LED CLOCK cum NIGHT LAMP

When I wake up in the middle of the night and want to know the time, I have to turn on my mobile to see the time. Now with this LED Clock cum Night Lamp I can just read the time off the wall. This clock is a piece of Art in LED designing, and it puts an Artistic touch to my bedroom. It is very simple to make and is cheap, but looks very expensive, like a piece of a big CUT DIAMOND. Watching it live is mind blowing.

People say necessity is the mother of Invention, so this idea came out of necessity.

I never thought placing LED along a flat surface could create such beautiful designs, and as the LED’s are not facing towards you but is laying on the surface, you do not get the light in your eyes. Experimenting with color LED you can create real work of Art.

Step 1 Items you will need

Items you will need for this project.

1.                  Hardboard 12”x12” one piece.

2.                  Wooden batten 12”x ½”x ½”. 4 pieces.

3.                  Some small Nails.

4.                  PVC stickers white 12”x12” One piece.

5.                  12 white LED’s 5mm.

6.                  Capacitor .22uf / 400 volts. One piece.

7.                  Resistor 1K/ ½ watt. One piece.

8.                  Diodes IN 4007 Two pieces.

9.                  Quarts Clock mechanism. One piece.

10.               Wires, solder, nails, etc.

Comments

[apervakov]

On 120ac the resistor is smoking, I put 1w resistor - the same picture. Why?

[Dipankar]

What is the value of the Capacitor you have put on 120VAC?

[apervakov]

4.7uF 250v. Also do you have any idea how to stick a photo resistor in this diagram without losing brightness on LEDs.

[Dipankar]

The Capacitor should be .47uf and NOT 4.7

for 120volts AC the Capacitor should be
0.00047uf or
0.47nf or
470pf.
all 250 volts.

[apervakov]

What formula did you use to find out the data? Also what about the photo resistor?

[Dipankar]

I am not an electronics engineer, I use data given to me by an expert who is well qualified.

For 220VAC use .22uf / 400volt with 1k 1watt resistors.
For 110VAC use .33uf to .47uf / 250Volt with 1k 1watt resistors.

as for photo resistor I have never used them, can't help in this regard.

[apervakov]

I just thought that might be very cool to have the wall clock dim at the sunrise and light up on sunset, to add some automation to it. What do you think, can you ask your expert?

[Dipankar]

My advice is don't go into complication, just switch ON and switch OFF WHEN REQUIRED.
My expert is qs he is a Pro member, ask him.

[apervakov]

Do you have a link to the page where I can ask him? Thank you.

[Dipankar]

Here it is.........
Web Site
http://quantsuff.com

[apervakov]

That is great. Thank you.

[btmnet]

Hi, Can i mix with white and red leds?

[Dipankar]

YES you can mix white LED's with any color.

[alan92]

hey those black lines in the gap between the two led's should be connected to the negative terminal........or just interconnection........................and also the black line that is connected in the positive terminal of the battery.......................

[badcoconut]

Alan92 I'm confused at what you're pointing out? Black line to Battery?? I thought this was an AC circuit?

[Dipankar]

There are NO Batteries in this Circuit.
Only Capacitor, Resistance and Diode.

[rahulvfx]

did anyone tried this ... First of all those black line is confusing.. and what is negative and positive? I guess this was a AC circuit.. Anyways I tried this circuit skipping the black line, but the circuit blown my total house power supply.. Thankfully only the MCB got shut...

[Dipankar]

Even AC has a Phase and Neutral. The Phase is shown as RED and the Neutral has been shown as BLACK.
Likewise in a LED the long leg is Positive and the short leg is Negative.
Ignore the colored lines but maintain POLARITY, which is important.

[tobyscool]

I want to make one but i still have exams :(
need to study

[Dipankar]

Finish your Exams first then make this ..... OK

[tobyscool]

done with exams last day today :D

[2muchfreetime8]

(removed by author or community request)

[mweston]

*sigh* Somebody doesn't know their Latin...

[Sin Kelevra]

"Cum", is used to indicate that something has two functions, uses, or has been changed into another object.
It is from the word in Latin meaning "with", but it's one of the words English borrowed and uses. Not trying to make you seem wrong, just pointing it out.

[Dipankar]

Thank you.
Here I meant two functions.

[Wesley666]

HAHA! I love it when people screw and don't realize it!

[zascecs]

whoah! that's real weird...

 I think you missed out on the "up" in your sentence. o_O 

Apperently, you're also part of that group of people...

[Wesley666]

Who is to say I didn't do that on purpose! Wink Wink, Knudge Knudge! LoL! ;P

[zascecs]

well then that would be extremely random... lol

[jir3h]

is this safe when you plug into a 220 volts??just asking coz' i want to make one of these..^_^

[Dipankar]

YES jie3h,
It is safe provided you don't touch it while it is plugged in.
The Capacitor brings down the voltage otherwise the LED's will burn off.

[your_dragon113]

How would the values of the resister, cap and diodes change if I was to do this in Canada using 110v?

[Dipankar]

For 110 volts........
Use Capacitor 0.47uf 250 or 300 volts AND
Resistor 1k / 1 watt or 1/2 watt.

[beehard44]

o yuh, add a fuse if you don't want to burn down your house

[Dipankar]

NOT NECESSARY.......
But you can if it gives you peace of mind.

[Banerjee]

Very good Dipankar, It's a nice project. I must do it my bed room. Congrats for getting VOTES.

[dawoj]

Good job Dip

[auramale32ml]

nice work sir.

[DrakerDG]

Good design. Congratulations! I have wanted to make one.

[pandyaketan]

2 independent power sources - 1.5v cell for the clock & 230 V AC for the LED Lamp. Another ace from the ace ! ;-D Congrats sirji !