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2014年9月1日星期一

How to Solder an LED Bulb

Light emitting diodes (LEDs) are quickly becoming one of the most efficient sources of light. Their long-lasting life, coupled with their low power consumption, proves them to be a very effective light source for the home and other places. If you want to create your own LED lights, you can solder the bulbs yourself.

Instructions
1
Prepare the soldering iron for use. Whether you have a new soldering iron or you are using an old one, you will need to "tin" the tip of the soldering iron by coating it in solder. Plug in the soldering iron and allow it to heat up. Coat the entire end of the soldering iron with solder, which will allow the solder to transfer to your project more smoothly later.

2
Prepare the surface of the circuit board. Clean the surface of the circuit board using a Scotch Brite pad. This will rid the surface of any dirt or impurities and provide a clean surface for the solder to stick to.

Place the LED on the circuit board. Insert the two leads from the LED into the pre-drilled holes in your circuit board, in the location where you want to have the LED. Bend the ends of the two leads slightly, from the bottom side, to prevent the part from falling over while you solder it.

4
Solder the LED in place. Heat one lead of the LED with your soldering iron. Do not touch the tip of the soldering iron to the solder directly. Touch the tip of the solder to the LED and allow the heat from the lead to melt the solder into the connection joint. Allow a small pool of solder to appear at the base of the lead, which will hold the LED in place. Allow this connection to cool for a few minutes and complete the other side the same way.

5
Inspect the joint. Ensure that the solder has fully connected the LED to the circuit board and that there are no loose connections. If you find a loose connection, simply reheat that soldered joint until the old solder melts. Remove the old solder from the joint with a wet rag and re-solder the connection.

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How to Synchronize LED Lights With iPod Music

Lights that blink on and off in time with music are often used by dance clubs to excite the crowd. To create your own "light show" with the music coming from an iPod, use a music sync device. There are a number of these devices available from computer and electronics stores, and even hobby shops. These devices all work in a similar manner to control the illumination of lights in time with audio. Those that include LED lights as part of their makeup eliminate the need for any assembly work whatsoever. An audio speaker, however, will also be needed (e.g., an iPod music dock) in order for the iPod's music to be heard.

Instructions
1
Place the music sync device on a table. Stretch out the LED light modules attached to the music sync device so that they form an irregular pattern on the table. Plug the music sync device's power cord into a wall socket for power. Press the music sync device's power button to turn it on and supply power to the LED lights.

2
Place the speaker dock on the table. Plug its power cord into a wall socket for power. Insert the iPod into the speaker dock's iPod connector.

Aim the front of the music sync device, which contains the built-in microphone, toward the front of the speaker dock.

4
Press the power button on the speaker dock to turn it on. Press the "Menu" button on the iPod to bring up the menu. Select "Music" from the menu. Scroll down the list of choices on the screen and select a playlist. Press the "Play" button to begin playing songs from the playlist.

5
Press the "Volume +" button on the speaker dock to increase the audio volume. Continue increasing the audio volume until the LED lights of the music sync device begin to blink.

6
Adjust the fine-tuning knob on the music sync device to control the speed and intensity of the light's blinking. Turn the room lights off and enjoy the light show as the music plays.

Tips & Warnings
Music sync devices that rely on being plugged in to independent LED lights must not exceed the rating for the AC power of the device.

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How to Build a Grow Box With LED Lighting

Growing your own plants at home can be even more productive when you get them to grow inside in an organic grow box. With the advent of bright light emitting diodes, or LEDs, you can add intense light close to your seedlings without burning the plants. The construction of a grow box basically involves using a structure large enough to house your plants with extra space for air ventilation.

Instructions
1
Line a large box or plastic storage container with sheets of aluminum foil. Use a few beads of craft glue along the inside of the box to hold the foil in place. The foil will reflect more of the light around the plants than a box without foil.

2
Place a shallow tray in the bottom of the box to hold drainage water. This makes it easier to water the plants and keeps the bottom of the grow box clean.

3.Set your soil-free filled plant pots onto the tray, while leaving enough space between the plants for good air circulation.

4
Attach two rows of high-intensity white LED light strips to the bottom of the cover of the grow box. Some strips come with pre-attached adhesive while others require a few screws to keep them in place. Drill a hole through the side edge of the cover with a drill. To keep the hole small, drill the hole as large as the width of the cord and slice from the hole to the edge of the cover. Pry open the slit with a utility knife to slide your plug through.

5
Place the cover over the organic grow box. Plug in the LED lights to test. Remove the cover. Plant your seeds, add water and nutrients as needed per plant. Replace the cover on the box, turn on the LED lights and wait for the plants to sprout.

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How to Find If an LED Tail Light Meets Department of Transportation Standards

One of the key difficulties in car modification and repair is ensuring that your car is "street legal"--that is, it complies with all the standards and regulations for cars implemented and enforced by the U.S. Department of Transportation. Even a non-standard tail light can mean that your car can be taken off the road. With careful examination, however, ensuring your LED tail light meets government standards is a simple process.

Instructions
1
Go to an automotive parts store and examine the tail light you would like to install. The packaging will be clearly marked if the tail light is approved by the federal Department of Transportation. Also examine it for signs that it is a counterfeit part; such signs include misspellings on the packaging, bad grammar and incorrect contact information for the company. If you find signs of a counterfeit part, or no sign of DOT approval, assume it is not approved and investigate other brands until you find one that is DOT-approved and has no signs of counterfeiting.

