Homemade color music from LEDs. Color music on high-power LEDs Light music and color music schemes

simple circuit color music on lamps 220v

Everyone knows and almost everyone assembles this device flickering and flashing to the music-color music. On the Internet, many are looking for color music schemes for various queries and they are different everywhere. I present to your attention the diagram below appearance which you see in the pictures. And so, scheme of working color music for 220 volts on thermistors

A simple color scheme

Details for it will need the bare minimum.

We buy colored incandescent lamps for 220V
Given that the output stage of color music is made on thyristors, it has a lot of power. If the thyristors are placed on heat sinks, then 1000 watts can be loaded on each channel. But for the house, lamps of 60-100 watts are enough.

PCB drawing for light music

I did not use laser ironing technology for such a simple board pattern. I just printed the picture in mirror and put it on the foil.

So that the paper does not move, we fix it with adhesive tape or something else and fix it and mark the places of future holes

We draw the paths with nitro paint

As a transformer, any transformer from a Chinese power supply is suitable, at least from a radiotelephone, at least from something else.

And look at the fully soldered board

We attach the cartridges to the aluminum corner

In addition, the photo sent

Do-it-yourself color music - what could be more pleasant and interesting for a radio amateur, because it is not difficult to assemble it, having a good scheme.

In modern radio engineering, there is a huge variety of radio elements and LEDs, the advantage of which is difficult to question. Large range of colors, bright and saturated light, high response speed of various elements, low energy consumption. This list of benefits is endless.

The principle of operation of color music: LEDs assembled according to the scheme blink from an existing sound source (it can be a player or a radio tape recorder and speakers) with a certain frequency.

The advantages of using LEDs over those previously used in the CMU:

light saturation of light and an extensive color range;
good speed;
low power consumption.

The simplest schemes

A simple color music that can be assembled has one LED, is powered by a 6-12 V DC source.

You can assemble the above circuit using an LED strip and selecting the required transistor. The disadvantage is that there is a dependence of the LED flashing frequency on the sound level. In other words, the full effect can be observed only at one sound level. If the volume is lowered, there will be a rare flashing, and when the volume is increased, a constant glow will remain.

You can remove this drawback with the help of a three-channel sound converter. Below is a simple circuit, it is not difficult to assemble it with your own hands on transistors.

Scheme of color music with a three-channel sound converter

This circuit requires a 9 volt power supply, which will allow the LEDs in the channels to glow. To assemble three amplifying stages, you will need KT315 transistors (similar to KT3102). As a load, multi-colored LEDs are used. A step-down transformer is used for amplification. Resistors perform the function of adjusting the flashes of the LEDs. The circuit contains filters for passing frequencies.

The diagram can be improved. To do this, add brightness with 12 V incandescent bulbs. You will need control thyristors. The whole device must be powered by a transformer. According to this simplest scheme, you can already work. Color music on thyristors can be collected even by a novice radio technician.

How to make color music on LEDs with your own hands? The first thing to do is to choose an electrical circuit.

Below is a diagram of light music with an RGB tape. This setup requires a 12 volt power supply. It can work in two modes: as a lamp and as a color music. The mode is selected by a switch installed on the board.

Manufacturing steps

You need to make a printed circuit board. To do this, you need to take a foil fiberglass with dimensions of 50 x 90 mm and a thickness of 0.5 mm. The board manufacturing process consists of several stages:

preparation of foil textolite;
drilling holes for parts;
drawing tracks;
etching.

The board is ready, the components are purchased. Now the most crucial moment begins - the wiring of radio elements. The final result will depend on how carefully they are installed and soldered.

We assemble our printed circuit board with components soldered on it into such an affordable ceiling.

Brief description of radioelements

Radio elements for the electrical circuit are quite affordable; it will not be difficult to purchase them at the nearest electrical goods store.

For color and musical accompaniment, wire resistors with a power of 0.25–0.125 W are suitable. The resistance value can always be determined by the colored stripes on the body, knowing the order in which they are applied. Trimmer resistors are both domestic and imported.

Industrially produced capacitors are divided into oxide and electrolytic. It will not be difficult to choose the right ones by doing elementary calculations. Some oxide capacitors may have polarity that must be observed during installation.

The diode bridge can be taken ready-made, but if it is not there, then the rectifier bridge is easy to assemble using diodes of the KD or 1N4007 series. LEDs are taken ordinary, with a multi-colored glow. The use of RGB LED strips is a promising direction in radio electronics.

