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Homemade unusual electronic ones. Useful and simple electronic devices and DIY projects. Useful DIY items for fishing

One of the common hobbies of amateurs and professionals in the field of electronics is the design and manufacture of various homemade products for the home. Electronic homemade products do not require large material and financial costs and can be done at home, since work with electronics is, for the most part, “clean”. The only exception is the manufacture of various body parts and other mechanical components.

Useful electronic homemade products can be used in all areas of everyday life, from the kitchen to the garage, where many are engaged in improving and repairing car electronic devices.

Homemade products in the kitchen

Kitchen electronics crafts can be a complement to existing accessories and fixtures. Industrial and homemade electric kebab makers are very popular among apartment residents.

Another common example of kitchen homemade products made by a home electrician is timers and automatic switching on of lights above work surfaces, and electric ignition of gas burners.

Important! Changing the design of some household appliances, especially gas appliances, can cause “misunderstanding and rejection” by regulatory organizations. In addition, it requires great care and attention.

Electronics in the car

Homemade devices for cars are most widely used among owners of domestic brands of vehicles, which are distinguished by a minimal number of additional functions. The following schemes are in wide demand:

Sound indicators for turns and handbrake;
Battery and generator operating mode indicator.

More experienced radio amateurs are equipping their cars with parking sensors, electronic window drives, and automatic light sensors to control low beam headlights.

Homemade crafts for beginners

Most novice radio amateurs are engaged in the manufacture of structures that do not require high qualifications. Simple proven designs can serve for a long time and not only for the sake of benefit, but also as a reminder of the technical “growing up” from a beginner radio amateur to a professional.

For inexperienced hobbyists, many manufacturers produce ready-made construction kits that contain a printed circuit board and a set of elements. Such sets allow you to practice the following skills:

Reading schematic and wiring diagrams;
Correct soldering;
Setup and adjustment using a ready-made method.

Very common among sets Digital Watch various options execution and degree of complexity.

As an area of application of knowledge and experience, radio amateurs can design electronic toys using simpler circuits or modifying industrial designs to suit their wishes and capabilities.

Interesting ideas for crafts can be seen in the examples of making radio-electronic crafts from worn-out computer parts.

Home workshop

To independently design radio-electronic devices, you need a certain minimum of tools, devices and measuring instruments :

Soldering iron;
Side cutters;
Tweezers;
Screwdriver Set;
Pliers;
Multifunctional tester (avometer).

On a note. When planning to do electronics yourself, you should not immediately take on complex designs and purchase an expensive tool.

Most radio amateurs began their journey by using a simple 220V 25-40W soldering iron, and the most popular Soviet tester, the Ts-20, was used in the home laboratory. All this is enough for practicing with electricity, acquiring the necessary skills and experience.

There is no point in buying an expensive soldering station for a novice radio amateur if he does not have the necessary experience with a conventional soldering iron. Moreover, the possibility of using the station will not appear soon, but only after sometimes quite a long time.

There is also no need for professional measuring equipment. The only serious device that even a novice amateur may need is an oscilloscope. For those who already understand electronics, an oscilloscope is one of the most sought-after measurement tools.

Inexpensive digital devices made in China can be successfully used as an avometer. Having rich functionality, they have high measurement accuracy, ease of use and, importantly, have a built-in module for measuring transistor parameters.

When talking about a DIY home workshop, one cannot fail to mention the materials used for soldering. This is solder and flux. The most common solder is POS-60 alloy, which has a low melting point and provides high soldering reliability. Most solders used for soldering all kinds of devices are analogues of the mentioned alloy and can be successfully replaced with it.

Ordinary rosin is used as a flux for soldering, but for ease of use it is better to use its solution in ethyl alcohol. Rosin-based fluxes do not require removal from installation after operation, since they are chemically neutral under most operating conditions, and the thin film of rosin formed after evaporation of the solvent (alcohol) exhibits good protective properties.

