Archive for July, 2014

How to Make a Rectangular Infrared LED Floodlight

How to Make a Rectangular Infrared LED Floodlight

A rectangular infrared LED floodlight is can be created using infrared LED light strips. LED light strips are rows of LED lights. These strips make connecting multiple LEDs simple. The rectangular flood light can be as large as you like and can contain as many LEDs as you like. LEDs are inexpensive, consume little power, emit little heat and are durable.

Instructions
1
Select a size for the flood light. Cut a piece of plywood to fit those dimensions. The entire piece of wood can be covered with LEDs.

2
Purchase infrared LED light strips. LED light strips can contain a few to hundreds of LED lights. Purchase enough light strips to cover your plywood rectangle. Measure out how many LED light strips it will take to cover the entire piece of wood.

 

3.Super glue the LED light strips to the wood. Ensure there is enough room to run each light strip wire to the control unit. Drill a hole right where the LED wire meets the wood, then fish the wire through to the back of the wood. The hole can be very small (1/4 inch.) This will keep the front of the LED floodlight free from wires. Wait for the super-glue to dry. The front of the LED floodlight should be covered in LEDs.

4
Attach all the LED wires to the LED control unit. This control switch will turn the flood light on and off and will either be powered by batteries or from an outlet; depending on which model is purchased.

 

Read more : www.ehow.com/how_7877283_make-rectangular-infrared-led-floodlight.html

What Do You Do When the LED Light on an iPhone Goes Off?

What Do You Do When the LED Light on an iPhone Goes Off?

The iPhone 5 running iOS 7 comes with an LED backlight that affects the visibility of everything on your screen. When the backlight goes off, don’t rush off to the nearest repair shop before you attempt some simple remedies to fix the problem yourself. Often, you can turn the backlight back on yourself by checking your settings, rebooting your iPhone or resetting the device.

Brightness
The brightness level on your iPhone might not provide enough light in direct sunlight and other situations where the phone gets exposed to large amounts of light. Try taking your iPhone into a dark area and manually adjust the brightness setting. If, after moving into a darker area, you can see the contents of your iPhone again, select the “Settings” app and adjust the slider in the Brightness and Wallpaper section. This can help you regain visibility in situations where you need a brighter LED.

Battery Issues
Sometimes your iPhone display goes off because of a low battery. Toggle the ringer switch on the side of your iPhone to see if the iPhone vibrates. If the iPhone vibrates, it’s possible that you need charge your iPhone. If you can’t get your iPhone to turn on at all, try connecting your device to the wall charger for at least 15 minutes. Charging your iPhone using a computer or portable charger doesn’t provide the same level of charge that the wall charger provides. If this still doesn’t work, try using a different charging cable to ensure that you don’t have a faulty cable.

 

Call Issues
Try removing any protective casing that you placed on your iPhone, clean the screen and then restart your iPhone if the display remains black after you finish a call. If you can see a screen when you receive a call, but then the device goes black, check to make sure that you didn’t enable the mute or speaker option before taking your next call. During the call, place your hand over the top third of the display to verify that the screen locks or sleeps.

Image Issues
If the display goes blank when trying to play a video or suddenly goes off while using the device, attempt to reboot your iPhone. Hold the power button until the red slide to power off displays. Swipe the slider to shut down your iPhone. When it shuts down completely, power the device on again. If that doesn’t work, attempt to reset the device by holding the “Sleep/Wake” and “Home” buttons for at least 10 seconds. Release the buttons when you see the Apple logo.

Restore Your iPhone
When you have tried all other options to fix the backlight, try restoring your iPhone. Restoring your iPhone deletes all of the information on your device, so you should connect your device to your computer and create a backup with iTunes. Once you created a backup, select the “Restore iPhone…” button in iTunes. This option also creates a backup of your data before restoring the device. Click the “Restore” option and then use the previous backup to set up your iPhone again, once the restore process completes. If you continue to have issues, take the iPhone in to a repair specialist to diagnose issues that you shouldn’t attempt to repair on your own.