RGB LED strip

Possibility of assembling a color and music console for a car

If you managed to please with color music from a do-it-yourself LED strip, then a similar installation with a built-in radio can be made for a car. It is easy to assemble and quickly set up. It is proposed to place the prefix in a plastic case, which can be bought in the department of electrical and radio engineering. The unit is reliably protected from moisture and dust. It is easy to install behind the dashboard of the car.

Also, a similar case can be made independently using plexiglass.

Plates of the required dimensions are selected, two holes are made in the first of the parts (for power), all parts are sanded. We collect everything with a thermal gun.

An excellent lighting effect is achieved by using multi-colored (RGB) tape.

Conclusion

The well-known saying “not the gods burn the pots” remains relevant today. A diverse range of electronic components gives craftsmen a wide scope for imagination. Do-it-yourself color music on LEDs is one of the manifestations of limitless creativity.

In this article we will talk about color music. Probably, every novice radio amateur, and not only, at one time had a desire to collect color music. What it is, I think, is known to everyone - to put it simply, it is the creation of visual effects that change to the beat of the music.

That part of the color music that emits light can be performed on powerful lamps, for example, in a concert installation, if color music is needed for home discos, it can be done on ordinary 220-volt incandescent lamps, and if color music is planned, for example, as computer modding, for everyday use, it can be done on LEDs.

Recently, with the advent of LED strips on sale, color and music consoles using such led strips are increasingly being used. In any case, for the assembly of Color Musical Installations (CMU for short) a signal source is required, it can be a microphone with several amplifier stages assembled.

Also, the signal can be taken from the line output of the device, sound card computer, from the output of an mp3 player, etc., in this case you will also need an amplifier, for example, two cascades on transistors, for this purpose I used KT3102 transistors. The preamplifier circuit is shown in the following figure:

Preamplifier - Schematic

The following is a diagram of a single-channel color music with a filter, working in conjunction with a preamplifier (above). In this circuit, the LED flashes under the bass (low frequencies). To match the signal level in the color music circuit, a variable resistor R6 is provided.

There are also simpler color music circuits that any beginner can assemble, on 1 transistor, and besides, they do not need a preamplifier, one of these circuits is shown in the picture below:

Color music on a transistor

The pinout diagram of the Jack 3.5 plug is shown in the following figure:

If for some reason it is not possible to assemble a pre-amplifier on transistors, you can replace it with a transformer connected as a step-up one. Such a transformer should produce voltages on the windings of 220/5 Volts. The winding of the transformer with a smaller number of turns is connected in a sound source, for example, a radio tape recorder, in parallel with the speaker, while the amplifier must produce at least 3-5 watts of power. A winding with a large number of turns is connected to the color music input.

Of course, color music is not only single-channel, it can be 3, 5 or more multi-channel, when each LED or incandescent lamp flashes when reproducing the frequencies of its range. In this case, the frequency range is set by using filters. In the following scheme, three-channel color music (which I myself recently collected) capacitors are used as filters:

If we wanted to use in the last circuit not individual LEDs, but an LED strip, then the current-limiting resistors R1, R2, R3 should be removed from the circuit. If RGB tape or LED is used, it must be made with a common anode. If you plan to connect long LED strips, then powerful transistors mounted on radiators should be used to control the strip.

Since the LED strips are designed for 12 volts, respectively, we should raise the power in the circuit to 12 volts, and the power should be stabilized.

Thyristors in color music

So far, the article has only talked about LED color and music devices. If there is a need to assemble a CMU on incandescent lamps, then thyristors will need to be used to control the brightness of the lamps. What is a thyristor anyway? This is a three-electrode semiconductor device, which accordingly has Anode, Cathode and Control electrode.

KU202 Thyristor

The figure above shows the Soviet thyristor KU202. Thyristors, in case it is planned to be used with a powerful load, must also be mounted on a heat sink (radiator). As we can see in the figure, the thyristor has a thread with a nut and is mounted similarly to powerful diodes. Modern imports are simply equipped with a flange with a hole.

One of these thyristor circuits is shown above. This is a three-channel color music circuit with a step-up transformer at the input. In the case of selecting analogs of thyristors, one should look at the maximum allowable voltage of thyristors, in our case, for KU202N it is 400 volts.