Important! When soldering electronic components Under no circumstances should active fluxes be used. This is especially true for soldering acid (zinc chloride solution), since even under normal conditions such flux has a destructive effect on thin copper printed conductors.

To service heavily oxidized terminals, it is better to use active acid-free flux LTI-120, which does not require rinsing.

It is very convenient to work using solder that contains flux. The solder is made in the form of a thin tube, inside of which there is rosin.

For mounting elements, breadboards made of double-sided foil fiberglass, which are produced in a wide range, are well suited.

Security measures

Working with electricity is associated with risks to health and even life, especially if the electronics are designed with your own hands with mains power. Homemade electrical devices should not use transformerless power from a household network alternating current. As a last resort, such devices should be configured by connecting them to the network through an isolation transformer with a transformation ratio equal to one. The voltage at its output will correspond to the network voltage, but at the same time, reliable galvanic isolation will be ensured.

Making electronic homemade products with your own hands gained popularity back in the last century, when semiconductor devices. With their help, it was quite easy to assemble devices needed for everyday life from old equipment. Today, repair and assembly of equipment for the home or cottage, for a car or garage can also be solved at home.

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Homemade devices for home and garden

Electrical homemade products for home and garden that use the power of electricity can be made by every electrician. Most devices are created using factory components and require only school knowledge of electricity.

Electric kebab maker

The electric kebab maker can be either horizontal or vertical. Stores usually sell vertical ones, and they do their job well after some modification.

To create a horizontal barbecue grill you will need a heating element and a frame resembling a barbecue. The heating element can be made from a ceramic tube and a nichrome spiral wound around it. The tube is secured through an insulating material in a metal casing. Drawings will be required to assemble the case.

Barbecue grill

An equally interesting idea is a kebab grill with an electric drive for rotating skewers. By adding an electric motor to a regular grill, you can get an excellent device that will cook barbecue in offline mode. To organize the skewer drive, you can use a motor from the wipers, from washing machine or any other 12 Volt. Using a system of pulleys and a belt or gear drive, the rotation of the shaft is transmitted to the skewers, and the meat is slowly turned over the coals.

Homemade WI-FI antenna

This antenna will improve the reception quality and Wi-Fi speed in your home. According to reviews, after connecting it, the signal level rises from 5 to 27 Mbit.

For production you need:

a small metal sieve or colander;
Wi-Fi adapter (USB);
USB cable;
drill;
epoxy resin;
camera tripod;
plastic clamps.

Manufacturing process:

We drill a small hole (14 mm) in the center of the sieve and insert a metal pin into it to secure the adapter.
We insert the connector from the USB cable into the prepared hole and secure it with epoxy resin. The USB connector after gluing must be strictly perpendicular to the plane of the sieve, then the device will work more efficiently.
Then, using two zip ties, “ears” are made through which the cable is attached.
We fix the product on a camera tripod. We drill a hole with a diameter of 12 mm in the antenna and tighten it with a nut.

Necessary materials Insert the pin into the drilled hole Glue the USB cable Securing the cable Tripod Installing the antenna using a tripod

Electrical homemade products for the garage

Let's look at several useful DIY projects for the garage.

Homemade chandelier

If you have poor lighting in your garage, then a makeshift chandelier will be very useful. To make a bifurcating chuck, you will need a pair of angular chucks, which are sold at a regular hardware store.

Sequencing:

We remove the wires from the sockets and fasten them with a plastic tie. We get a socket for two lamps. All that remains is to connect them to the electrical network.
To do this we use the base from fluorescent lamp. Carefully break out the lamp, then solder the wires from our design to the contacts of the base.
We insulate them well and attach the base on top of the cartridges.

The use of ordinary light bulbs in this design is undesirable - the sockets may melt from heating.

LED device

Another lighting option could be a homemade LED lighting device.

To make it you will need:

old fluorescent lamp;
LED Strip Light;
connecting wires.

