Day-Light Sensing LED Light [closed]

You have two simple possibilities:

1. Trane xl80 has power but no led light?

Do you have a digital multimeter (as low as $8 shipped) to diagnose the problem? Or call HVAC tech. Probably you spent more than $8 on the transformer. Spend your money wisely. .

2. How to use led light's?

You use a microcontroller and LED matrix interface ICs (they allow you to connect a multitude of LEDs to a microcontroller, with only a few I/O lines from it, freeing the controller from matrixing itself. To match music, you need analog filters or a DSP, to determine beat or other signals to trigger visual events.

3. i had problem on my pc, my cpu run, but i cant see anything, the led light of my monitor is orange,?

Monitor Troubleshooting When troubleshooting a monitor it is very important that the monitor cable is plugged into the computer (video card), and that the power cord is plugged into an active power outlet. My monitor is turned on but all I get is a black screen, what do I do? There should be an indicator light (LED) next to the on/off switch on the monitor, the light will be either green or orange or it will not be emitting any light. o If the indictor light is green this means the monitor has power but is not connected or is not receiving a signal from the computer. Possible solutions: Make sure the monitor cable is fully plugged into the computer. Try turning the monitor on and off, with various combinations of turning the computer on and off; DO NOT TRY THIS MORE THAN A COUPLE TIMES. o If the indicator light is orange the monitor is in power save mode, move the mouse or keyboard, or turn on your computer to bring it out of power save mode. Possible solutions: Make sure the power outlet is active and the cable is fully plugged into both the monitor and power outlet. If the monitor uses a type of cable that plugs into the computer to receive power, try using a regular power cable to test if part of the power supply on the computer is bad.

4. on my hp pavilion dv7-6143cl laptop led light on touchpad is not on?

try fn space. you want the back light to come back on right?

5. I want to run a 13 watt led light off of a car battery how big of a battery do I need to run them for 2 days?

P = IE P/E = I 13/12 = 1.083 amps There are 48 hours in two days. (1.083A)(48 hr) = 51.99 AHr So, you need 60 AHr worth of batteries. That could be one battery or a few in parallel. Note that this is an approximation. A fully charged car battery is about 13 volts and the voltage will drop as it discharges. But the calculation should be close.

6. Witch led light bulb would be brighter?

What Violet said. I will add that it depends on where you want the light to go, so design carefully

7. My Blackberry 9300 wont turn On with Red LED Light Flashing thrice then followed Once repeatedly?

It's cause blackberries are pieces of sh**

8. I need LED light strings to sew on a costume. Anyone know where to buy them online?

Costume Led Lights

9. how many volts does a 5mm led light use?

All 5mm LED's operate on 20ma. A current limiting resistor should be used when lighting LED's in most applications. To find the correct resistor subtract led working voltage from your source voltage then divide by .02 for 20ma, use a resistor equal to that amount or greater, do not use a smaller resistor.

10. How do i get my LED light on my blackberry curve to turn pink, purple, blue & other colors?

THeres a free version of "who is it" and a paid.

11. In Ubuntu GNOME, switching the keyboard layout lights the LED light

It is normal. It was set by ubiquity installer (or during upgrade) in /etc/default/keyboard.I guess you should change toThen update initramfs with sudo update-initramfs -u -k all (to change this in console sessions) and reboot

12. Is the Sally Hansen LED light for gel nail polish the same....?

If it's a gel polish, it will dry under uv light, try any combination you like, even normal polish. tips: thin coats or it will wrinkle normal polish does not benefit from uv light