The figure shows a similar scheme of color music given above, the main difference in the lower scheme is that there is no diode bridge. Also, color music on LEDs can be built into the system unit. I assembled such a three-channel color music with a preamplifier in a case from a sidirom. In this case, the signal was taken from the computer's sound card using a signal divider, the outputs of which were connected to active acoustics and color music. Signal level adjustment is provided, both general and separately by channels. The preamplifier and color music were powered from the 12 Volt Molex connector (yellow and black wires). The schemes of the preamplifier and three-channel color music for which they were assembled are given above. There are other color music schemes on LEDs, for example this one, also three-channel:

Color music on 3 LEDs - scheme

In this circuit, unlike the one that I collected, an inductance is used in the medium frequency channel. For those who want to assemble something simpler first, I give the following scheme for 2 channels:

If you collect color music on lamps, you will have to use light filters, which, in turn, can be both home-made and purchased. The figure below shows the filters that are commercially available:

Some lovers of color and musical effects assemble devices based on microcontrollers. Below is a diagram of four-channel color music on the AVR tiny 15 MK:

The Tiny 15 microcontroller in this circuit can be replaced with tiny 13V, tiny 25V. And at the end of the review, on my own behalf, I want to say that color music on lamps loses in terms of entertainment to color music on LED, since lamps are more inertial than LEDs. And for independent repetition, you can recommend this

The inexhaustible potential of LEDs has once again been revealed in the design of new and modernization of existing color and music consoles. 30 years ago, color music, assembled from multi-colored 220-volt light bulbs connected to a cassette recorder, was considered the peak of fashion. Now the situation has changed and the function of the tape recorder is now performed by any multimedia device, and instead of incandescent lamps, super-bright LEDs or LED strips are installed.

The advantages of LEDs over light bulbs in color and music consoles are undeniable:

wide color gamut and more saturated light;
various versions (discrete elements, modules, RGB strips, rulers);
high response speed;
low power consumption.

How to make color music using a simple electronic circuit and make the LEDs blink from an audio frequency source? What are the options for converting the audio signal? We will consider these and other questions with specific examples.

The simplest circuit with one LED

First you need to deal with a simple color music circuit assembled on a single bipolar transistor, resistor and LED. Power can be supplied from a DC source with a voltage of 6 to 12 volts. This color music works on a single transistor according to the principle of an amplifying stage with a common emitter. The disturbing action in the form of a signal with varying frequency and amplitude is fed to the base VT1. As soon as the oscillation amplitude exceeds a certain threshold value, the transistor opens and the LED flashes.

The disadvantage of this simple scheme is that the rate of blinking of the LED depends entirely on the level of the audio signal. In other words, a full-fledged color-musical effect will be observed only at one volume level. Lowering the volume will result in a rare wink, and increasing it will result in an almost constant glow.

Scheme with a single-color LED strip

The simplest transistor color music above can be assembled using an LED strip in the load. To do this, you need to increase the supply voltage to 12V, select a transistor with the highest collector current exceeding the load current and recalculate the resistor value. Such the simplest color music from an LED strip is perfect for beginner radio amateurs to assemble with their own hands, even at home.

Simple three-channel circuit

A three-channel sound converter allows you to get rid of the shortcomings of the previous scheme. The simplest scheme of color music with the division of the sound range into three parts is shown in the figure.
It is powered by a constant voltage of 9V and can light one or two LEDs in each channel. The circuit consists of three independent amplifying stages assembled on transistors KT315 (KT3102), the load of which includes LEDs of different colors. As an element for pre-amplification, you can use a small step-down type network transformer.

The input signal is applied to the secondary winding of the transformer, which performs two functions: galvanically isolates the two devices and amplifies the sound from the line output. Further, the signal is fed to three parallel-connected filters assembled on the basis of RC circuits. Each of them operates in a certain frequency band, which depends on the values of resistors and capacitors. The low-pass filter passes sound vibrations up to 300 Hz, as evidenced by the flashing red LED. Sound in the range of 300-6000 Hz passes through the mid-pass filter, which is manifested in the flickering of the blue LED. The high-pass filter passes the signal above 6000 Hz, which corresponds to a green LED. Each filter is equipped with a tuning resistor. With their help, you can set the uniform glow of all LEDs, regardless of the musical genre. At the output of the circuit, all three filtered signals are amplified by transistors.

If the circuit is powered from a low-voltage DC source, then the transformer can be safely replaced with a single-stage transistor amplifier.
First, galvanic isolation loses its practical meaning. Secondly, the transformer loses several times to the circuit shown in the figure in terms of weight, size and cost. The circuit of a simple audio frequency amplifier consists of a KT3102 transistor, two capacitors that cut off the constant component, and resistors that provide the transistor with a common emitter mode. By using a trimmer, you can achieve the overall gain of a weak input signal.

