How to make a bracelet glow in the dark. Luminous bracelets how to charge. To get purple dye you will need
By
Christmas tree LED star powered by two AA batteries
In the distant past, this Christmas star was made on the basis of a control logic decoder, transistors and LEDs. Now, many years later, this project has been re-implemented using modern technology, including a microcontroller, a DC/DC voltage converter, and a constant current LED driver.
For its power, the project uses two AA batteries, so you need to use a DC / DC voltage converter, since the blue LEDs have a forward voltage drop of just over 3V, and the LED driver chip is about 0.6V. Two new AA batteries provide just over 3V, and rechargeable batteries, even when fully charged, cannot provide enough potential. To eliminate this problem, a voltage converter is used, which converts the nominal 3V from the batteries into the 3.71V required for operation.
The microcontroller can be powered by DC/DC converter voltage or directly from batteries. Also, the microcontroller can turn off the DC / DC converter during sleep mode to save battery power, in this mode, the converter consumes about 1 μA. The PIC16LF1703 microcontroller itself works reliably up to 1.8V and is very economical in power consumption, especially in sleep mode.
The LED driver receives SPI commands from the microcontroller and, based on them, turns on certain LEDs. The microcontroller software uses a standard machine architecture to output animation.
This small Christmas project contains 16 LEDs in two different colors mounted on a PCB in the form of a star. The LEDs are controlled individually by a microcontroller which is programmed with several operating modes to create good visual effects. Since the electricity consumption is not large, the star can continuously work for at least one day.
The choice of using conventional LEDs is due to their small size compared to SMD LEDs. The LED driver provides a constant current of 5mA to the LEDs.
The microcontroller performs 3 main functions:
Sends SPI commands to the driver to turn the LEDs on and off. Monitors the voltage of batteries or accumulators, if the voltage drops below the allowable value, then it puts the DC / DC converter into sleep mode. Processes signals from an external button. Using an external button connected to the microcontroller, you can change the operating modes of the LEDs, change the display speed, and also put the star into sleep mode.
The figure below shows the complete electrical circuit of the star:
The figure below shows the architectural scheme of the software, and the scheme of its dynamic behavior:
System design and LED control principle
The LED driver is driven by 16-bit SPI packets, in one such packet, each bit corresponds to one LED. When a certain bit is equal to one, then the corresponding LED turns on, when it is equal to zero, then the LED turns off.
bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
LED
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
To create a sequence, packets of bits are sent to the LED driver at a predetermined interval. The base period is 62ms. It can vary from 81ms to 81*255ms.
For example, a program that cycles LEDs around in time looks like this:
When creating the project, the following electronic components were used:
TLC5925IDWR LED driver PIC16LF1703-I/SL microcontroller MCP1640T-I/CHY DC/DC converter Battery compartment 22uF capacitor 27pF capacitor 4.7uF capacitor mm, blue and red LEDs 10 mm, yellow and red By hackaday
Silicone bracelets are modern accessories that complement the image of a person. In addition, these products are very often used during various social events. Many business owners use them as an effective advertising tool. Now luminous silicone bracelets are in great demand. They are bright and stylish, so everyone will like them. It is difficult to do without them if it is planned to hold some kind of social event, including sports competitions, charity gatherings, discos, concerts, etc. These accessories are quite appropriate in everyday life. They can act as a keychain, as a result of which a person can quickly find and not lose the keys in the dark.
Why order Luminous Logo Printed Silicone Wristbands from us?
Recently, luminous ones with a printed logo have become very relevant. You can order such products in bulk in our company. We offer a wide range of these accessories. You can buy men's and women's silicone bracelets from us. They can have a variety of color shades. We stock only high-quality and reliable products, which are characterized by a long service life and excellent performance. The bracelets offered by us are manufactured using proven materials. They have environmental safety, since they do not contain any harmful impurities. And this means that allergy sufferers and children can wear such bracelets. In addition, these attributes are famous for their resistance to fading, the negative effects of salt and fresh water. As mentioned above, our company carries out the application of the logo on these accessories. It can be a symbol or contact details of the company, the name of a sports team, or just an interesting drawing. For applying the image, we use only reliable materials, so it is not erased and does not lose its clarity even with regular use of the bracelet. All actions in our company are carried out with the help of modern equipment, due to which all sorts of errors or defects are completely excluded.
The role of luminous silicone bracelets. Scope of accessories.
Why have silicone wristbands that glow at night become popular? Such accessories are in demand for the following reasons:
1. They can be used as an effective promotional product. To do this, they should put the logo or contact information of the company on them. Such products are ideal as a beautiful and interesting present for business partners, regular or future customers.
2. To quickly open the front door at night, you should purchase silicone key bracelets. Thanks to the glowing effect, finding them will not be difficult. Moreover, during the opening and closing of the bag, they will not fall out, and even if this happens, the person will soon notice them.
3. Such accessories can be used during a children's event. Bright silicone bracelets are sure to delight children. They are easy to put on the hand and do not compress the wrist. These products consist only of high-quality materials, therefore they are completely safe for children.
