Articles

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]

The premise of the project was to create a programmer from scratch for popular Flash NAND memories, in order to fill a gap in the market in the low-budget segment of programmers. Sometimes there is a need to read a Flash NAND chip found, for example, in a memory stick, but also in... [Read more]

Some hard drives have a serial interface with pins next to the SATA connector. Basic information can be found in the topic: Seagate and Samsung HDD FAQ plus terminal - short description . Communication with the disk via the UART interface is usually used for failure diagnostics or... [Read more]

A long time ago in devices read-only data was stored in EPROMs. These types of memories were electrically programmed and erased with UV radiation. Erasing was possible thanks to a quartz window in the housing (there were also cheaper one-time programmable memories without a window... [Read more]

Hello to all forum members. Phew how hot. ;-) Today I would like to present you my holiday construction, it has little to do with electronics, but I think it is an interesting solution for summer heat. Let's start from the beginning. The project was inspired by the topic of heating... [Read more]

Hi, Over a year ago I made a multimedia system based on the Nexus 7 tablet. The goal was to create an interface that would provide many functions previously implemented by several devices. Assumptions: - Yanosik support on a large and clear screen and playing messages through the... [Read more]

The question of the 120V 60Hz AC power standard in the USA is a common cause of confusion. First of all, not only the USA uses 120V in its home electrical system. There are also differences in "higher" supply voltages depending on the country, there are standards of 200V, 220V, 230V,... [Read more]

One very good method of filtering high frequency interference and noise from the power line, especially when it is shared between multiple circuits - digital and analog - are ferrite beads. These are passive components that help to filter out some of the high-frequency noise for which... [Read more]

Hello After a long time, I finally gathered myself to collect all the photos and videos of my project in one place and publish it on the forum. The construction is about two years old. I did the job when I was in the 3rd class of technical secondary school in mechatronics profile.... [Read more]

Hello. Some time ago I was looking for a way to communicate with Logitech wireless peripherals in order to use them in my own projects. Due to the recent reports on the possibility of impersonating someone else's keyboard / mouse, I decided to boast myself. I don't know how... [Read more]

The author, while shopping with his girlfriend, had quite a lot of time to think and look around. As he wandered from store to store, a mirror displaying inscriptions caught his attention. It was then that he had the idea to build a similar one, but better for himself. Your own magic... [Read more]

Lead-acid batteries are still present in many devices, despite the availability of modern lithium polymer, lithium-ion or supercapacitors. The affordable price of lead-acid batteries and the simple design of the charger make them a popular source of energy for both buffer and cyclic... [Read more]