Every owner passenger car tries to improve his car to the best of his ability. Moreover, the older the car, the more the desire to make a supercar out of it, equipped with the most recent advances science and technology, stronger.
Everything is good, but in moderation. You understand this when you see a penny of not the first freshness, hung with flashing lights, chippers and sophisticated security systems. We will not offer to equip Tavria on-board computer or sculpt automatic system stability control by nine.
Homemade electronics in the car
We will imagine what you can do useful for your car if we know a little about electronics and know how to hold a soldering iron. Useful electronics for a car with your own hands installed and tested on yourself can be useful not only for us, therefore we offer a small digest of simple devices that simplify the life of a motorist.
Down with the catalyst
When removing the catalyst with your own hands, you may encounter some difficulties. On some car models, it is not possible to remove the primary catalytic converter, or you do not want to flash the ECU. In this case, there is a simple device that will mislead the cunning ECU so that when the catalyst is removed, the warning lamp for a malfunction in the engine management system will not light up.
This simplest device is adjusted to the nominal indicators of catalysts on all Mitsubishi, Chevrolet Lacetti, Nissan Premiere. For other cars, you just need to select the desired rating of radio components from the oscillogram. There is nothing difficult in this - there are a bunch of reference books.
Here circuit diagram device and its appearance.
Parts ratings:
- resistor 150 kOhm;
- capacitor 1 μF.
After soldering the entire structure, we process it with insulating varnish and enclose it in a thermocambric. The control lamp will no longer remind of itself.
A very useful and simple device. To make it, we only need an old piezo lighter. When a candle is punched onto the body, a spark on the contacts appears periodically, and this manifests itself in unstable work motor. There are special devices for checking the spark plug, but they are not in the arsenal, then there is always a replacement.
We take out the piezoelectric element from the lighter, lengthen the wires and insulate so that it does not tickle with current. Install the device on the candle as shown in the figure, press the button and take a close look at the contacts. If the spark has slipped, it means that the candle is 100% working.
The simplest charger
Surely every motorist with experience has come across a situation when you need to recharge the battery, but there was no charger at hand. Such Charger, the scheme of which we offer, you can easily carry with you in the trunk. It can be useful on long trips, where there is no access to a full-fledged charger. The main thing is to have an outlet.
Its scheme is extremely simple. It is made on a transformerless basis, so the device is compact and lightweight. The device does not heat up and can work as long as you like. It has one drawback - it has no galvanic isolation. That is, the current from the network goes directly to the battery through the capacitor unit.
To convert alternating current a rectifier - a diode bridge - serves as a constant. It is quite possible to find it ready-made, or you can assemble it yourself. The bridge must be designed for a voltage of at least 400 V with a current of at least 3 A. The capacitor unit in total must show a total capacitance of 8 μF.
In order for the circuit to discharge after shutdown, a 220-810 kΩ resistor is installed at the output. Instead of a set of capacitors, you can use one, but a capacious one - 10 μF. Battery clips can be attached to the output wires for ease of use. The circuit is very compact and will fit into any enclosure. This is not an ideal charger, but it can come in handy more than once as a life-saving extreme.
There is always work for a skilled soldering iron to create pleasant little things for comfort, for safety, for creating additional lighting. The main thing is to know that it is a necessity. And then any device or device will be a useful and pleasant addition to the vehicle design.
If you have a low-frequency speaker lying around somewhere, then it will not be bad for him to assemble a simple amplifier for a subwoofer on tda7377
Car radio from module with aliexpress
DIY lithium battery 12 Volts
Many people use the popular 12 V 7.2 Ah lead-acid battery in some devices. This battery can be found in many devices, from children's electric vehicles to UPSs, or systems to keep critical devices energized in the event of a power failure. Why is he so popular? Price is its main advantage and, probably, the only one.
connecting a voltmeter with aliexpress
A voltmeter with REM came to me by mail from China. The first thing I did was test it at home using a computer power supply. And by the way, I will say something else. some people wrote to me that REM does not work on them, and that the voltmeter works constantly, even when the GU is turned off. At first I thought so too.