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How to Make LED Grow Light Panels

How to Make LED Grow Light Panels

There is a lot of discussion about using LED lights for growing seeds. People get very technical and measure the amount of different kinds of light given off and the amount of current needed and so on, but this is a very simple solution that even a kid could make. Gather your supplies, and you can make your own grow light panel in about 30 minutes.

There is a lot of discussion about using LED lights for growing seeds. People get very technical and measure the amount of different kinds of light given off and the amount of current needed and so on, but this is a very simple solution that even a kid could make. Gather your supplies, and you can make your own grow light panel in about 30 minutes.
Other People Are Reading
How to Build a High Power LED Grow Light How to Build Your Own LED Light Panel
Things You’ll Need
Suspended ceiling panel
Drill and bit
2 strands of LED Christmas lights, red and blue
Show (2) More

Instructions
1
Mark 50 holes in the ceiling panel, five rows of 10 holes each, about 1/4 inch wide. Leave a 6 inch space around the outer perimeter and drill the holes every 3 1/2 inches. Use a portable drill to drill the holes.

2
Poke the lights through the back of the panel so that the tip of the lights protrude through the surface. They should be a snug fit. (Don’t try pulling the lights through or you may risk the chance of ruining the bulbs.)

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Hot glue the cord to the panel on both sides of each hole so that it sits securely.

4
When the first strand of lights is used, plug the next into the end of the first one and skip a hole. Glue the plastic portion of the plug to the panel to keep it from sliding around. Continue pushing the rest of the lights into the holes.

5
Drill two holes on either end of the panel to hang a mounting rope. Slide a 6-foot section of the thin rope down through the top and up through the other hole. Knot the ends together. Do the same for the other side.

6
Hang your grow light from hooks mounted over your seedlings. Plug it in and watch them grow.

 

Tips & Warnings
Do not use this method for regular Christmas lights as they generate too much heat.

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How to Switch a Mobile Home to LED Lights

How to Switch a Mobile Home to LED Lights

Many homes, including mobile homes, still use incandescent light bulbs. These bulbs use a large amount of energy and most likely you are going to be stuck changing out a dead bulb in each room at least once a year (depending on how much you use the bulb). However, if you want to save money on electricity and avoid changing out bulbs you can upgrade your current incandescent light bulbs to newer, more energy efficient LED lights.

Instructions
1
Purchase LED light bulbs that produce the same amount of light as your current incandescent bulbs. When looking at bulb packages, it is going to state the wattage brightness it produces and the wattage it actually uses. For example, some 60 watt equivalent LED lights actually only use 12 or 15 watts.

2
Unscrew the current incandescent light bulbs from your home sockets; make sure the light is turned off before doing so.

3
Screw in the replacement LED light bulb. Repeat this process with all the bulbs in your house into you have switched all the lights in your home to LED.
Tips & Warnings
LED light bulbs are available in a few different locations. Your local grocery store is likely to carry these products, but you are going to find a wider selection at a hardware store. In addition, a local electronics store may also have a limited supply of the light bulbs.

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How to Make LED Christmas Lights Blink

How to Make LED Christmas Lights Blink

Light emitting diode, or LED, Christmas lights last longer than traditional incandescent bulbs, are energy efficient and better for the environment, according to ChristmasLightsEtc.com. They can be used as both indoor and outdoor decorations. LED lights come in a variety of shapes and sizes. Their shine is brilliant as they distribute light more evenly than traditional lights. They may cost more than traditional incandescent bulbs, but they will last longer and save you money over time

Instructions
1
Take out your string of Christmas lights and untangle if necessary. Plug them, one string at a time, into an electric outlet and look for nonworking lights. Remove them and replace with working bulbs. Connect the lights together that you are using, sometimes what worked as a single strand does not work connected to other strands of lights. Repeat the process of finding and replacing until the entire string of lights work.