In the case when it is necessary to amplify the signal from the microphone, an electret microphone is connected to the input of the previous circuit, applying a potential to it from the power source. The diagram of a two-stage preamplifier is shown in the figure.
In this case, the tuning resistor is at the output of the first amplifying stage, which gives more opportunities for adjusting the sensitivity. Capacitors C1-C3 pass the useful component and cut off the direct current. For implementation, any electret microphone is suitable, for the normal operation of which a bias of 1.5V is sufficient.

Color music with RGB LED strip

The following color and music box circuit operates on 12 volts and can be installed in a car. It combines the main functions of the previously considered circuit solutions and is able to work in the mode of color music and lamp.

The first mode is achieved by contactless control of the RGB tape with a microphone, and the second mode is achieved by simultaneously glowing the red, green and blue LEDs at full power. The mode is selected using a switch located on the board. Now let's dwell on how to make color music, which is perfect even for installation in a car, and what details will be required for this.

Structural scheme

To understand how this color-musical prefix works, we first consider its block diagram. It will help to trace the complete path of the signal.
The source of the electrical signal is a microphone that converts sound vibrations from a phonogram. Because this signal is too small and needs to be amplified with a transistor or an op-amp. This is followed by an automatic level control (AGC), which keeps the fluctuations of the sound within reasonable limits and prepares it for further processing. Filters separate the signal into three components, each of which operates in only one frequency range. In the end, it remains only to amplify the prepared current signal, for which transistors operating in the key mode are used.

circuit diagram

Based on the structural blocks, you can proceed to the consideration of the circuit diagram. Its general view is shown in the figure.
To limit the current consumption and stabilize the supply voltage, a resistor R12 and a capacitor C9 are installed. R1, R2, C1 are set to set the microphone bias voltage. Capacitor C fc is selected individually for a specific microphone model during commissioning. It is needed in order to slightly muffle the signal of the frequency that prevails in the operation of the microphone. Usually reduce the influence of the high-frequency component.

Unstable voltage of the car network can affect the operation of color music. Therefore, it is most correct to connect home-made electronic devices through a 12V stabilizer.

Sound vibrations in the microphone are converted into an electrical signal and through C2 are fed to the direct input of the operational amplifier DA1.1. from its output, the signal follows the input of the operational amplifier DA1.2, equipped with a feedback circuit. The resistances of the resistors R5, R6 and R10, R11 set the gain DA1.1, DA1.2 equal to 11. The OS circuit elements: VD1, VD2, C4, C5, R8, R9 and VT1, together with DA1.2, are part of the AGC. At the moment the signal of too large amplitude appears at the output DA1.2, the transistor VT1 opens and through C4 closes the input signal to a common wire. This results in an instant voltage drop at the output.

Then the stabilized audio frequency alternating current passes through the cut-off capacitor C8, after which it is divided into three RC filters: R13, C10 (LF), R14, C11, C12 (MF), R15, C13 (HF). In order for the color music on the LEDs to shine brightly enough, you need to amplify the output current to the appropriate value. For a tape with a consumption of up to 0.5A, medium-power transistors such as KT817 or imported BD139 without mounting on a radiator are suitable for each channel. If the do-it-yourself light music being assembled involves a load of about 1A, then the transistors will need forced cooling.

In the collectors of each output transistor (parallel to the output) there are diodes D6-D8, the cathodes of which are interconnected and connected to the switch SA1 (White light). The second contact of the switch is connected to ground (GND). While SA1 is open, the circuit operates in color music mode. When the switch contacts are closed, all the LEDs in the strip light up at full brightness, forming a white stream of light in total.

PCB and Assembly Parts

For the manufacture of a printed circuit board, you will need a one-sided textolite measuring 50 by 90 mm and a ready-made .lay file, which can be downloaded. For clarity, the board is shown from the side of the radio elements. Before printing, you must specify its mirror image. Layer M1 shows 3 jumpers placed on the side of the parts.
To assemble color music from an LED strip with your own hands, you will need affordable and inexpensive components. Microphone electret type, suitable in a protective case from the old audio equipment. Light music is assembled on a TL072 chip in a DIP8 package. Capacitors, regardless of type, must have a voltage margin and be rated for 16V or 25V. If necessary, the design of the board allows you to install output transistors on small heatsinks. A 6-position terminal block is soldered on the edge for power supply, connecting an RGB LED strip and a switch. A complete list of elements is given in the table. In conclusion, I would like to note that the number of output channels in a home-made color and music console can be increased arbitrarily. To do this, you need to break the entire frequency range into more sectors and recalculate the bandwidth of each RC filter. Connect LEDs of intermediate colors to the outputs of additional amplifiers: purple, turquoise, orange. From such an improvement, do-it-yourself color music will only become more beautiful.