Booster for starting a car with your own hands
As winter approaches frequent problem drivers, the fact that the battery may not always start the car, it is either hooked up, and the battery itself does not work very well in the cold.
A good solution would also be to create DIY booster.
If simple language, this is the same external battery (power bank) as for the phone, only this time for our car.
Charger for car battery from modules with Ali
With the onset of the cold season, more and more car enthusiasts have to face how to charge the battery for the car.
In this article, we do not need much, because we will collect DIY charger from modules from the well-known site-Aliexpress.
How to connect a consumer with a supply voltage of 12V to a 24V network
how to connect a consumer with a supply voltage of 12v to a 24v network
(voltage converter 24v-12v)
It is known that in some cars, the on-board network is not 12 volts, which is most common, but 24 Volts.
And here some difficulties arise, but how to connect the same radar detector, or video recorder or another consumer powered by 12 volts.
For this, it will be good to assemble a converter for a car, which will be our 24 Volts, convert 12 Volts. And you can install a cigarette lighter on these 12 Volts, and our consumers can already be turned on there.
Subwoofer box filler
How to choose a filler for a subwoofer enclosure.
When creating a subwoofer with your own hands, you should also consider which filler to choose for the box, and also take into account such rules as.
1) The material of the box should be as deaf as possible. (Knock on plywood 8ke and then 20ke and you will understand what I mean)
2) The box should be as strong as possible. (joints and connections must be stronger than the material itself)
If you think that homemade products are the lot of toddlers and bored housewives, we will very quickly dispel your misconceptions. This section is completely devoted to making homemade products from car parts and rubber tires. Almost anything can be made from a tire. From garden shoes to a full-fledged playground with swings, fairy-tale characters and elements for relaxation. Finally, always busy dads will have the opportunity to show their creative talents and create something useful and beautiful on their own personal plot or backyard.
Car tires tend to become unusable, especially given the domestic quality of roads and sudden temperature changes. Instead of sending an old tire to a landfill, it can be slightly transformed and given new life on the playground, in the garden or vegetable garden.
We have collected a huge number of examples of how to do car homemade products using tires for various household and aesthetic purposes. Perhaps one of the most popular ways to use your old tire is the arrangement of playgrounds. The easiest option is to dig in half a row of tires and paint their upper part in bright colors. The architectural element created in this way will be used by kids as a device for walking and jogging with obstacles, as well as instead of "furniture", because sand products can be laid out on the surface of the tire, or even sit by yourself, resting on a quiet summer evening.
You can aesthetically diversify the exterior of the site by creating fairy dragons, funny bears that will greet your guests at the entrance to the courtyard, crocodiles and other animals lurking in the garden with the help of tires. For flower lovers, a car tire can replace a full-fledged flowerpot, and the plants planted in it will give the yard a well-groomed look.
Children can be pleased by creating a comfortable swing from the best-preserved tires. You can leave the shape of the tire in its original form, and, spending a little more time and effort, create an unusual swing in the form of horses.
Whatever you choose to create a car craft, your children will be delighted to see a homemade car in the yard anyway. Inventive kids will be able to play new games, and will definitely be proud of their folder, showing off your creation to friends. And the mixing of happiness and pride in you in the eyes of a child is perhaps the only thing for which you can step on the throat of a long-awaited weekend in the company of a sofa, TV and beer.
A selection of original and interesting circuit solutions and improvements for different types car.
Car charger machine- The circuit turns on the battery for charging when the voltage on it drops to a certain level and turns off when the maximum is reached.
Charger for a car on an integrated circuit LM7815- The basis of the circuit is an integrated circuit LM7815 with a protection system and analog indicator circuits. A voltmeter and ammeter added to the circuit as indicators provide monitoring of current and voltage during battery charging.
Voltage polarity switch for charger - designed for charging twelve-volt car batteries. Its main feature is that it allows the connection of the battery, at any polarity.