2
Find the extra LED lights that you have set aside and find the one with a red mark on the end. This is the light that will make the string of lights blink. Place this bulb in the first section of the string of lights. Notice if there is a place on the string where the lights stop blinking. Take the bulb out at this place and replace with a red-marked LED bulb. You should then see the lights begin to blink. The beginning of each string of lights will need a red-marked LED bulb.

3
Purchase extra LED bulbs, if you do not have any, at your local store. Find a package that has at least one bulb with a red mark on the end. You may need to purchase more than one package depending on the amount of lights you are using for decorations.

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How to Make a Flickering Light With an LED

How to Make a Flickering Light With an LED

LEDs (light emitting diodes) have replaced incandescent bulbs for creating effects in theater and stage play productions. You can build an electronic circuit that will make an LED flicker so that it can be used to create the effect of a flame in a fireplace. A few parts from an electronics supply shop and experience with a soldering iron is required, as is adult supervision, if the person making the electronic circuit is underage.

Instructions
1
Place newspaper down on a work surface. Straighten the two conductive pins on the bottom of the red LED with needle nose pliers.

2
Cut two 6-inch pieces of electric wire with wire cutters. With wire strippers, strip off a half inch of insulation, measured with a ruler, from each of the ends of the two wires.

 

Solder the end of one of the wires to one of the two contacts on the resistor. Let the solder cool for a minute.

4
Solder the other contact on the resistor directly to the short pin on the red LED. Let the solder cool.

5
Solder one end of the other wire to the long pin on the red LED. Let the solder cool.

6
Wrap electrical tape around the pins of the red LED and the contacts on the resistor.

7
Solder the free end of the wire connected to the resistor to the contact labeled “positive input” on the DCx16 circuit board. Let the solder cool for a minute.

8
Solder the free end of the wire connected to the red LED to the contact labeled “negative input” on the DCx16 circuit board. Let the solder cool.

9
Solder the black wire from the 3-volt battery holder to the positive contact on the DCx16 circuit board. Let the solder cool.

10
Solder the red wire from the 3-volt battery holder to the negative contact on the DCx16 circuit board. Let the solder cool.

11
Insert two AA batteries into the 3-volt battery holder. Watch the red LED light up and flicker on and off.

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How to Attach LED Lights to a Battery

How to Attach LED Lights to a Battery

Light emitting diodes (LEDs) are low-voltage, long-lasting lights that can be easily charged with a battery. This is a safe way to power LEDs because the battery is a low-voltage instrument. When attaching LEDs to a battery, ensure that the combined voltage of the LEDs is not exceeded by the battery’s voltage, or the lights will blow out.

Instructions
1
Check the voltage of your LEDs. LEDs are wired in parallel, so you only need to read the label on one to determine the voltage needed to power them by your battery. Be sure to use a battery that has the same or similar voltage to the LEDs.

2
Remove one-quarter inch of plastic covering from the ends of the two wires from the LEDs, using wire strippers. If you need to wire the LED lights and the battery, cut a strip of dual-core 18 AWG using a knife. Remove about 2 inches of outer plastic from the ends of the wire, using wire strippers, and then remove one-quarter inch of plastic from the two internal wires at both ends.

3
Attach one of the wires from your LEDs to one of the battery terminals. Which one doesn’t matter. Use a strip of insulating tape to attach the wire to the terminal. Repeat the process for the other wire from the LEDs by attaching it to the other battery terminal. If you need to attach the lights and battery to the wire, use a strip of tape, and connect the two wires on the end of the wire strip you cut to the two terminals on the LED. Attach the two wires on the opposite end to the two battery terminals, using tape. Your LEDs will illuminate.

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How to Design an LED Light Circuit

How to Design an LED Light Circuit

Designing an LED light circuit is an excellent beginners electronics project and an easy way to decorate for the holidays. LEDs are light emitting diodes that take only a small amount of power to give off light. Make an LED light circuit by twisting the wires from the LED to the electrical posts on a battery bay or even to the battery itself (though it is easier to replace the battery if you use the bay).

