read more]
![[BK7238] Teardown Smart Plug Sonoff S61STPF with BK7238 modded to OpenBeken](https://obrazki.elektroda.pl/9129170400_1766188545_thumb.jpg "[BK7238] Teardown Smart Plug Sonoff S61STPF with BK7238 modded to OpenBeken")
This is a teardown and modding guide to OpenBeken of the Smart Plug Sonoff S61TPF which is available at Amazon for 10,99 € in December 2025. The device looks as follows Before starting the teardown: The procedure requires experience in opening plastic housings, soldering, especially desoldering and knowledge about electrical safety. We are...[Read more]
Here is a short presentation of the inside of the Blaupunkt model MS8BK microwave with CD and USB player. I will check here how it is built, try to analyse its firmware from an unknown microprocessor and determine its architecture in Ghidra, and then run its display with Arduino. Interior of the MS8BK The equipment came to me decomposed,...[Read more]
ESPConnect is an advanced tool for managing ESP family microcontrollers without having to install desktop applications. It allows you to read and upload the contents of the chip's Flash memory. It allows you to view detailed device information such as chip family, MAC, Flash size and clocking. It also has an extensive file system manager...[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]
Good morning. I wanted to introduce my next design which is a threading arm. The base of the machine is a 400 kg magnetic lifter ordered from a well-known Chinese portal for the sum of 330 PLN. . I bolted a flat bar to the top of the magnet with a welded 30 mm shaft. I then screwed linear bearings to the 80x80 profile on both sides and put...[Read more]
. Hi, As the summer season is approaching, I have decided to build a weather station (or rather a "motherboard" for it) to control the irrigation system and also to allow a quick view of current parameters such as temperature, humidity or pressure, with the possibility of extending the functionality. For a while I was looking for ready-made...[Read more]
Edit: 03-10-2025: I have corrected the circuit diagram for normalising the output signals, and refined the buffer (emitter secondary) which was causing some problems. Just for fun, I committed a function generator, sine, triangle and rectangle based on the AD9833 programmable generator (SPI). . . . The project uses a choice of Arduino UNO/...[Read more]
. Welcome. Some time ago I started my adventure with PLC programming. To start with, I found that Siemens LOGO! was sufficient. Creating a program in FBD language is quite transparent but, as you know, the created program must somehow affect reality. It is a good idea to test the written programme on a workbench in order to identify and repair...[Read more]
. Ot, Atari never made a 3.5" station for the 8-bit series. The XF 351 never got beyond the prototype stage. I thought I would change that ;) The choice fell on the XF551. I built the electronics based on a schematic from the net. New board in SMD drawn in DipTrace, ordered from JLCPCB. XF 551 schematic. . Plate. . The choice of drive from...[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]
I would like to invite you to a destructive demonstration of a powerful outdoor LED lamp with a PIR motion sensor. The equipment came to me completely inoperable, so I decided to check its construction for teaching purposes. I was mainly puzzled by what was broken, and how the LED control and the motion sensor were implemented. I don't know...[Read more]
Here is a comparison, current measurements and a presentation of the interiors of the two displays - the first is the older LCD 8" TV Tevision MD30108K offering antenna and AV input, and the second is the slightly newer EM713/SX-LCD-7CAL 7" 1024x600 IPS/PLS, already compatible with VGA, HDMI and powered by USB. I will check both units with,...[Read more]
I’d like to share an early prototype of a Python app designed for remote access to Fluke meters using RS232. At the moment, it supports basic communication and data retrieval. It's using CPL protocol over RS232 connection to send commands and receive information from scopemeter. So far, it was tested mostly on Fluke 199C. The app itself is...[Read more]
Is a catalogue note in a foreign language a problem in 2026? Today I will test whether artificial intelligence can replace a translator and translate subtitles from electronic parts specifications into English. Importantly, the whole experiment will be based on screenshots (bitmaps) rather than PDF files, so AI will have no way to make its...[Read more]
For several years, Elektroda has been developing universal, open-source software for various types of Wi-Fi-controlled building automation devices, such as relays, LED lamp and LED strip controllers (including WS2812), thermostats, energy meters, or there temperature, humidity, motion sensors. Along with the firmware, a list of supported...[Read more]
Some time ago I presented how reverse geocoding (converting geographic coordinates into address data) can be run locally based on the Nominatim service from OpenStreetMap. Here I will show a similar system, this time realised manually in Python based on ready-made libraries and ready-made official maps of administrative units provided by...[Read more]
