Step 1: The Requirements
1. a thin, but strong cardboard piece
2. a punch hole machine (if you dont have steady hands)
3. 7 leds (one for the centre
4. a 100 ohm resistor.
5 . wires, length < 15 cm for the main head
6. a five volt power supply
7. quick glue
8. a soldering iron
Step 2: Making the Stencil on Cardboard
First of all make a hexagon with each side of length 1 cm, this should give u the interior angles of 60 degree(just to make sure).
Then join all the vertices to get a central point. Now bring the punch hole in use, and with quite steadiness, make 7 holes, each on the vertices and one on the central point.
Step 3: Pushing the L.E.Ds
Now with the holes ready, you can push the led's right into these holes BUT with a twist, first get a rod of same diameter of the leds and bend the holes on the vertices slightly inwards and ONLY those holes, leave the central hole.
Now take the super glue/quick glue, and with very tiny amount of that (one drop) affix these leds permanently, be sure to do the "glueing" on a raised platform so that the leds dont get their tips, in any way , stuck to any surface.
Step 4: The Circuit.
Now there are many possibilities with the circuit, but i used a parallel one, connected all the positive with one wire,and all the negative with the other, i haven't used the resistor yet.
Step 5: Soldering
meh, you can do it yourself. :P
Step 6: Taking a Test Run
Step 7: If You Want to Put Them in a Civilized Way....:P
So, if you are planning to cover the top part, take an idea from these photos. Thanks for viewing.