The design is made on only one chip K561IE16. Since, for him proper operation If we need an external clock generator, in our case we will replace it with a simple blinking LED.

As soon as we apply power to the timer circuit, the capacitance C1 will start charging through the resistor R2 therefore, a logical one will briefly appear at pin 11, resetting the counter. The transistor connected to the meter output will open and turn on the relay, which will connect the load through its contacts.

With a flashing LED with a frequency 1.4 Hz pulses are sent to the clock input of the counter. With each pulse drop the counter counts. Through 256 pulses or about three minutes, a logical one level will appear at pin 12 of the counter, and the transistor will close, turning off the relay and the load switched through its contacts. In addition, this logical unit passes to the DD clock input, stopping the timer. The operating time of the timer can be selected by connecting point “A” of the circuit to various outputs of the counter.

The timer circuit is implemented on a microcircuit KR512PS10, which has in its internal composition a binary counter-divider and a multivibrator. Like a conventional counter, this microcircuit has a division coefficient from 2048 to 235929600. The selection of the required coefficient is set by applying logical signals to the control inputs M1, M2, M3, M4, M5.

For our timer circuit, the division factor is 1310720. The timer has six fixed time intervals: half an hour, an hour and a half, three hours, six hours, twelve hours and a day of an hour. The operating frequency of the built-in multivibrator is determined by the resistor values R2 and capacitor C2. When switch SA2 is switched, the frequency of the multivibrator changes, and passing through the counter-divider and the time interval.

The timer circuit starts immediately after turning on the power, or you can press the SA1 toggle switch to reset the timer. In the initial state, the ninth output will have a logical one level and the tenth inverse output, respectively, a zero. As a result of this, the transistor VT1 connects the LED part of the optothyristors DA1, DA2. The thyristor part has an anti-parallel connection, this allows you to regulate the alternating voltage.

Upon completion of the time countdown, the ninth output will set to zero and turn off the load. And at output 10 a unit will appear, which will stop the counter.

The timer circuit is launched by pressing one of three buttons with a fixed time interval, and it begins to count down. In parallel with pressing the button, the LED corresponding to the button lights up.

When the time interval expires, the timer emits a sound signal. A subsequent press will turn off the circuit. Time intervals are changed by the ratings of radio components R2, R3, R4 and C1.

Timer circuit, which provides a turn-off delay, is shown in the first figure. Here, a transistor with a p-type channel (2) is connected to the load power circuit, and a transistor with a n-type channel (1) controls it.

The timer circuit works as follows. In the initial state, capacitor C1 is discharged, both transistors are closed and the load is de-energized. When you briefly press the Start button, the gate of the second transistor is connected to the common wire, the voltage between its source and gate becomes equal to the supply voltage, it instantly opens, connecting the load. The voltage surge that appears on it through capacitor C1 is supplied to the gate of the first transistor, which also opens, so the gate of the second transistor will remain connected to the common wire even after the button is released.

As capacitor C1 is charged through resistor R1, the voltage across it increases, and at the gate of the first transistor (relative to the common wire) decreases. After some time, depending mainly on the capacitance of capacitor C1 and the resistance of resistor R1, it decreases so much that the transistor begins to close and the voltage at its drain increases. This leads to a decrease in the voltage at the gate of the second transistor, so the latter also begins to close and the voltage across the load decreases. As a result, the voltage at the gate of the first transistor begins to decrease even faster.

The process proceeds like an avalanche, and soon both transistors close, de-energizing the load, capacitor C1 quickly discharges through diode VD1 and the load. The device is ready to start again. Because field effect transistors Assemblies begin to open at a gate-source voltage of 2.5...3 V, and the maximum permissible voltage between gate and source is 20 V, then the device can operate with a supply voltage from 5 to 20 V (the nominal voltage of capacitor C1 should be several volts more than the supply). The shutdown delay time depends not only on the parameters of elements C1, R1, but also on the supply voltage. For example, increasing the supply voltage from 5 to 10 V leads to its increase by approximately 1.5 times (with the nominal values ​​of the elements indicated in the diagram, it was 50 and 75 s, respectively).