4. Sometimes glow-in-the-dark silicone wristbands can come in handy when traveling to sparsely populated places. This is especially true when a group of people goes on a trip. They will be a real find for those who have lost their group. Travel company owners are advised to purchase these accessories in bulk and give them to their customers before the trip. Thus, they will form a positive opinion about themselves and cause resentment among competitors.
5. It is sometimes very difficult for some athletes to do without silicone bracelets with a printed logo. Sports silicone bracelets indicate to which team this or that participant of the event belongs.
6. These attributes are very often used in nightclubs. It is by them that you can determine the person who did not pay for the entrance. In addition, these bracelets glow in the dark, which creates a truly enchanting atmosphere. With the help of these devices, it will be much easier for security guards to monitor from a distance what is happening on the dance floor and how the guests of the establishment behave.
7. Silicone bracelets are widely used at charitable gatherings. They help to identify the participants of these events, making it much easier for outsiders to find them. Such bracelets are marked with the name, symbol or contact details of charitable organizations.
Who can apply to our company?
You can wholesale order luminous silicone bracelets with a logo in our company. We employ only highly qualified specialists who quickly and efficiently perform their duties. Special equipment and reliable materials are used to apply the logo. All bracelets sold in our company are famous for their reliability, environmental safety and stylish design. Such products are very practical and convenient during operation, since silicone is elastic. Owners of companies can use the services we provide. With these bright attributes, they will be able to advertise their company and attract new customers. Organizers of all kinds of social events can also buy wholesale luminous silicone bracelets from us. It is extremely difficult to do without such accessories in nightclubs, political events, charity gatherings, etc. Even people involved in the sale of goods can buy these products in bulk from our company. By ordering a luminous silicone bracelet from us, the entrepreneur will be able to make the offered products exclusive. An interesting image on the bracelet will attract the attention of many buyers. In the future, they will be able to use this accessory as a keychain or just a stylish decoration.
Luminous bracelets are sold in the form of sticks. The advantage of these decorations is that they do not require batteries, they just need to be put on and go into the dark.
You can use the original decoration at home, on the street, in a club and other places, while you can absolutely not be afraid of any fires and other troubles. This is a completely safe device, unless you try to break it and try the contents.
Of course, luminous bracelets are also used by adults, but they give special joy to children. You can buy glow sticks in specialized stores, and now they have appeared in small retail outlets with other goods. Each stick is twenty centimeters long and 5 millimeters in diameter. Special locks on the ends of the sticks provide comfortable and secure wearing of the accessory. At the same time, the versatility of the lock connectors makes it possible to fasten them together. Thus, multi-colored beads can be created from several sticks.
What are glowing bracelets made of?
The question of the composition of colorful jewelry is of great importance, since it is worn on the body. Poor quality products can cause allergies. Luminous bracelets should consist of plastic, the cavity inside of which is filled with a special liquid, which, when mixed with certain reagents, forms the same light of different colors.
That is why, in order to get a uniform color, you just need to shake it so that the reagent is distributed evenly inside the plastic flask. Accordingly, all colors are quite natural. Glow in the dark bracelets can not only serve as a bright accessory, they can also bring practical benefits. For example, you can put it on your child in the evening before a walk in the yard, and he will always be visible in the dark.
How to charge luminous bracelets?
There are many suggestions on how to extend the life of the bracelet. However, keep in mind that manufacturers guarantee a glow for 12 - 24 hours, depending on the quality of the accessory.
The stick will emit light only as long as the reagent contained in it is active. Therefore, to activate the light, you can simply crush the bracelet, bend it in different directions, this will speed up the reaction, and the light will become brighter.
There is also an opinion that to charge the bracelet you need to put it in the refrigerator. But this will only help to stop the reaction during daylight hours. To do this, the bracelet should be put in the refrigerator. And when you need it, just take it out and let it warm up.
In principle, bracelets are considered disposable. At the same time, their cost is not so high. You don't need a lot of investments to buy one bracelet. In addition, very often they are sold in sets, which include products of different colors.
Thanks to all its advantages, this decoration will probably not lose its popularity among adults and children for a long time.
AND HIS
↓ Where can glow sticks be used? ↓
An excellent attribute for various festive events such as festivals, parties or corporate events. They can also be used in tourism, while hiking, hunting, fishing or diving for signaling in emergency situations. Indispensable in the absence of other light sources and in cases where conventional sources are not suitable (for example, during gas leaks)
↓ Why do neon sticks and other chemical light sources glow? ↓
↓ What is the duration of the glow of the CHIS ↓
The duration of the glow of chemical light sources directly depends on 2 factors - the structure and number of components inside and the ambient temperature. The smallest glow sticks glow for up to 2 hours, while the largest ones glow for up to 12 hours. There are special glow sticks with a very bright glow, but its duration does not exceed 10-15 minutes.
At temperatures close to 0 degrees Celsius, the reaction either completely stops or is very slow - accordingly, the glow is either not observed at all or very dim ... but for a very long time. In hot weather, or when the glow sticks are heated, the brightness increases, but the glow time is reduced.
