Articles

Hello, as Christmas is fast approaching, I would like to present you an egg printer (in the sense of Easter eggs :wink: ) that I recently launched. This is one of those unnecessary projects, but that's where fun counts :D I designed all the necessary elements of the structure... [Read more]

Panel meter of power consumption / consumption of electricity type P06S-20 and P06S-100 I received the above two power / energy meters for testing. They are identical in appearance, the only difference is the transformer attached to the stronger version. The dimensions of the module... [Read more]

Everyone likes Arduino, from the smallest modules on Attiny85 to the largest modules based on MEGA2560 microcontrollers. Unfortunately, they have their limitations - if we need more computing power, higher precision or more analog inputs, we do not have much choice in the Arduino... [Read more]

Hi, today I wanted to present you my construction of a 3D printer from start to finish designed and made by me! I'll start with the construction, at the end I'll summarise the costs :) I got interested in 3D printing through the 3D printing circle in my department at university, as... [Read more]

Hello everyone Today I would like to introduce you to the design of a tube amplifier, this is my second tube design. After the successful construction of a long wave tube radio receiver - link below I decided to build a tube amplifier - as the budget for a tube amplifier was not too... [Read more]

Welcome back. This time I present a retro-emulator based on the Chinese FPGA by Anlogic. The emulator has 8MB of 32bit SDRAM embedded in FPGA. The JDY-08 wireless module based on the CC2541 chip, which I programmed with my own FW, is responsible for communication with the keyboard,... [Read more]

Hello I present my next CNC milling machine which I have not finished long ago. The purpose is mainly: milling, engraving, cutting in materials such as: - wood - mdf - plexiglass The main assumptions are: a large working field combined with the stiffness of the structure and good... [Read more]

Hello everyone. Today I wanted to demonstrate how to give the Anet A8 3D printer a new function in the form of a laser plotter. I have described the whole project at For this project you will need a laser that we can buy in China. It is important to pay attention to its power –... [Read more]

Hello to all forum members! Today I would like to present a project that was created out of pure boredom now, because I felt a bit sick ;) Seriously, I have the Multidiag Pro + diagnostic interface with slight modifications, and I wanted to see how it works, what it sends, and what... [Read more]

It took me a little bit, but as promised, I am presenting you a "Chinese" branded meter UNI-T though I don't know how much truth there is :D . This multimeter is available in several versions (from AND down E. ) that differ in their functions. I have purchased UT210E , because... [Read more]

Recently, a few people from our forum ordered the UNI-T UT33 multimeter, which I learned from the thread Gadgetomania - gadgets Electrodes for points . As literally a few days earlier I got such a multimeter (version with the letter "B" at the end) from a friend, because he was in... [Read more]

Hello, I present to you a project that I have been working on for the last year. It is a 5-axis manipulator based on the Arduino Uno board. I started the project with the desire to develop my existing skills and learn new things about robotics. Mechanics The base is made of plywood... [Read more]

Hello everyone, I was inspired by another thread on the electrode related to the 232 interface for the gas installation. I made the interface presented here over 2 years ago, in the meantime, about a week, new versions were created. The final version was quite universal. It can be... [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... [Read more]

When the capacity of the USB stick attached to the tuner ceased to be enough for me, I connected an old 2.5 "disk. When it was too small, I connected a 3.5" HD disk. There is a power problem. The power supply and disk had to work all the time when I set to record my favorite program.... [Read more]

The inspiration for today's article was a colleague @kkknc who in the thread dedicated to gadgets that may appear in the Electrode shop , he proposed two interesting devices, and I quote: "Cheap and interesting. 1Hz-150KHz 3.3V-30V PWM Board Pulse Signal Generator Module PWM Frequency... [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... [Read more]

Hello everyone. Today I would like to present to you a project which, as it were, arose from the urgent need to defend against a neighbor, or rather against his onerous smoke from his chimney. Apart from the fact that my neighbor did not want to talk to me in any diplomatic way, he... [Read more]

The ATOMIC Pi is a Kickstarter-funded project for Team IoT's new single board computer. The heart of the computer is the Atom x5-Z8350 chip from Intel containing a quad-core x86-64 processor clocked at 1.92GHz and an HD graphics processor. The computer is running Kubuntu. The... [Read more]

At one time, and it will be thirty years with a cover, I glued together a resistor container from matchboxes. Since my wife promised to buy me a 3D printer, I sculpted such an organiser as part of my design education. I attach the files. If anyone wants to comment along the lines... [Read more]

The Arduino Mega (ATmega2560) + ESP8266 module on one board contains Arduino Mega and a WiFi module based on ESP8266 with a printed antenna and an external uFL antenna connector. The cost of the module on auction portals is ~ $ 12 Link . The module can be powered from a micro USB... [Read more]

Introduction Tutorials that help in developing software for microcontrollers focus mainly on the use of peripherals of the microcontroller itself, which is understandable, but unfortunately they rarely focus on the part of the program that executes before the main function. The following... [Read more]

Today I will present you a very interesting microscope equipped with its own LCD screen (because it does not look like OLED or even IPS). I got the device for testing from one of our forum colleagues - @Bestler Thank you very much, and sorry for "messing" ... But to the point. The... [Read more]

The laser SDS011 sensor from Nova Fitness is available on auction portals for ~ $ 20 SDS011 . The device has an air inlet and an air suction turbine. 5V power supply, UART communication interface works with 3.3V voltage level. Information about PM2.5 and PM10 dust measurements is... [Read more]

Arduino UNO + ESP8266 module on one board contains UNO based on ATmega328 and WiFi module based on ESP8266. The cost of the module on auction portals is ~ $ 7 Link . The module can be powered from a micro USB socket or DC 7-12V connector. Communication with the modules takes place... [Read more]

Piri made it available to us for testing remote controlled socket WiFi 2.4GHz to measure the power consumed by the connected device. In the video you will find the results of the socket tests, we will also take a look inside the housing. The control of switching on the connected device... [Read more]

Today I would like to present a brief comparison of the two NEO-6M GPS modules. The difference between these modules is the use of a different PCB and a different antenna. The described modules in the pictures below. Older version on the left, newer on the right. I described the first... [Read more]

Piri made it available to us for testing 2.4GHz wireless WiFi camera reolink argus 2 . The term "wireless" is of key importance here, because the camera, apart from WiFi connectivity, is powered by a battery (5200mAh 3.6V) and can draw energy from a photovoltaic panel. In the video... [Read more]

Today I want to present an interesting (in my opinion) artificial load working in CC mode, in which a test of fast charging modes can be forced from the menu. What is useful for testing chargers and powerbanks with this option. The heart of the device is the MOSFET IRFZ44N. Looking... [Read more]

Hello! During the renovation of the living room, I came up with the idea to hide the projector and screen for the projector in the suspended ceiling (or more precisely in the decorative band under the LED lighting). One button activating the projector was supposed to turn a seemingly... [Read more]