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Hello, The construction that I want to describe here is a modification of the existing solution, and the topic serves to convey the idea and provoke discussion about this solution. I have a CNC milling machine of my own design, in which the drive is transmitted using trapezoidal screws... [Read more]
I was wondering if this design fits in this forum, but I can see that they were already similar, so it will be a bit of a change in this section. Often I was faced with the problem of rolling a shaft (bushings, washers), and anyone who made extra money using the method: a drill mounted... [Read more]
In the 1970s, Ohm's law was so easily explained. Do you know similar pictures? Source: [Read more]
Here I present to you one of the most popular modules used to power a unipolar stepper motor. The module and the stepper motor can be purchased from China for less than $1.50 including shipping, and are also available on Allegro and other auction sites. The dimensions of the board... [Read more]
Simple TCPIP / RS485 converter. The device allows you to create a remote port rs232 / rs485 in linux and windows systems and allows communication with devices via lan / internet. The project is based on UARTtransparentbridge code, but MAX485 support has been added to it. ESP8266 programmed... [Read more]
Hello all. I would like to introduce you to a cheap Chinese MP3 player - DFPlayer Mini. The cost of such a player is less than $ 1.5. DFPlayer mini has the ability to play music in MP3 or WAV format from the built-in micro SD card reader, you can also play music by connecting a USB... [Read more]
Good morning, Today's presentation concerns my final version of an amateur oscilloscope and a generator based on an external USB sound card. Seemingly nothing special as for today's times, but the device is easy to install, inexpensive, and most importantly useful. Device... [Read more]
FIBARO, the manufacturer of a wireless building automation system, invites you to participate in practical training courses for installers, electricians, building practitioners. Participants receive certificate of completion of the training. FIBARO is expanding its network of professional... [Read more]
Hello I present the weather station on which I have been working for some time. The beginning of work is also my beginning of fun with Arduino. It started with a ready-made project of a tiny station with an OLED display. Back then, just uploading the program to ESP8266 was a feat... [Read more]
There are many factors that contribute to the proper functioning of the gears in a power tool. Grease. Type. How to replace. All of these factors are the problems that users encounter with gears. What is the correct gear? What exactly is a gear wheel. The drive, i.e. movement, is... [Read more]
The popularity of the Raspberry Pi is growing thanks to the many examples available and the development driven by the community interested in minicomputer platforms. In addition to RPi, it is worth taking an interest in alternative minicomputers, perhaps they will be better suited... [Read more]
It's worth watching gadgets elektroda.pl because once in a while there will be a LoLin module based on ESP8266. The module can be programmed with the use of Arduino, LUA, MicroPython, the module provides WiFi 802.11b / g / n connectivity, is equipped with a USB UART CH340 converter... [Read more]
LED and led backlight tester. Inspired by this topic on the forum of Russian colleagues: I decided to build a similar device. The topic is interesting for all 6 pages, although it still describes one solution in various implementation variants. My design assumptions were similar,... [Read more]
Hello all! I would like to present a project aimed at practical implementation of the strobe lamp arrangement. Such a lamp is necessary for setting the ignition offset angle in internal combustion engines. I made the device a few years ago and so far it has served me flawlessly. Principle... [Read more]
As part of the ongoing competition contest at elektroda.pl there is a chance to get an Arduino Uno module, the module is equipped with an ATMega328P microcontroller clocked with a 16MHz quartz resonator, 5V power supply. There is a USB-B socket on the board that allows for power supply... [Read more]
The NE5532 is a popular operational amplifier used, among others, in audio systems, as a preamplifier, mixer or generator. This popular chip is often counterfeited, which can make a big difference in signal processing in your audio equipment. In particular, if someone is an audiophile... [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... [Read more]
The Arduino nano module equipped with a microcontroller will soon appear on elektroda.pl ATMega328P clocked with a 16MHz quartz resonator, power supply with 5V from the USB port. The board is equipped with a USB UART converter, which facilitates placing the program from the Arduino... [Read more]
10 jokes only an engineer can understand Who said engineers don't have a sense of humor? 1. Ordinary people think that if something is working properly you don't have to touch it. Engineers believe that if something works correctly, it means that there is still some work to... [Read more]
Hello I wanted to present a modification of the design of the Internet radio player built only using the ESP-01 module, RC filter and a few external components. Hardware: The schematic and pcb were prepared in the Eagle program version 7.7.0. The mp3 stream decoding is handled by... [Read more]
Hello. Before buying, it is worth checking what version we are dealing with. The point is whether the version is original or not. If we have non-original versions, after the update you will see the message: This board is Fake! This applies to the version with the serial number shown... [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... [Read more]
In the topic about the component tester LCR M328 Information about the possibility of changing the microcontroller firmware has appeared. I decided to check it in practice, despite the risk of breaking the device. Since the last tests, I have secured the LCD against falling out with... [Read more]
Module WEMOS D1 mini Pro based on ESP8266EX . A detailed description of how to integrate the module with Arduino environment can be found in the materials describing the modules previously made available: Amica and D1 mini. In addition to the configuration of the environment, you... [Read more]
In the material you will find an introduction to the Fourier transform with the theory kept to a minimum. It is a proposal to get acquainted with the topic through practical experiments, then an intuitive sense of what FFT can be useful for. If you are put off by complicated math,... [Read more]
Listening to music on large headphones connected directly to the sound card, I often lacked power in them. I decided to try to construct a fairly simple amplifier based on the Noise Reducer kit - Headamp 2016 on the TPA6120 chip. This is my first construction, which I managed to complete... [Read more]
Some time ago I successfully converted EPSON P50 into a printer that directly prints on the laminate. The effects were very satisfying for me, but the whole difficulty is to find an appropriate waterproof ink. I personally did not succeed in this, which is why I used the hybrid method... [Read more]
Commercially available reversing cameras nicely fitted into the license plate frame have in most cases auxiliary lines determining the distance when reversing. Some time ago I also bought a camera that I had in my car. The camera was connected to a multimedia radio. After selling... [Read more]
Some time ago I made myself a pure Class A headphone amplifier. I am not Audiofile, but in my opinion the structure works very nicely, the sound is dynamic and clear. Unfortunately, I don't have oscillograms, however the is no noise. Over time, the amplifier has developed a DAC that... [Read more]
Hello. Due to backyard earthworks and a lot of stone in the ground, the need to build a sifter arose. The inspiration came from youtube videos. The frame was made of angle bar 40. The screen proper was made of welded mesh (1x2m) with 12x12mm meshes made of 1mm wire. The mesh was fixed... [Read more]
