Articles

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]

IN Elektroda.pl gadgets a communication module will appear soon Wi-Fi and Bluetooth based on ESP32 . Compared to previously available modules ESP8266 The ESP32 has two 32b cores, one dedicated to supporting wireless communication. The comparison of ESP8266 with ESP32 shows new functionalities... [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... [Read more]

Welcome, I would like to introduce you to a simple and easy project that anyone can quickly build. For this purpose, I used Raspberry Pi 3 model B with built-in WiFi. This is home monitoring that can be turned on when leaving the apartment. When the alarm is armed (60 seconds after... [Read more]

I tried very hard ... renovation, finishing, tiredness ... hit me too. The cable is cut solidly, in such a stupid place that I am ashamed to admit that I marked the place for a new box myself. Let's do it for fatigue and that's the end of the topic. I decided to document the... [Read more]

The microprocessor-based electronic component tester will appear in July 2017 in gadgets electroda.pl . The tester automatically detects the type and pinout of the connected component, and displays the measured parameters of the part under test. The tester is powered by a 9V battery... [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... [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... [Read more]

Arduino and Raspberry Pi are the most popular prototype platforms among students, hobbyists and professionals. Experienced electronic engineers know both PCBs and the differences between them, however newbies are often confused and ask questions like: o which platform to choose for... [Read more]

Chronocomparator - vibroscope. It is a device that helps to set the correct gait of clocks and mechanical watches. It allows you to check whether the watch is working correctly both in the face down, up or on the side. Is the gait stability maintained over a longer period of time,... [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... [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... [Read more]