Automatic charger for automotive lead acid batteries
Charger for powerful car batteries
- based on the IR2153 microcircuit, this is a self-clocking half-bridge driver, which is quite often used in industrial ballasts for fluorescent lamps
Engine overheating sensor... In order not to wait for the moment when the water in the radiator turns into steam, you can use the design on the DS1821 thermostat
Ice sensor As soon as the air temperature drops to 4 degrees Celsius, the LED is fixed to dashboard the vehicle will start flashing, with a further decrease in temperature, the LED flashes at a higher frequency. And if the temperature drops to - 1 degree or lower, then the LED will light up constantly to - 6 degrees, and then the device automatically turns off.
Seat belt sensor If you drive with seat belts unfastened, you can get injured in an accident, or run into a fine. In the arsenal of the radio amateur, there are special designs that signal the driver that the belt is not fastened
Radiator water level indicator... A device that signals a decrease in the water level, which will inevitably lead to overheating of the motor.
Voltage indicator in on-board network car Most cars do not have a device, according to the readings of which the driver could judge the voltage of the on-board network. The voltage of the vehicle's on-board network varies widely, depending on the operating mode of the power supply system.
Drivers pre-sleep indicator circuit As you know, up to 25-30% of traffic accidents are caused by drivers falling asleep while driving. To assess the psychophysiological state of the driver in the process of driving vehicle telemetric systems have been developed for monitoring the blinking frequency of his eyelids, recording biopotential, galvanic skin response, and motor activity. All of the above methods have not found wide application in practice due to their complexity, high cost, the need to fix various sensors on the driver's skin.
An amateur radio collection on the topic of lighting in the passenger compartment, as well as homemade designs from the backlight rear number before replacing bulbs in the instrument panel: LED turn signal repeater, automatic anti-glare lamp, Low beam diagrams, structures and accessories for headlights, Stop signal, its purpose and refinement, Scheme of the delay of turning on and off the light in the car, Running lights automatic control circuit on a microcontroller, etc.
Neutral sensor manufacturing... Many car enthusiasts know that a car alarm with auto start on a car with mechanical box gears are set rather difficult, and switching the alarm to the "automatic" mode, you can get an unpleasant result. But, in order to solve these problems, you can make the autostart work safer by installing a neutral sensor from a reed switch. Recall that for autostart with a manual gearbox, the logical neutral of the car to alarm and blocking the doors can be done only when the engine is running and the handbrake is raised. If these conditions are not met, then autostart is not possible.
Anti-theft device simulator simulates your car's engine malfunctions
Infrared remote anti-theft device... The schemes of remote security devices for a car on IR rays are considered, in which information coding is used
Recommendations for installing car alarms What can be done to prevent car theft? Of course, install an anti-theft system. There are many different types of signaling devices currently available. Many firms and installation stations can offer the car owner a number of ways to protect the car from theft. A good alarm does not guarantee complete safety. It is also necessary to have a competent and sometimes non-standard alarm installation. A qualified installer knows the most common methods used by hijackers and uses this knowledge to install
Simple starter interlock circuit consists of only one resistor and an optocoupler.
Diagram of a simple bicycle anti-theft system This design for a bicycle will work, it is worth changing its position, or if you touch it. The alarm sound signal lasts 30 seconds, and after a few seconds, it repeats and so on until the bicycle anti-theft device is turned off.
Wireless car alarm- blocks the car engine using any mobile phone or smartphone
Articles about the manufacture of tools and devices for the maintenance and repair of cars and their main assemblies with their own hands: Service of car batteries; stroboscope-tachometer circuits; Thickness gauge paints and varnishes cars; Homemade regruver for tread cutting and other original designs.
We bring to the attention of radio amateurs a circuit of an electronic "mass" switch, which does not have mechanical contacts and therefore is more reliable and durable. In addition, this device can be used as an anti-theft device.
Auto schemes. Parktronic on a digital microcircuit |
Parktronic is a special auxiliary device that gives additional convenience, especially to a novice car enthusiast, when parking by calculating the distance to the nearest obstacles to the car and signaling the approach to them with sound and visual signs. All parking sensors work like a radar, that is, they emit ultrasonic waves with special ultrasonic sensors and analyze the sound signal reflected from obstacles
It's the 21st century, but car speedometers most cars are still analog, processing signals from a conventional speed sensor. Let's correct this misunderstanding, nav to help, a simple speedometer circuit on a microcontroller for making by hand
Of course, this is not a professional device, but its modest capabilities will allow to identify the degree of alcohol concentration for self-monitoring of the driver in order to prevent trouble on the road.