Instructions
1
Place the battery bay down on your workspace so that the opening faces up. The size and type of battery bay depends on how long you want the light to last. Because LEDs use so little power, a simple AA bay will last for weeks. If you are going to use this LED circuit as a decoration, use a small battery bay to minimize weight and bulk.

2
Determine how many lights you want in the circuit. A rough rule of thumb is that you need one AA battery for every five LEDs. Using more than that means the batteries get run down faster. Place that number of LEDs in line on your workspace. Twist the metal wires coming from the LEDs together so that the LEDs form a strand, with the wires at the end and beginning of the strand left untwisted.

 

Wrap the twisted wire pairs in electrical tape. Use three layers of tape, ensuring that no bare metal is visible. This ensures that the LED wires won’t short out on each other or on any errant pieces of metal they might touch. Twist the bare metal wires at the ends of the LED strand to each of the electrical posts on the battery bay. Wrap the electrical posts in electrical tape as well, using three layers to ensures proper coverage. Put batteries in the battery bay to check that the LEDs light; if not, re-twist the connections to ensure a good connection. Take the battery out whenever you want to shut off the LED light circuit.

4
Cut a length of wire off a wire hanger with a wire cutter. The length should be as long as your LED strand because it will serve as a structural backing. Place the hanger wire along the LED strand and bend the hanger wire to match the curvature of the LED strand. Tape the wire to the LED strand with the electrical tape. This now allows you to hang the LED light circuit without having to worry about the weight breaking the connections.

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How to Make a 12-Hour LED Solar Light

How to Make a 12-Hour LED Solar Light

A solar panel that is hooked up correctly and placed in bright sunlight will power an LED light very nicely. However, for all its sun-harnessing power, the light will stay on only when your solar panel is in full view of a bright source of light. If you want to keep the LED on for 12 hours after darkness falls, then you need a few cheap parts and a little technical knowledge.

Instructions
1
Thread the leads of the solar panel through the circuit board and solder its positive (red) lead to the nonringed end of the blocking diode.

2
Solder the ringed end of the diode to the positive lead of the battery pack.

 

3.Wrap and solder the negative lead from the solar panel around the negative lead on the battery pack.

4
Attach and solder the positive, nonringed end of the resistor to the positive lead of the battery pack. Solder the negative (ringed) end to the negative terminal of the LED.

5
Solder one end of a short length of copper wire to the negative battery pack terminal and the other end to the marked “Off” position on the switch.

6
Solder another length of wire between the “On” position of the switch and the LED’s remaining terminal. Allow all solder to cool and harden for at least an hour.

7
Place your construction in bright, consistent sunlight for several hours to charge the battery pack. Make sure the switch is off or your LED will be burning energy while charging.

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How to Use a 9V Battery for a 3V LED

How to Use a 9V Battery for a 3V LED

LEDs are light-emitting diodes that emit light when electricity is applied, similar to a light bulb. LEDs are part of a group of lighting technologies called solid-state lighting and come in multiple styles, colors and light temperatures. LEDs provide greater energy efficiency than both incandescent and fluorescent lamps, and have a longer life cycle. A standard 3-volt LED lamp can be connected to a 9- volt battery, provided that a current limiting resistor is connected between the battery and LED.

Instructions
1
Calculate the value of the resistor needed by dividing six volts by the LED ‘s current requirement in amps. The value calculated will be the resistor value in ohms. Use a resistor as close to this value as possible. Six volts is the remaining battery voltage across the resistor when there is three volts at the LED.

2
Solder the the positive wire of the battery connector to one lead of the resistor. Solder the remaining resistor lead to one connection on the switch.
3.
Solder the positive lead of the LED to the remaining switch connection. Solder the negative lead of the LED to the negative wire of the battery connector.

4
Verify that the switch is in the “off” position. Connect the battery connector to the 9-Volt battery. Turn the switch to the “on” position and verify that the LED illuminates.

 

Tips & Warnings

Always verify all connections are correct prior to applying power to the LED

 

Use caution when soldering – irons are hot and can cause burns.

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