There is also a phenomenon called AfterGlow, i.e. after-glow, which in some cases can be observed in complete darkness and 2-3 days after using glow sticks.
↓ How to "recharge" glow sticks? ↓
Chemical light sources are disposable - once activated, their process cannot be stopped, it can only be slowed down. In this connection, a common myth arose about the possibility of "recharging" glow sticks by putting them in the freezer.
In fact, the reaction inside just slows down to almost a complete stop. Thus, it becomes possible to use activated sticks several times for 1-2 days.
↓ How long do chemical light sources last? ↓
The shelf life of non-activated glow sticks is 3-4 years, subject to the storage rules: no exposure to direct sunlight, temperatures below 0 and above 35 degrees Celsius. The optimal mode for storage temperature is from 10 to 20 degrees Celsius in a dark room
It must be taken into account that even short-term contact with sunlight reduces the shelf life to several weeks.
↓ How to activate the glow stick? ↓
Most chemical light sources are activated by bending, causing the contents to mix and react. After that, you can sharply shake the glow stick several times to get the maximum amount of light and all the substance inside has entered into the reaction.
Do not bend the glow sticks excessively - just bend them slightly and you will hear a characteristic crack (this is a sign that the inner vessel has broken and its contents have mixed with peroxide).
↓ What are the conditions for using glow sticks? ↓
Chemical light sources can be used in almost any weather conditions, because. they are dust and moisture resistant. The exception is low temperatures. The visual perception of the brightness of the glow depends on the intensity of illumination from other sources in a particular place.
Optimum glow is observed at temperatures above 10 degrees Celsius in the dark or twilight in open space and in any dark places. They are not able to compete with the brightness of the Sun or stage spotlights, so the glow will not be noticeable in clear weather and only slightly noticeable in cloudy weather.
↓ Are glow sticks safe? ↓
When used properly, chemical light sources are completely safe. The chemical components are non-toxic, not flammable, but they burn in fire, of course. The environmental impact is comparable to plastic cups or plastic bags.
WARNING. Avoid excessive and multiple bending of glow sticks - they are durable, but not immortal. This is the only reason for the violation of the tightness of the shell, except for its deliberate damage.
Make sure your kids follow this simple rule, and don't let them chew on the glow sticks.
↓ What should I do if the contents of glow sticks get on my body or clothes? ↓
Compliance with the rules described in the previous paragraph prevents this possibility by almost 100%, while not excluding the possibility of factory or shipping damage.
A sign of shell leakage is a characteristic smell and the presence of a slightly oily liquid in the package or on the glow stick itself.
If the contents come into contact with clothing, try to wash the contaminated area in warm water and detergent as soon as possible. If it dries, it may leave a permanent stain.
If liquid from glow sticks gets on your skin, wash it with warm water and soap. In rare cases, with increased allergic sensitivity, slight skin irritation may occur.
Contact with the contents of chemical light sources in the eyes causes burning and irritation of the mucous membrane - in no case do not rub and immediately rinse the eyes with plenty of warm water.
If by chance the contents of the liquid got into the oral cavity or were swallowed, rinse your mouth. An allergic reaction may occur, and with large quantities swallowed, poisoning. Although somehow the cat of one of our clients ate almost 3 luminous bracelets and remained alive))
Crafts made from luminous objects are very popular among foreign craftsmen. In our country, on the contrary, this type of skill is gaining momentum in popularity. We will tell you how to make glowing objects, and you will be one of the first to make glowing objects. Also read how to do it.
To make crafts you will need:
- fluorescent paint;
- electric luminous cord;
- multi-colored LEDs;
- subject to be illuminated.
Glowing bracelets in the dark
For manufacturing, you will need a cord and a special fabric - organza, which transmits light well. This fabric will give the bracelet a mystical look.
Let's make a frame for the bracelet. Take a thick wire, then file the ends so that they do not hurt your hand. After that, put on an electric cord over the wire. And at the last stage of manufacturing, we sheathe with organza fabric. We sew it so that there is a hole at the end of the bracelet through which the electric cord can be charged. For example, you can sew a fastener in the form of a button.
“For reference: the luminous electrical cord is powered by a battery. Therefore, it needs to be taken out and charged from time to time.
Luminous HI-FI cassette
Take an old cassette. Surely you will find it, because it was used many years ago.
Disassemble the cassette, unscrew the screws and pull out the tape. Then, in place of the tape, insert the electrical cord.
Luminous Nike sneakers with luminous soles
This subspecies of craftsmanship is more popular in street culture circles. To make glowing sneakers, you need a fluorescent solution. Instead, you can buy textile paint and mix it with a luminescent pigment.
Pull out the laces and paint the sneakers. Do not forget to process the laces too. Everything is very simple. If you paint without removing the laces, then in some places the paint will not glow. It's obvious :-)
You can also stick a tape imitating a bicycle photo reflector over the applied paint for an irresistible effect.