I think every car enthusiast will not refuse to have an additional service connector in the car, adapted for USB or miniUSB. Such adapters will help out in many situations, for example, powering the PC peripherals, charging mobile phones or smartphones, event recorders, and anything else powered by the USB bus.
Motion sensors (DD) can be used not only for their intended purpose to turn on the light or as an element of burglar alarms, but also in cars. For example, it will scare off a cat that decided to bask under the soot of your car, thereby saving her life, and relieving you of the work of cleaning your engine from the remains of a poor animal. After all, infrared DD will react to any moving biological object that has a "thermal" background.
There are many nodes in the car to control the inclusion and serviceability of which is quite difficult, and for these purposes an audible signaling device is ideal, in addition, its use while driving reverse informs the surrounding pedestrians and other drivers about the movement of the vehicle backward, which is especially important for large trucks
I suggest for your judgment, to familiarize yourself with a simple diagram of a car glass closer. It performs the role of lifting the windows at the moment when the car is put on the security alarm. The stopping of the operation of the window regulator device is carried out as a result of an increase in the flowing current in the load at the moment of full lifting of the glass.
Automotive electric gasoline pump device, principle of operation and repair. As an example, consider the device and principle of operation of the BOSCH 0580254 series submersible electric gasoline pump, which is used in all modifications of the K-Jefronic fuel injection system.
Car alarm It is designed to simulate a car horn, and is made on composite transistors and thyristors
Many have portable receivers and tape recorders with a 9 volt krone battery. On the road, they are conveniently powered from the car battery, without consuming expensive batteries. It is impossible to connect such radio equipment directly to the battery, since its voltage can vary from 10 to 15 V. In addition, when the engine is running, impulse noise appears in the car's on-board network.
A selection of simple schemes for motorists: Anti-sleep buzzer, ice alarms, Installation for cleaning crankcase gases, Device for quick engine start in any frost, Compressometer, Anti-radar, Aerodynamic nozzle for exhaust pipe and other designs
The collection of wiring diagrams for cars is a very large selection.
The circuits considered below on microcontrollers are displayed on a two-digit digital indicator with a common reading from a fuel sensor of 40 liters. The structures are powered from the vehicle's on-board network. A native is connected to the "in" input. car sensor in the tank.
Probably all drivers at least once forgot to turn off the direction indicators after making a maneuver? Regular clicks from the front panel are not always well audible, especially if music is playing in the cabin, so I propose to supplement your car with a simple do-it-yourself turn signal indicator circuit.
The cigarette lighter is one of the few car features that has retained its original design for over 70 years. As a result, the same design is used on both vintage cars and the most modern models. Of course, in the old days this device was used only for one function, although now in the modern "information world" it performs different functions, for example, a connector for charging various digital gadgets or even starting a car.
Amateur radio circuits direction indicators are designed to work only with LEDs in your car's brake lights, if you are still using conventional bulbs you can easily duplicate the design of the turn signal. Simple development " Stop lights"- a homemade time relay will turn off the latter if they burn for more than 40-60 seconds, and turn relay modernization 495.3747 will allow you to enter in standard equipment VAZ or GAZ LEDs instead of incandescent lamps.
The proposed first version of the modernization of the car wiper relay has a higher reliability of operation and can provide dynamic braking of the engine. In this case, no alterations of the standard electrical circuit are required. Enough simple options upgrades to the wiper relay will allow you not to be distracted by turning the wipers on and off. In addition, many older cars have a simple wiper motor speed control - two positions "fast-slow" - little modification is simply necessary. And install a humidity sensor and water drops falling on it will start the circuit themselves.
Car monitor with rear view cameras is very important element in your car, because in modern urban realities you have to be a parking master to find a place to park your car. An example is clearly shown of installing a monitor in a car visor, which makes the image optimally positioned for the driver's eyes.