2
Examine the specifications of the tail light and compare them to your state's specifications for tail lights. While it is likely the government and the state have very similar requirements, there may be subtle differences that may disqualify the light. If possible, ask to see a demonstration model of the part, or ask if there are cars at the shop with this tail light already installed so you can see it in action.

3
Install the tail light, and then test it to make sure it performs to both federal and state standards. Turn the wheel to the direction it is signaling in to see if it shuts off. Time the light to ensure it is not flashing too quickly, which may be a safety hazard for epileptic drivers. Ensure the light turns on and turns off smoothly with the use of the turn signal, and that it has been wired to the turn indicator on the dashboard. Look at the light at night and ensure it is bright enough to be seen but not bright enough to dazzle other drivers.

Tips & Warnings
Use only reputable auto parts dealers and installers. For local dealers, check sites like Yelp to find out more about their reputation and business. Local and national dealers will likely carry parts that meet state and federal standards.

Log on to the website of the company you are considering buying a tail light from. The site should note the part is DOT approved.

Counterfeit car parts are a major risk. If you have any suspicion that a part is counterfeit, do not install it.

Never install a car part yourself unless you know exactly what you are doing. If you are uncomfortable or uncertain, have a professional install it for you.

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How to Connect Power LED to a Motherboard

The power light emitting diode is a small light diode installed on the front panel of the computer case. If connected to the motherboard, the power LED lights up steady green when the computer is turned on, and starts to blink or lights in yellow when the computer goes into sleep mode. This LED is not important for the computer's functionality, but it allows you to easily identify if your machine is in sleep mode.
Instructions
1
Switch off the computer and disconnect the power cord on the back panel.

2
Open the computer case by removing the side panel. Then lay the computer on its side. Note that the motherboard is attached to the opposite side panel with screws.

3.Look for the system panel connector cluster that is in the bottom right corner of the motherboard. This cluster includes at least five different connectors, including a power switch, reset, a case's speaker, power and hard drive LEDs.

4
Consult the motherboard's manual and find out which pins in the cluster correspond to the power LED connector. The manual will have a scheme on which the polarity ("+" and "-") of the connection is marked.

5
Locate a computer case cable that goes from the power LED. This cable has a connector on the end that would fit into the pins on the motherboard.

6
Touch the metal surface of a large object to discharge static electricity before doing any work with electronic parts such as the motherboard. For example, touch an unpainted metal part of the computer case.

7
Insert the connector of the power LED cable into the corresponding pins (see Step 4) on the motherboard using a gentle force.

8
Close the computer case and power up your machine.

Tips & Warnings
Static electricity can severely damage the motherboard and other computer components. This damage is not covered by the manufacturer's warranty.

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How to Replace an LED Cat Eye Bike Light

Cat Eye LED bike lights are mounted on both the front and back of your bike so you can ride safely at night. These bike lights are easily replaceable should one of yours ever fail or should you just want a different model light. Learning how to replace a Cat Eye LED bike light can help you insure that your bike is equipped with everything it needs to keep you safe.

Instructions
1
Remove the light from the bracket fastened to your bike by pressing the red button located on one of the sides of your light to release it. You should be able to pull it forward gently and hear it click out of place. Don't try to force it if you intend on keeping the bracket.

2
Unscrew the dial on the bracket strap fastened to your bike and remove the light. You'll want to take this with you to purchase a new light to insure that the new light will fit in your bracket. If you know the bracket model and number, then you can leave it on the bike.

3.Purchase a Cat Eye LED light to fit the bracket you have on your bike. If you have an older model, you may have difficulty finding a light that fits, but ask the salesclerk if he can suggest a replacement.

4
Refasten your bracket around the front or back bars on your bike with the dial facing inward, looping it around the bar and back through the slot under the dial. Turn the dial clockwise to fasten. Slide your light into the bracket from the side opposite the dial until you hear a click that indicates it is locked in.

Tips & Warnings
Always read all instructions and safety warnings that accompany any new light you buy prior to installing the light onto the bike.

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How to Trim Home LED Net Lights

How to Trim Home LED Net Lights

Decorating the outside of your home with LED net lights for Christmas, or any other occasion, has many advantages over trimming your small trees and shrubbery with traditional string lights. Net lights are pre-configured to be evenly spaced when hung, as opposed to aligning string lights which takes a lot of time to space properly. You can purchase LED net lights in various lengths, enabling you to cover large portions of your home's exterior with ease.

Instructions
1
Unfold the LED net lights on a flat surface and spread them out so that you can easily see all of the lights.

2
Plug the power chord into an electrical outlet. Inspect the lights for any lights that do not light or other defects in the net. LED lights rarely burn out, but it is easier to know if there is a problem before you hang the lights.

3.Unplug the power chord and move the lights to the desired location. Locate the nearest electrical outlet. If there is no outlet readily available, use an extension cord long enough to reach the outlet. Make sure that the extension cord is rated for outdoor use.

4
Grasp the top edge of the net lights with both hands. Drape the net over the bush or other object. Arrange the lights so that the entire object is covered.

5
Plug the net lights into the outlet or extension cord. Inspect the lights and rearrange the net if desired.

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