If, with the transistors closed, the voltage across resistor R2 is more than 0.5 V, then its resistance must be reduced. A device that provides a switch-on delay can be assembled according to the circuit shown in Fig. 2. Here the transistors of the assembly are connected in approximately the same way, but the voltage to the gate of the first transistor and capacitor C1 is supplied through resistor R2. In the initial state (after connecting the power source or after pressing the SB1 button), capacitor C1 is discharged and both transistors are closed, so the load is de-energized. As R1 and R2 charge, the voltage across the capacitor rises, and when it reaches approximately 2.5 V, the first transistor begins to turn on, the voltage drop across R3 increases, and the second transistor also begins to turn on. When the load voltage increases so much that diode VD1 opens, the voltage across resistor R1 increases. This leads to the fact that the first transistor, and then the second one, opens faster and the device abruptly switches to the open state, closing the load power circuit

The timer circuit is a restart, for this you need to press the button and hold it in this state for 2...3 s (this time is enough to completely discharge capacitor C1). Timers are mounted on printed circuit boards made of fiberglass foil on one side, the drawings of which are shown in Fig. 3 and 4. The boards are designed for the use of diodes of the KD521, KD522 series and surface mounting parts (resistors R1-12, size 1206 and tantalum oxide capacitor). Setting up devices comes down mainly to selecting resistors to obtain the required time delay.

The described devices are designed to be included in the positive power supply wire of the load. However, since the IRF7309 assembly contains transistors with both channel types, the timers can easily be adapted to be included in the negative wire. To do this, the transistors should be swapped and the diode and capacitor switched on in reverse polarity (of course, this will require corresponding changes in the printed circuit board drawings). It should be taken into account that if the connecting wires are long or there are no capacitors in the load, interference on these wires and uncontrolled activation of the timer is possible. To increase noise immunity, a capacitor with a capacity of several microfarads with a rated voltage of at least the supply voltage must be connected to its output.

Five minute timer circuit

If the time interval is more than 5 minutes, the device can be restarted and continue counting again.

After a short circuit of SВ1, capacitance C1, connected to the collector circuit of transistor VT1, begins to charge. The voltage from C1 is supplied to an amplifier with a high input resistance on transistors VT2-VT4. Its load is an LED indicator that turns on alternately every minute.

The design allows you to choose one of five possible time intervals: 1.5, 3, 6, 12 and 24 hours. The load is connected to the AC mains when the time starts and is disconnected when the time ends. Time intervals are set using a frequency divider of square wave signals generated by an RC multivibrator.

The master oscillator is made on the logical components DD1.1 and DD1.2 of the microcircuit K561LE5. The generation frequency is formed by an RC circuit on R1,C1. The accuracy of the stroke is adjusted over the shortest time interval, using the selection of resistance R1 (temporarily, when adjusting, it is advisable to replace it with a variable resistance). To create the necessary time ranges, pulses from the multivibrator output go to two counters DD2 and DD3, as a result of which the frequency is divided.

These two counters - K561IE16 are connected in series, but for simultaneous reset, the zeroing pins are connected together. Reset occurs using switch SA1. Another toggle switch SA2 selects the required time range.

When a logical one appears at the output of DD3, it goes to pin 6 of DD1.2, as a result of which the generation of pulses by the multivibrator ends. At the same time, the logical one signal goes to the input of the inverter DD1.3 to the output of which VT1 is connected. When a logical zero appears at the output of DD1.3, the transistor closes and turns off the LEDs of the optocouplers U1 and U2, and this turns off the triac VS1 and the load connected to it.

When the counters are reset, their outputs are set to zero, including the output to which switch SA2 is installed. A zero is also supplied at the input of DD1.3 and, accordingly, a unit at its output, which connects the load to the network. Also in parallel, the zero level will be set at input 6 of DD1.2, which will trigger the multivibrator and the timer will begin counting. The timer is powered using a transformerless circuit consisting of components C2, VD1, VD2 and C3.

When toggle switch SW1 is closed, capacitor C1 begins to slowly charge through resistance R1, and when the voltage level on it is 2/3 of the supply voltage, trigger IC1 will respond to this. In this case, the voltage at the third terminal will drop to zero, and the circuit with the light bulb will open.

With a resistance of resistor R1 of 10M (0.25 W) and capacitance C1 of 47 µF x 25 V, the operating time of the device is about 9 and a half minutes, if desired, it can be changed by adjusting the values ​​of R1 and C1. The dotted line in the figure indicates the inclusion of an additional switch, with which you can turn on the circuit with the light bulb even when the toggle switch is closed. The design's quiescent current is only 150 μA. Transistor BD681 - compound (Darlington) medium power. Can be replaced with BD675A/677A/679A.