Nowadays, as never before, there is the issue of accounting and saving energy resources, including fuel for vehicles. Of the wide variety of devices that take into account fuel consumption, the most widespread are devices with a sensor recording element in the form of an impeller. Sensors with a different measuring principle, although they have sufficient accuracy, are difficult to manufacture and have drawbacks. Practice has shown that impeller sensors, made with the necessary and sufficient accuracy, can operate for years without requiring maintenance, with an error in registration below the tolerance for this type of device.
The ignition system is a combination of various automotive instruments and devices that generate an electric spark to ignite the air-fuel mixture in the engine cylinders internal combustion at the moment of turning the ignition key. On this page you can find various schemes connecting the ignition of VAZ cars. As well as homemade radio amateur versions of the electronic ignition circuit
It has the following advantages: the spark power is increased, the breaker contacts do not burn; no need for a resistor in the ignition coil circuit; when the ignition is on, but the engine is not running, the circuit is smoothly without a spark, it turns off
In the Soviet automobile industry, the interrupter of direction indicators of the PC57 type was of an electromagnetic principle of operation and was used to ensure the flashing of signal lamps, which makes the supply of a turn signal to other road users more visible and noticeable. The turn signal interrupter is connected in series with the turn signal lamp circuit. Within the framework of the article, we will consider options for replacing this electromagnetic device with its electronic counterparts.
Probably every motorist forgot to close the windows in the car in the warm season, so that this does not happen anymore, I propose to assemble a scheme designed to automatically close all windows in the car's interior when setting the alarm. Consider several possible options implementation of the design from simple schemes with a relay, to a power window control machine on a microcontroller.
Every driver of a truck or bus with a voltage of 24 volts on-board network faced the problem of connecting a 12-volt consumer. This article implements a solution to this problem.
In all modern cars when the engine temperature approaches a critical level, the radiator cooling fan is activated. But there are a lot of negative effects of a sharp start, which over time affects the electrics of the vehicle. This article describes a diagram of the option for replacing the relay for the soft start of the cooling fan.
Carburetor economizer device |
Carburettors were installed on the car for many years until they gradually freed their place for various fuel injection systems. But the automobile age Russian cars long, and still have to deal with vehicles that still have a carburetor. Well, as you know, its normal operation is provided by some devices, among them the main one is a fuel economizer. It is about him that we will talk, and also consider the scheme of the forced economizer system idle move for VAZ cars
A car starter is a device that allows the engine to start after a turn in all weather conditions. Almost all starters are, in essence, conventional, short-acting, high-power electric motors. The start-up cycle of a typical device consists of three attempts with a 30 second interval between them. Since the car has a single source of electricity (battery), the engineers chose a DC electric motor for the starters.
Every car owner who has driven budget car knows how long to wait for engine heat to warm up in winter, especially if you live in the northern part of the largest country in the world. The time for a comfortable temperature is about 30 minutes, and so on every morning. The best idea for solving this problem, in my opinion, is to heat the car interior with a fan heater. An old toaster and a faulty computer power supply helped to bring the idea to life.
V winter period many Russian drivers start the time when a pre-warmed engine is required to travel by car. The car antifreeze heating circuit helps to solve this problem. The first one discussed is simple enough to repeat.
Heated steering wheel, along with heated seats, mirrors, glass, is not a luxury these days, but an indicator of the level that a person lives in a civilized country. All the listed parameters in personal car very comfortable, and I help the driver to focus only on driving a vehicle, and not on their frozen fingers.
This design is designed to generate a sound signal when driving. trucks and buses back, while in automatic mode a warning beep starts to generate.
The main advantage of the second battery is that the accumulated energy is consumed through an additional battery, and the first is in reserve, that is, you do not have to worry about planting a car after a picnic far from civilization. Many foreign cars already have a second battery under the hood. The only drawback they have is the parallel connection of 2 batteries
This amateur radio design is suitable for charging most smartphones and tablets from 5 volts even with the ignition off. Or it will allow you to power the DVR for 40 minutes, at the moment when the car is waiting for its owner in the parking lot. The basis of the circuit is the AVR Tiny13 microcontroller, the firmware is attached to it.