The manufacturing sequence is as follows:

An LED strip is glued to the lamp body in one or several rows.
The connecting wires are connected and brought to the lamp switch.
The assembled device is tested.

Spot welding machine

A necessary device in the garage will be a homemade spot welding machine, the basis of which is a transformer from an old microwave oven.

A necessary condition is that the transformer must be working in order not to rewind all the windings.

The process of assembling the welder is quite simple:
The transformer is dismantled.
Carefully remove the secondary winding.
Two shunts are removed.
A secondary winding of two or three turns is made of thick wire (with a diameter of at least 10 mm).

Electrodes for resistance welding are made from a copper rod with a diameter larger than the wires.

Homemade spot welding tool

Useful DIY items for fishing

Among the homemade products you can find many interesting ideas for use in camping conditions, as well as hunting and fishing.

Electronic alarm

An example would be an electronic signaling device for fishing with a regular fishing rod or other equipment. A simple biting device can be assembled in just half an hour. For it you will need an old beeper keychain and a strip of plastic 1-2 mm thick.

The keychain is attached to the rod.
A strip of plastic is glued to the fishing line and inserted between the contacts of the key fob.

Now when the fish bites, the fish will pull the line, the plastic will fly out, the contacts will close and the key fob will work.

Underwater camera for ice fishing

Using a homemade underwater camera for winter fishing, you can see if there is fish under the hole. And this simplifies the fishing process.

To make it you will need:

small camera;
sealed camera box;
small TV;
car battery to power the camera;
extension;
inverter;
lead for cargo;
ultraviolet diodes for illumination during underwater shooting;
superglue, electrical tape, sealant.

Build process:

Two holes are made in the upper part of the box. An extension cable is inserted through one. Through the second is the wire that connects the camera to the TV.
Several more holes are made in the box into which light bulbs are inserted for illumination. The wires from the light bulbs are soldered into one circuit (for example, with a parallel arrangement), which is connected to a cable that provides power.
The holes are sealed with glue and tape for a tight seal.
Lead is melted and small elongated bars are poured out of it. They are placed at the bottom of the box.
Set up the camera and connect it to the cable. After which it is carefully placed in the box so that it has a clear forward and horizontal direction and transmits high quality image. For stability, the chamber is surrounded by soft material.
A torso (rope, belt) is attached to the box, which will be used to lower the camera to depth. For convenience, you can combine it, the power cable and the communication wire between the video camera and the TV into one core, secured with electrical tape.
Connect the power cable of the video camera to the battery and test the device.

Homemade fish bait

You can make a good bait for fishing yourself. This will be a device assembled based on a simple multivibrator.

You will need:

sound emitter, for example, from a children's toy;
wires;
a small plastic jar, for example, for medicinal tablets;
electronic board;
regulator with plastic rod;
a piece of foam;
batteries;
weights for the float;
volume control.

The bait is assembled as follows:

You need to solder the circuit and check it.
Two wires are soldered to the sound emitter. Then they are carried inside the case and connected to the board.
A regulator with a plastic rod is placed in the lid of the jar.
A dense circle cut out of foam plastic is installed on top of the board, which separates the board from the battery.
Weights are attached to the bottom of the jar so that the container floats on the water like a float.
The regulator sets the frequency and changes the sound.

Bait scheme - 1 Bait scheme - 2

Electronic homemade products for cars

Car enthusiasts create homemade products with their own hands to improve appearance and ease of use of the car.

Electrical auto tester

A simple homemade electrical probe is perfect for a car. It can show the presence of 12 volts in an electrical circuit. It is used to check the serviceability of relays, as well as light bulbs and other equipment. You can make such a device from a syringe and LEDs.

Assembly diagram:

Two LEDs are soldered with opposite terminals (plus one to the minus of the other and vice versa).
A steel probe is connected to one of the solders through a resistance of 300 Ohms. To the other solder there is a contact for batteries.
The design is inserted into the syringe so that the probe comes out of the hole for the needles. Most of the probe is insulated with a PVC pipe.
4 LR44 batteries are inserted into the syringe so that one of the poles is connected to the LED contact.
The other pole of the batteries is connected to a flexible wire with an alligator clip.