This is a timer circuit on a PIC16F628A microcontroller, borrowed from a good Portuguese site on radio electronics. The microcontroller is clocked from an internal oscillator, which can be considered accurate enough for at this moment, since pins 15 and 16 remain free, you can use an external quartz resonator for even greater accuracy in operation.

Kitchen timer

Just one microcircuit and several other radio components are needed to assemble a relatively simple timer (Fig. 1). It can be easily introduced into the kitchen for cooking or in many other cases. The duration of the timer is set in the range from 1 to 90 minutes using switches S 2 and S 3.

Fig.1

The timer consists of a time relay made on the element D 1.1 , element generator D 1.2 and D 1.3, inverter on element D 1.4, transistor amplifier and headphone.

To start the timer, press the button S 1, allowing capacitor C1 (and C2, if it is connected by a switch) to discharge S 2). After releasing the button, the capacitor begins to charge through the resistor R 2 or a chain of series-connected resistors R 2 - R 12 - it depends on the position of the moving contact of the switch S 3. As soon as the voltage at the inputs of the element D 1.1 reaches the switching threshold, a logical 1 signal appears at the output of the element and the generator turns on. Its oscillations with a frequency of about 1000 Hz will be sent through an inverter and an amplifier to the headphone, which is a sound indicator. An amplifier is needed to match the load (phone B1) with the inverter output. When there is no oscillation, the transistor is in the off state. This ensures the high efficiency of the timer - in standby mode it consumes a current of no more than 0.5 mA.

Sound indicator B1 - any telephone capsule with a winding resistance of 40 ... 120 Ohms. Instead, a small-sized dynamic head, for example 0.1GD-6, is suitable, but it should be connected to the collector circuit through an output transformer. The sound volume in both cases is set by selecting resistors R 16 and R 15.

Power supply G.B. 1 - “Crown”. The timer operates stably when the supply voltage drops to 4 V, but at the same time the duration of the shutter speeds increases slightly and the volume of the sound signal decreases.

Setting up a timer comes down to selecting capacitor C2 and resistors R 2 - R 12. The capacitance of the capacitor must be such that when it is connected by a switch S 2, the shutter speed, for example, in the first sub-range, increased 10 times. More precisely, the shutter speed specified for the first sub-range is set by selecting a resistor R 2, for the second sub-band - by selecting a resistor R 3, etc. Naturally, the shutter speeds may be different compared to those indicated in the diagram - you just need to install resistors R 2 - R 12 matching resistances.

If the timer is intended to report short exposures (up to 30 minutes), it can be simplified by replacing the switch S 3 and resistors R 3 - R 13 variable resistor with a resistance of 3.3...4.7 MΩ.

Strelnikov P.

Novosibirsk city

Good afternoon. My first article. I don’t claim authorship, I’m just sharing my assembly experience. This is a pic16f84 kitchen timer with a full keyboard and a four-segment display. Original article (Author - Allex).

The writing of this article was prompted by the lack of a printed circuit board in the original and a small error with resistor R3 (you need to put 100 Ohms instead of 100 kOhm). So what do we need:
1. 7805;
2. Two ice indicators with a common cathode Rl-D5613 (although I recommend re-wiring the board for Rl-D5611 indicators);
3. 1 5 Volt beeper with internal generator;
4. 5 resistors per 10 kOhm;
5. 1 resistor per 100 Ohm;
6. 3 resistors per 100 kOhm;
7. microcontroller pic16f84;
8. 12 buttons (the same type as those found in mice, only with long buttons);
9. Quartz at 4 MHz;
10. 2 capacitors at 33pF;
11. 1 capacitor at 0.33 mF;
12. 1 capacitor 0.1 mF;
13. Power contacts from a crown battery;
14. Case Z-19 (if desired, you can take a different type with a battery compartment);
15. Microcontroller socket for 18 legs.

We transfer the printed circuit board to PCB using the LUT method and etch (after etching, some of the tracks were torn, so the device did not work immediately, after correcting the breaks, the device started working).
We flash the microcontroller. In the ICprog program we set all fuses to “removed” and in the drop-down list to “HS”.

We assemble the device according to the diagram:

14 leg plus. 5 leg minus. To the 4th leg there is a 10 kOhm resistor and to the power supply plus. To the 15-16 leg quartz and capacitors and to minus.
Next, we mount it into the case, cut out a window and glue the plexiglass, and also cut out holes for the buttons.