In this topic I will show how anyone can run the Nemotron 3 Nano on their own computer and then test it with all sorts of electronics and programming tasks. The Nemotron 3 Nano is a new thinking LLM model based on a Mixture-of-Experts architecture with a Mamba-2 + Transformer hybrid. The model has 30 billion parameters, but only about 3-4...[Read more]
Do you like old video games? The console presented here allows you to run many titles from different platforms such as Atari, NES, PlayStation or Game Boy, all in one handy device. With an open system and a large number of emulated platforms, the possibilities are truly great - let's find out how it's made and based on which system it works....[Read more]
Here I will present the WEP 8858 portable hot air, also often advertised as a 'plastic welder' or as a '100-650W digital soldering station'. I will check how it handles the soldering of components from the motherboard and then try to measure its power consumption and the temperature reached and show this in the form of accessible graphs....[Read more]
Are 'smart' LED lights designed to overheat? What temperature will such a "led" light reach after a quarter of an hour of operation? Is it somehow possible to reduce its heating and prolong its life? I invite you to a presentation of the interior, measurements, and firmware changes of the SL20, a Wi-Fi controlled LED lamp offering control...[Read more]
Recently time code from OBK was changed to allow for more time sources (beside the well known NTP). The possibly simplest method is setting the OpenBeken time to the time of the device you are using to access the GUI (this is allready in OBK code, just not enabled): Setting device time to browser time If you define "ENABLE_TIME_PMNTP" in...[Read more]
Can the tiny eight-bit PIC12F683 microcontroller handle the dynamic colour animation on the WS2812 LEDs? The MCU used here has just 2048 bytes of Flash memory, 128 bytes of RAM and is clocked at up to 20 MHz (8 MHz for the internal oscillator). Is this enough? Let's find out! The idea came from the fact that I have a dozen or so of these...[Read more]
Here is a short presentation of the inside of the Blaupunkt model MS8BK microwave with CD and USB player. I will check here how it is built, try to analyse its firmware from an unknown microprocessor and determine its architecture in Ghidra, and then run its display with Arduino. Interior of the MS8BK The equipment came to me decomposed,...[Read more]
ESPConnect is an advanced tool for managing ESP family microcontrollers without having to install desktop applications. It allows you to read and upload the contents of the chip's Flash memory. It allows you to view detailed device information such as chip family, MAC, Flash size and clocking. It also has an extensive file system manager...[Read more]
How to flash and configure RF remote receiver with open source firmware? How to use it to control relays and external devices, with and without Home Assistant? How to add custom remotes? Here's a short guide to RC (Radio Control) driver in OpenBeken, all basics covered. With this tutorial you'll be able to transform your simple RF relays...[Read more]
In Polish measurement equipment it is common to find filters manufactured by Silesia . The diagram on the chassis allows discussion of each part of this filter - the purpose of the choke at the input is to suppress common mode interference ( common-mode interference ), that is, interference that occurs simultaneously on the L and N wires...[Read more]
I will show here the first attempts and a simple "Hello world" for the ALI M3801 processor on the example of an old Comsat TE 1050 HD tuner based on the project ali_sdk from GitHub. I will then try to add new functionality to it - GPIO support. The project shown here is not a full Linux SDK, but on the contrary, it is a minimalist demo built...[Read more]
Today I'm going to present an interesting free solution to connect externally to our local network - for example IoT devices. You won't need a public IP here - everything will work even if we are behind NAT and don't have port forwarding. What's more, there will only be two devices to configure, namely our active computer, and an intermediary...[Read more]
I invite you to another analysis of an older terrestrial TV receiver. In this topic I'll show its interior, view its board with a thermal camera, download the contents of its Flash memory and try to decode the partitions there myself in my own C++ program. At the end I will present the SDK I found, which may fit under this tuner. The topic...[Read more]
I would like to invite you to a presentation of a compact thermal imaging camera with a resolution of 256×192 and a frame rate of 25 Hz, with a measurement range of -20°C to +600°C. The device works directly with a phone and requires no external power supply. The low power consumption (up to 0.35 W) enables hours of operation without significantly...[Read more]