The video explains how to make a syringe tester. Filmed by ILYANOV channel.

Light switch

The scheme for smoothly turning off the lights in the car interior is quite simple to make. Such electronics are suitable for any car. A small board consisting of a capacitor and diodes is soldered parallel to the interior lamp terminals. The drop in electricity voltage will occur gradually and create the effect of a gradually fading light.

Car subwoofer

To make a car subwoofer with your own hands, you must first purchase a speaker. You need to start from its dimensions when calculating the size of the case.

The simplest and most suitable form of a subwoofer for the trunk is a truncated pyramid with a slope similar to that of the rear seats.

LED fog lights

You can make LED car fog lights with your own hands.

For creativity you will need:

two ten-watt LEDs;
2 lenses from an old projector;
gaskets from plastic pipes;
LM317T microcircuits;
resistors.

Instructions for assembling the craft:

LEDs are installed on pre-prepared aluminum radiators.
The structure is assembled from headlight housings, lenses from projectors, gaskets and diodes on radiators.
The fog lights are powered through current stabilizers on LM317T microcircuits and resistors.

Car carrying

A very convenient car carrier is made from a computer USB lamp. It is compact and you can connect the device to any place in the car wiring.

Manufacturing scheme:

Remove the contacts from the USB plug.
In the plug body we connect the wires of the lamp and the car alligator clips.
To mount it in the right place (even horizontally), a magnet is placed on the plug.

Every day there are more and more, many new articles appear, it is quite difficult for new visitors to immediately find their bearings and review at once everything that has already been written and previously posted.

I would really like to draw the attention of all visitors to individual articles that were posted on the site earlier. So that you don’t have to search for a long time necessary information I will make several “entrance pages” with links to the most interesting and useful articles on individual topics.

Let's call the first such page "Useful electronic homemade products." Here we consider simple electronic circuits, which are available for implementation to people of any level of training. The circuits are built using a modern electronic base.

All information in the articles is presented in a very accessible form and to the extent necessary for practical work. Naturally, to implement such schemes you need to understand at least the basics of electronics.

So, a selection of the most interesting articles on the site on the topic "Useful electronic homemade products". The author of the articles is Boris Aladyshkin.

Modern electronics components greatly simplify circuit design. Even a regular twilight switch can now be assembled from just three parts.

The article describes a simple and reliable electric pump control circuit. Despite the extreme simplicity of the circuit, the device can operate in two modes: water lifting and drainage.

The article provides several diagrams of spot welding machines.

Using the described design, you can determine whether a mechanism located in another room or building is working or not. Information about the operation is the vibration of the mechanism itself.

A story about what a safety transformer is, why it is needed and how you can make it yourself.

Description of a simple device that turns off the load in case of output mains voltage beyond acceptable limits.

The article discusses the circuit of a simple thermostat using an adjustable zener diode TL431.

An article about how to make a device for smoothly switching on lamps using the KR1182PM1 microcircuit.

Sometimes, when the voltage in the network is low or when soldering massive parts, it becomes simply impossible to use a soldering iron. This is where a boost power regulator for a soldering iron can come to the rescue.

An article about how you can replace a mechanical thermostat for an oil heating radiator.

Description of a simple and reliable thermostat circuit for a heating system.

The article provides a description of the converter circuit, made on a modern element base, containing minimal amount parts and allows you to obtain significant power in the load.

Article about in various ways connecting the load to the control unit on microcircuits using relays and thyristors.

Description of a simple control circuit for LED garlands.

Design simple timer, allowing you to turn the load on and off at specified time intervals. Working time and pause time do not depend on each other.

Description of the circuit and operating principle of a simple emergency lamp based on an energy-saving lamp.

A detailed story about the popular "laser-iron" manufacturing technology printed circuit boards, its features and nuances.