View of the finished device.

Disadvantages of the device:
In this implementation, protection of the PCB from dirt is not thought out; it is worth putting either covers (caps) on the buttons, or buying a ready-made keyboard.
It is also worth adding a switch to the battery, since at 9V it consumes up to 50 μA, and when the battery is dead at 5V, only 15 μA.

Pros:
Low power consumption, up to 40 hours on one battery.
Small sizes.
Ease of implementation. Few details.
Doesn't need any setup.
A full-fledged keyboard (no need to explain to your wife how many times to point where).
Availability of hours.

I am attaching the firmware and software of the device.
▼ 🕗 12/07/10 ⚖️ 824.35 Kb ⇣ 118 Hello, reader! My name is Igor, I'm 45, I'm a Siberian and an avid amateur electronics engineer. I came up with, created and have been maintaining this wonderful site since 2006.
For more than 10 years, our magazine has existed only at my expense.

Good! The freebie is over. If you want files and useful articles, help me!

--
Thank you for your attention!
Igor Kotov, editor-in-chief of Datagor magazine

How to choose a clock for the kitchen and what types exist?

For any style of kitchen interior, you can choose a watch that will harmoniously complement it. A watch is an essential accessory, without which it is difficult to imagine a modern home. Whatever style the interior is decorated in, you can always choose a watch that will fit perfectly into it and highlight its features. A clock must be present in the kitchen, because when cooking it is always important to keep track of the time. And here mobile phones and other modern devices will not help at all. After all, sometimes you look at how much time you need quickly, but your hands may be busy cooking or simply dirty. How to choose a clock for the kitchen?

Purpose and types of kitchen clocks

The clock in the kitchen has many roles:

• show the exact time;
• act as a cooking timer;
• decorate the interior.

There are a huge variety of types of clocks for the kitchen - these include classic models, original ones, and cool, playful things. But with an abundance of different models in the kitchen, a fairly limited number of types of clocks are used. A grandiose grandfather clock would hardly be appropriate here, for which there is hardly room in the kitchen. But all kinds of wall clocks, timers, and tabletop options are well suited.

The minimal "Time" wall clock will fit perfectly into loft, minimalism or Hi-Tech style

A kitchen clock can be a distinctive piece of furniture
Kitchen clocks can have very different purposes.

Where to place the clock

Where to place the clock in the kitchen? Convenience is important here first and foremost. The kitchen clock should be in a place where you can immediately see it while working. Or, in order to see what time it is, you need to turn around slightly. As a rule, the clock is hung on a wall located in the work area or dining area. These can be original or classic wall clocks in different styles.

The question of where to place the clock is individual for each kitchen.

Important: On the one hand, the clock is very important when cooking and it is tempting to place it near the stove. On the other hand, fat and soot will then settle on them, which does not add beauty to the watch. In this case, you can either cover the kitchen clock with glass or place a timer in this place.

If the kitchen is small, then just one clock is enough. They can be placed on the wall that combines the work and dining areas. Then the clock will be visible to everyone from everywhere. If the kitchen is large, then it is appropriate to have several hours on it. In this case, you can choose wall and table clocks. A table clock can be placed on the work area, on the island or on the bar counter.

Wall clock in the kitchen

Wall clocks are the most popular type of clock in the kitchen. Their practical function is to show the time. But in fact, their decorative role in the kitchen is no less important. They sometimes become one of the most noticeable and striking elements of the interior. Wall clocks can either add completeness and harmony to the interior, or completely destroy it if they are made in a different style than the rest of the room.

The practical function of kitchen wall clocks is no less important than their decorative role
When choosing a wall clock for the kitchen, it is important to take into account the overall style of the room.

When choosing a watch, it is important to decide on its style. If the room is made in a classical style, then the clock should be strict and classic. If Art Nouveau reigns around, then rich decor, an abundance of ornaments and original shapes are welcome. In high-tech kitchens, a clock with a minimum of decorative elements and strict, laconic forms will look very impressive. A very original watch - with a transparent dial, creating the illusion of hands on the wall. Or, on the contrary, an asymmetrical watch with barely visible hands and no numbers.

The informal purpose of a kitchen wall clock is to lift the mood before the working day.

