Articles

Ground loop - what is it and what effects can it have on the operation of systems? In the previous episode, you will find information about galvanic separation . Before about the ground loop, it would first be worth explaining what ground is. In electronic systems, it is a node (that... [Read more]

Inspired by subsequent articles by my colleague tomybb, who presents us and successively shares his opinions about the tools he has, I decided to share with you my observations about precision screwdrivers of all types and various shapes. All in all, I was looking for the perfect... [Read more]

One day I was faced with the fact that I had to change my desktop computer to a laptop. The laptop is chosen, but the dilemma of what to do with the data that is on the HDD drives and there is over 4TB of them. The idea of a fast NAS server, but their price knocked me off my feet.... [Read more]

Hello my dears I'd like to share here share an idea for a practical 3D print for the home and kitchen that has already appealed to several people and allowed us to get our cupboards in order. The idea is a simple organiser/handle/hanger for pot lids. I designed the whole thing from... [Read more]

I decided to share a problem that I encountered when I became the owner of the Behringer UMC202HD rev.1.12 card, and describe the way I solved it. Maybe some of you will need it. First things first. Back in the day, looking for a card / interface for audio measurement, and on a budget,... [Read more]

Howdy! I present to you another 3D printer project that I made at home at little cost, as I had most of the components at home. This time the CoreXY My first printer: Link By using printed components, the cost of the printer is definitely reduced. The example I have built now is still... [Read more]

DUAL / QUAD SATA HAT is an extension for building a NAS server based on Raspberry Pi 4 (and other compatible single-board computers, including Rock Pi 4) from Radxa. The DUAL / QUAD SATA HAT is based on the JMicron USB-SATA - JMS561 bridge. The manufacturer DUAL / QUAD SATA HAT has... [Read more]

Hello my dears Here I will describe my experience with the printer Creality3D Ender 3 Pro . In the topic I will try to include useful and interesting information for anyone considering buying one or starting out with a 3D printer. In the topic I will not describe the obvious such... [Read more]

Here I will describe step by step installation, configuration and use free compiler SDCC for creating programs for PIC microprocessors. The whole thing will be in the form of a detailed tutorial. Due to the length of the whole tutorial, I will divide it into separate topics . In later... [Read more]

Whether you are a professional electronics designer or just your hobby, you know for sure that device testing, even at the design stage, is a must. This saves time and money by avoiding design errors before the PCB is physically fabricated and the often very expensive electronic components... [Read more]

Have you ever used the term UART only to be corrected by another engineer that it is not a UART but a USART? In some cases the two terms are interchangeable, but in many others it is incorrect to use them interchangeably. Let's take a look at what exactly USART and UART are, and... [Read more]

Recently, while browsing the archive with my old projects, I found a project that for ~ 20 years did not get a decent plate. It was designed, but I didn't really feel like it or had the skills (2 layers) to make it. As the project was quite interesting, I decided to dig it out.... [Read more]

Just because you can connect the two wires together doesn't mean you should ... but if you must, the article below will show you how. Of course, the easiest way to connect two conductors is to twist them together. If we know how to do this, the connection can be rugged and mechanically... [Read more]

I see that recently on Elektroda it is fashionable to make your own projects and 3D prints, so I will also share my construction - especially as it is practical and works well in my workshop. It is a box-organiser for 50 strips of resistors, capacitors or other SMD 0805 elements.... [Read more]

Converting a logic circuit made with AND and OR gates to a form composed of NAND and NOR gates is an excellent exercise that will help you understand the basic laws of Boola logic. The article below is divided into three sections. It is based on the homework of a student who asked... [Read more]

Hello my dears Today I will describe one of my first projects completed with the help of a 3D printer ( Ender Creality Pro 3 ). This is the attachment piece for the roller shutter Gardinia , according to my own design. This roller blind as I found it is designed to be fixed "on the... [Read more]

Hello my dears Today I'm going to describe here my screwdriver organiser/stand/segregator that mounts on the wall. I designed the whole thing first in the 3D modelling program Blender, and then printed it on a 3D Creality Ender Pro 3 using PLA filament. Project ideas The idea of such... [Read more]

Hello my dears Today I will describe here my own segment with drawers for storing small parts. I designed the whole thing first in the 3D modelling program Blender and then printed it on a 3D Creality Ender Pro 3 using PLA printer . Design considerations I made the following assumptions... [Read more]

Hello my dears. Today I will present to you my network relay driver/timer/thermometer realised in a housing from a Ferguson AF 2818 SE satellite receiver based on my runner board under PIC18F67J60. Project idea I've been experimenting with internet control for quite some time and... [Read more]

Arduino NANO 33 IoT is a new version of the NANO module with 3.3V logic levels (note the extension modules with 5V I/O), ARM microcontroller SAMD21G18A , WiFi and Bluetooth connectivity NINA W102 , and 6-axis IMU LSM6DS3 . The PCB has a secure key storage ATECC608A used in secure... [Read more]

New Arduino board NANO Every uses a microcontroller ATMega4809 AVR, compared to the previous version nano where it was used ATmega328 . On the Every version PCB you won't find a quartz resonator, due to the clock signal generator built into the microcontroller up to 20MHz. We get... [Read more]

I received the pre-ordered (and therefore much cheaper) MUSTOOL MDS8207 multimeter with oscilloscope function. As of today, its price is quite high, PLN 385.49, but I paid PLN 286.41. The equipment came in a cardboard box packed in a bag with the Banggood logo. The box was heavily... [Read more]

Here you will find a practical comparison of the characteristics of online (VFI) and offline - line interactive (AVR) UPSs. Devices Micropower 1000VA and RTII 1000VA provided by the manufacturer Green Cell . We will not cover the basics of UPS here, but will focus on practical trials... [Read more]

1. Magnetic field in matter The magnetic field in a vacuum depends only on the electrical circuits that generate it. In material environments, there is also the influence of molecular currents in particles of matter. An electron moving around the nucleus at the angular velocity omega_zero... [Read more]

We recently presented active cooling system dedicated to smartphones ; it is not the only device that currently needs active cooling with increased computational effort. Another one is the Raspberry Pi 4 single-board computer. While the earlier, third version, was known for overheating... [Read more]

Graphical multimeter MUSTOOL MT8206 Taking advantage of the promotion, I bought such a meter on the Banggood.com portal for less than 38 EUR (160 PLN). I will briefly try to describe here why (not) it is worth buying it. The parcel arrived very quickly (13 days), it was sent by Dutch... [Read more]

Hello. I present a next plate for Retrocomputing. The emulator has: - FPGA Spartan6 XC6SLX9 - 8MB 16bit SDRAM memory - 16MB flash for core and ROMs - HDMI output - analog audio output + tape recorder input - SD slot - RS232 - 2 * joystick port - 2 * PS / 2 - A500 keyboard connector... [Read more]

Hello my dears Here I will describe my experience with running an LED driver MAX7219 and a library to support it, which I developed for PIC microcontrollers. In short MAX7219 is a cube that allows you to control a very large number of LEDs using only a few microcontroller pins. What... [Read more]

Hello, I would like to boast of a very simple but interesting device from the category: what to do with an old microwave ;) I decided to diversify my apartment a bit with a new table, it fell on an oak table with a lightning pattern, so I was forced to develop a tool for this. The... [Read more]

Assumption Half bridge LC resonant with parallel load to C topology. I don't know why but we can find information about it as "parallel resonant converter" that I think is not a true (where is parallel resonant here?) Supply voltage = 230 AC ≈ 325DC lowest frequncy = 100kHz... [Read more]