The above schemes belong to the site cxem.net

What is needed to make color music

Resistors for the color and music installation, of our own production, can only be used constant, with a power of 0.25-0.125. Suitable resistors can be seen in the figure below. The bars on the case show the amount of resistance.

Also, R3 resistors are used in the circuit, and trimmers R - 10, 14, 7 and R 18, regardless of type. The main requirement is the ability to install on the board used in the assembly. The first version of LED color music was assembled using a variable type resistor with the designation SPZ-4VM and imported trimmers.

As for capacitors, you need to use parts with an operating voltage of 16 volts, no less. Type can be any. If it is difficult to find the capacitor C7, you can connect in parallel two smaller ones in order to obtain the required parameters.

The capacitors C1, C6 used in the LED color music circuit must be able to operate at 10 volts, respectively C9–16V, C8–25V. If instead of old Soviet capacitors, it is planned to use new, imported ones, then it is worth remembering that they have a difference in designation, you need to determine in advance the polarity of the capacitors that will be installed, otherwise you can confuse and ruin the circuit.

Even for the manufacture of color music, you will need a diode bridge, with a voltage of 50V and a working current of about 200 milliamps. In the case when it is not possible to install a ready-made diode bridge, you can make it from several rectifier diodes, for convenience they can be removed from the board and mounted separately using a smaller board.

The parameters of the diodes are selected similarly to those used in the factory version of the bridge, diodes.

LEDs should be red, blue and green. For one channel, you need six of them.

Another necessary element is a voltage stabilizer. A five-volt stabilizer is used, imported, with article 7805. You can also use 7809 (nine-volt), but then the resistor R22 must be excluded from the circuit, and a jumper connecting the negative bus and the middle output is put in its place.

Connect color music with music center, it is possible using a three-pin jack connector.

And the last thing you need to have for assembly is a transformer with suitable voltage parameters.

The general scheme for the assembly of color music, which uses the details described in the photo below.

Several working schemes

Below will be offered several working schemes for color music on LEDs.

Option number 1

For this circuit, you can use LEDs of any type. The main thing is that they are super-bright and different in glow. The circuit works according to the following principle, the signal from the source is transmitted to the input, where the channel signals are summed and then sent to a variable resistance. (R6, R7, R8) Using this resistance, the signal level for each channel is regulated, and then fed to the filters. The difference between filters is in the capacitance of the capacitors used to assemble them. Their meaning, as in other devices, is to transform and purify the sound range within certain limits. These are high, mid and low frequencies. Adjustment resistors are installed in the color music circuit for adjustment. After going through all this, the signal goes to the microcircuit, which allows you to install various LEDs.

Option number 2

The second version of color music on LEDs is distinguished by its simplicity and is suitable for beginners. The circuit involves an amplifier and three channels for frequency processing. A transformer is installed, which can be dispensed with if the input signal is sufficient to open the LEDs. As in similar circuits, adjusting resistors are used, designated as R4 - 6. Any transistors can be used, as long as they transmit more than 50% of the current. Basically, nothing else is required. The scheme, if desired, can be improved to obtain a more powerful color and music setup.

Step-by-step assembly of the simplest color music model

To assemble a simple color music on LEDs, you will need the following materials:

five millimeter LEDs;
wire from old headphones;
original or analogue of the transistor KT817;
12 volt power supply;
several wires;
a piece of plexiglass;
glue gun.

The first thing to start with is to make a body of the future color music from plexiglass. To do this, it is cut to size and glued with a glue gun. The box is better to make a rectangular shape. Sizes can be adjusted to suit you.

To calculate the number of LEDs, divide the adapter voltage (12V) by the working LED (3V). It turns out we need to install 4 LEDs in the box.

We clean the headphone cable, it has three wires, we will use one left or right channel, and one common.

We do not need one wire and it can be isolated.

The scheme of simple color music on LEDs is as follows:

Before assembly, we lay the cable inside the box.

LEDs have polarity, respectively, when connecting, it must be taken into account.

During the assembly process, you need to try not to heat the transistor, because this can lead to its breakdown, and consider the markings on the legs. The emitter is designated as (E), base and collector, respectively (B) and (K). After assembling and checking, you can install the top cover.

Ready-made version of color music on LEDs

In conclusion, I would like to say that assembling color music on LEDs is not as difficult as it might seem at first. Of course, if you need a device with a beautiful design, then you already have to spend a lot of time and effort. But for the manufacture of simple color music for informational or entertainment purposes, it is enough to assemble one of the presented schemes in the article.