Fun, cool watch models are often chosen for kitchens. And this is not surprising - not everyone is able to feel cheerful and fresh in the morning when getting ready for work. And the wall clock is designed to cheer you up before leaving for work. Cool watches can be different forms and flowers - in the form of all kinds of funny characters, cartoon characters. The arrows can be forks and spoons. By the way, this technique – using a fork and spoon in the kitchen – is often used. And it can’t just be arrows. You can replace the handles on the headset and choose cool models in the form of a spoon and fork. And then hang a clock with arrows representing forks and spoons. You will get the finished style of the room.

Original wall clock for the kitchen (video)

Do it yourself

By the way, you can make such a watch yourself. The most common plastic disposable forks and spoons, a plastic jar lid, glue and acrylic paints are suitable for this.

You can make an original watch from disposable plastic utensils and an old clock mechanism.

In this case, the forks and spoons are the dial, not the hands. Forks, spoons, and knives are attached in a circle to the plastic lid. Then the whole thing is covered with paint.

Important: it is best to use paint in an aerosol can. Then it lays flat and turns out very beautiful and not artisanal. You can purchase creative spray paints for decorative work. With their help you can create real designer things.

After the paint has dried, attach the clock mechanism with hands that can be taken from an old watch.

Original creative watches also lift your spirits. Wall clocks in the shape of fried eggs, with cooks and cats with shifty eyes leave almost no one indifferent. If you want creativity, but don’t want kitsch, then you can choose a watch in which the dial is made of coffee beans and other grains.

DIY kitchen fork-spoon clock (video)

Provence style watch

Watches in Provence style are worthy of special attention. By by and large Provence style is a variation of the folk style. Provence is characterized by natural materials, pastel colors, an abundance of light, and some ostentatious simplicity. The main thing is that Provence is based on decorative elements. An abundance of ceramic dishes in blue and white tones, open shelves, curtains and tablecloths with floral patterns, furniture painted with small flowers and stripes.

A Provence style watch must be round and have a distinctly simple shape. They can be painted in a small pattern or have artificial aging. A Provence-style clock should not be bright and conspicuous - it should be organically woven into the interior.

Wall clock in Provence style will harmoniously fit into the interior of any kitchen

How to choose the right watch

Of course, first of all, the watch is chosen in the same style as the decor of the entire kitchen. Otherwise the room will look tasteless. But when choosing a watch, they take into account not only the style in which it is made.

To make your kitchen look organic, pay attention to the following points:

• The color of the watch should match the color scheme of the interior. They are either made in companion colors or, on the contrary, in a contrasting color to the main color of the walls.

The color of the watch should be combined with the color palette of the entire interior The material from which the watch is made must be practical

For small kitchen a small dial or no dial at all is acceptable
Kitchen clocks should be chosen in a style that matches the style of your kitchen.

• The size of the clock is selected based on the size of the kitchen. In a small kitchen, the dimensions of the dial should also be small - a “station” clock with a diameter of up to 50-100 cm would look extremely ridiculous in a 7-meter kitchen. Similarly, in large kitchens, small-sized wall clocks can get completely lost on the wall.
• The material from which the kitchen clock is made must be hygienic and withstand wet cleaning. Since the kitchen is a place where food is constantly being prepared, it is more than likely that greasy fumes will get on household items. Therefore, the clock will have to be wiped more often than in the living room. And use detergents. For the kitchen, more suitable materials are plastic, metal, glass.

Kitchen timer clock

A clock timer is a must-have item for the kitchen. And even if at first it seems that you can easily do without them, but as soon as a timer appears in the kitchen, they begin to use it very actively.

Currently on sale:

• mechanical timer;
• electronic kitchen timer.

An electronic timer is very similar to an electronic desk clock. It can work on batteries or from the mains.

Advantages of an electronic timer:

• compactness - thanks to its small size, such a timer can be carried from room to room, even carried in your pocket. In this case, you can always know exactly how long the dish has left to cook;
• high accuracy of operation - the timer counts down to the second;
• aesthetic appearance.

Electronic clock-timer for the kitchen is very compact and accurate in operation

The disadvantages of electronic timers include the need to change batteries. And sometimes it stops working because they forgot to do it on time.

A mechanical timer is often built into the stove. There is a model of a mechanical timer that can be carried and placed on a table.

A mechanical timer has undeniable advantages:

• it is extremely easy to use;
• does not break;
• long service life;
• no need to spend money on buying batteries.

