Articles

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]

Module D1 mini compatible with Wemos facilitates the use of a WiFi module ESP8266-12E incl. thanks to the built-in USB RS-232 converter and the output of signals to connectors with dimensions compatible with the contact plates. ESP8266-12E module complete with relay board appeared... [Read more]

Hello, I wanted to show off my new mini-tractor construction. There is no need to write about the tractor itself, the frame is made of U-profile, the engine is made of a toddler and 100 kg of recycled scrap. Initially, the bucket was supposed to be half a meter long, but after consulting... [Read more]

Already a few years ago I made an analog electronic tachometer (with a tip) and it works without problems in my motorcycle enduro which is Yamaha XT600, type 3TB, year 1995. I think that since the design has proven itself "in battle" it will be worth presenting it here. Why did I... [Read more]

I have the impression that every electronic engineer at some point in his life constructs a clock and some form of a meter. Time for me with the meter. The project is based on my previous toys using RS458 - - uses the same communication protocol as the rest of the toys, thanks to... [Read more]

What is a smart home? A smart home is actually a system of cooperating devices that care about the safety and comfort of household members, but also about energy savings, rational media management, etc. The whole thing is managed centrally on the basis of information collected from... [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... [Read more]

I present to you my latest creation - KrzysioCart MicroSD - a cartridge for the Pegasus console, which will be the last one you will buy - no other will be needed. The card supports 82% of all games released on the NES / Famicom / Pegasus console. The following mappers (chips that... [Read more]

Hello colleagues. For one projector I needed several ADC and DAC channels but unfortunately I didn't find any hat that would combine it, so I decided to make my own. I used AD5592 The first approach was like this: then soldered on the prototype board: In my makerspace some people... [Read more]

Hello. Today presents a device that I programmed a few days ago. It is used to automatically switch off the 230V receiver after arming the SATEL INTEGRA 128 alarm system. For the implementation of the project, I used a ready-made SONOFF S20 socket from ITEAD, purchased for ALLEGRO.... [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... [Read more]

I decided to write here on the forum about my exploits. Maybe someone would need such power. Note: I do not take responsibility if something happens to you, the reader, while playing with used power adapters that I am writing about here. A week ago I found a 600W power supply from... [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... [Read more]

Hello, I would like to share with you the design of the fog chamber and the experience that can be made through it. There are a few things here that are not related to electronics, but I hope you find it interesting. In case I throw here the functional block designs of the chamber:... [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... [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... [Read more]

Hello. I would like to present my xenon searchlight construction made of a poor quality halogen flashlight. The housing is provided by the CR2008S-1B flashlight, originally powered by a 6V 4Ah battery and a lit H3 6V 100W bulb, which instantly discharged the battery. The housing accommodates... [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... [Read more]

Smart Home wireless technology - a guide The hallmark of smart home systems being developed today is to expand their capabilities while simplifying how they are installed and configured. At the moment, the average smartphone user, able to set up Wi-Fi access, will be able to automate... [Read more]

1. Objective of the device I drive now with Mazda 6 from 2003. with a regular audio system (not Bose). Unfortunately, there is no possibility to connect an external source of Aux sound, eg a smartphone. I decided to make this an option, and to not have to tangle with the cables, everything... [Read more]