So. Life has turned out in such a way that I have a house in the village with gas heating. It is not possible to live there permanently. The house is used as a summer house. For a couple of winters I stupidly left the boiler on with the minimum coolant temperature.
But there are two disadvantages.
1. Gas bills are astronomical.
2. If there is a need to come to the house in the middle of winter, the temperature in the house is around 12 degrees.
Therefore, it was necessary to invent something.
I'll clarify right away. Availability of point WI-FI access Mandatory in the relay coverage area. But, I think, if you get confused, you can put a connected mobile phone next to the sensor and give out a signal from the phone.

Connecting a 4-pin motion sensor with your own hands (diagram)

DIY motion sensor connection diagram

It happens that you need to install lighting in your dacha or in your home. will be triggered by movement or a person or someone else.

A motion sensor, which I ordered from Aliexpress, works well with this function. The link to which will be below. By connecting light through a motion sensor, when a person passes through his field of vision, the light turns on and stays on for 1 minute. and turns off again.

In this article I’ll tell you how to connect such a sensor if it doesn’t have 3 contacts, but 4 like this one.

DIY power supply from an energy-saving light bulb

When to get 12 Volt for LED strip , or for some other purpose, there is an option to make such a power supply with your own hands.

DIY fan speed controller

This regulator allows for smooth adjustment variable resistor fan speed.

The circuit of the floor fan speed controller turned out to be the simplest. To fit into the case from the old charger Nokia phone. The terminals from a regular electrical outlet also fit in there.

The installation is quite tight, but this was due to the size of the case..

DIY plant lighting

There may be a problem with lack of lighting plants, flowers or seedlings, and there is a need for artificial light for them, and this is the kind of light we can provide on LEDs with your own hands.

DIY brightness control

It all started after I installed halogen lamps for lighting at home. When turned on, they often burned out. Sometimes even 1 light bulb a day. Therefore, I decided to make a smooth switching on of the lighting based on a brightness control with my own hands, and I am attaching a diagram of the brightness control.

DIY refrigerator thermostat

It all started when I returned from work and opened the refrigerator to find it warm. Turning the thermostat control did not help - the cold did not appear. Therefore, I decided not to buy a new unit, which is also rare, but to make an electronic thermostat myself using the ATtiny85. The difference with the original thermostat is that the temperature sensor is on the shelf and not hidden in the wall. In addition, 2 LEDs appeared - they signal that the unit is turned on or the temperature is above the upper threshold.

DIY soil moisture sensor

This device can be used for automatic watering in greenhouses, flower greenhouses, flower beds and indoor plants. Below is a diagram on which you can make a simple sensor (detector) of soil moisture (or dryness) with your own hands. When the soil dries out, voltage is applied with a current of up to 90 mA, which is quite enough, turn on the relay.

Also suitable for automatic switching on drip irrigation to avoid excess moisture.

Fluorescent lamp power supply circuit

Power supply circuit for a fluorescent lamp.

Often when it fails energy saving lamps, in It burns out the power circuit, not the lamp itself. As is known, LDS with burnt filaments, it is necessary to supply the network with rectified current using a starterless starting device. In this case, the filaments of the lamp are shunted with a jumper and to which the high voltage to turn on the lamp. There is an instantaneous cold ignition of the lamp, with a sharp increase in voltage across it, upon start-up without preheating the electrodes. In this article we will look at starting an LDS lamp with your own hands.

USB keyboard for tablet

Somehow, suddenly, I took something and decided to buy it for my PC new keyboard. The desire for novelty is irresistible. Changed the background color from white to black, and the letter color from red-black to white. After a week, the desire for novelty naturally disappeared like water into sand ( old friend better than the new two) and the new thing was sent to the closet for storage - until better times. And now they came for her, she didn’t even imagine that it would happen so quickly. And therefore the name would be even better suited not which is, but how to connect usb keyboard to the tablet.

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