Despite its simplicity, a mechanical timer can decorate the kitchen - manufacturers try to give timers an aesthetic appearance.

The principle of operation of the timer is simple - there is a spring inside the device, which is wound with a handle and begins to gradually unwind, thereby counting the time. After the specified time has passed, the timer emits a signal.

There are built-in timers. They are built into household appliances– multicooker, microwave, stove. The built-in timer has only one drawback - it cannot be moved.

A mechanical kitchen timer is more durable than an electronic one.
The mechanical type timer is very lightweight and easy to use.

Manufacturers try to attract attention to their products and create very original timers that can perform different functions. For example, there are thermometer timers. Such timers have a sensor on the spoke. The knitting needle is immersed in the dish and a certain temperature is set at which the dish is considered ready. When this temperature is reached, the timer gives a signal. With this timer you don't have to worry about overcooking meat or fish.

Timer egg can be immersed in water along with real chicken eggs. It will beep as soon as the eggs are cooked. There is even a timer that simultaneously reports the readiness of the spaghetti and the expected number of servings.

Depending on the type of fastening, timers are:

• wall;
• desktop;
• fixed to a vertical wall using a suction cup.

It is especially important what material the timer is made of. Since the kitchen is a place where there are aggressive environments, the timer must be resistant to moisture and wet cleaning. In addition, the timer is often handled with dirty hands. Its surfaces must therefore be made of a material that would not be damaged by this. Most best material– stainless steel and plastic.

But since timers also become an element of the interior, it is important that they match general style. Electronic models with a large liquid crystal display are suitable for high-tech kitchens, and mechanical models in the form of vegetables and fruits are suitable for classic and Provence-style interiors.

Original DIY kitchen clock (video)

Conclusion

Whatever watch you choose, it will always help you keep track of time. And, of course, decorate the kitchen!

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Kitchen timer

For those who are interested in the device itself and its functionality, see the last paragraph, omitting the details.
It all started with burnt saucepans, blackened scrambled eggs, boiled-over soup: this list could have gone on for a long time if one day the explosion of a can of condensed milk had not interrupted my sweet dream... Woke up, I thought, “Something needs to be done!” It was immediately decided to make this “Whatever” as usable as possible, because... history knows a lot of examples when the device was so perfect that its intended use no longer seems appropriate. Of course, I was worried whether the idea of ​​“remembering that after 3 minutes you need to turn off the dumplings” would seem more rational than squeezing tricky combinations of many buttons, and then, while waiting for readiness, twitching in doubt, “is the start button pressed??” The conclusion became obvious: the device must have a button, a wheel, an indicator, and NOTHING unnecessary!

The timer has a screen, a button and a wheel. After turning on the button, *0* is displayed on the screen. The wheel sets the timing time (scrolling is looped and can be set from zero to minus, 0 - 99 - 98 - 97---). The countdown starts automatically when each new value is set, and always starts from 59 seconds. During the countdown, “tick-tock-tick-tock” sounds, similar to the sound of a pendulum. At the end of the countdown, the USSR anthem sounds, after which: pi:pi:pi: (until it is turned off). Simply pressing the button once turns the device off. If you press and hold, the words “OF” “RE*” “CE” light up on the screen alternately at intervals of a second. These are the names of the modes. To select one of them, you need to release the button, packing the inscription on the screen.
"OF" - Turn off.
"RE" - Restart the countdown. The last value set by the wheel/stopwatch is loaded from memory (during the countdown process, the wheel is still active and allows you to make changes!). The repeat memory is not reset after switching off and on.
"CE" - Stopwatch. In this mode, a simple press of the button starts or stops the stopwatch, the wheel is locked, the transition to any other mode (as well as switching off) is also carried out by long pressing the key - “OF” “RE” “CE”. Selecting "OF" will turn it off. Selecting "RE" will restart the total time counted by the stopwatch (the wheel will be locked!). Selecting "CE" will reset the stopwatch to zero.
I used surface mounting (I prefer to bend the legs of the mikruha and put them on the contacts, even if it is DIP), an optocoupler (contacts on the scarf for soldering wires), I made resistors for each segment (the diagram shows it differently, there is one for each symbol common resistor).
Fuses included: CKSEL0, CKSEL1, SUT1, CKDIV8. SEW THE CONTROLLER SEPARATELY, the scarf is designed for 3 volts!