Introduction: 3 in 1 Coffee Cup Torch

Picture of 3 in 1 Coffee Cup Torch

 My first instructable, it pretty simple to make, and cheap as well (less than 35 HKD), although you will need soldering equipment. I functions as a torch, head lamp and bike lamp!

Materials
2 coffee cups
2-4 LEDs
1 elastic band
1 9v battery
1 9v battery snap
2 Velcro straps
aluminium foil
1 resistor
card
some solder


Step 1: Setting Up the Cup

Picture of Setting Up the Cup

Get your first coffee cup and cut in in half (4-5 cm). wrap the inside of the cup with aluminium foil, and poke some holes in the bottom of the cup with a needle (the number depends on the number of LEDs you are using) KEEP THE TOP BIT OF THE CUP!

Step 2: Connecting the Wires

Picture of Connecting the Wires

Now that you have your cup ready, you can start  soldering. push the LEDs through the holes in the bottom of your cup, then bend the wires at the bottom so they are touching, remember that the longer end is the positive end, which needs to be touching the negative end of another LED. Connect them together using solder and don't forget the resistor and the battery snap.

Step 3: Adding the Strap

Picture of Adding the Strap

 Now stick some card to the bottom of the coffee cup, then cut the elastic band to the correct length (so that it wraps around your head tightly). then stick the elastic band to the card. Sew the wire of the battery snap to the left of the elastic band. Then cut another piece of elastic band and sew them on the main one, so that the battery fits through it. Finally, sew the Velcro straps to the ends of the elastic bands. 

Step 4: Making the Handle

Picture of Making the Handle

unwrap the top bit of the second coffee cup off, remember the top of the first coffee cup, cut the very top of that off, and put it inside the second coffee cup. secure it with tape. your're done!

Step 5: '3 in 1'

Picture of '3 in 1'

 the instructable itself can be put around the head to become a head lamp, wrap that around the pole of the bicycle and it can function as a bike lamp. To transform into a torch, put the main part into the second coffee cup. 

Comments

eygen (author)2010-05-09

Macro function. Ever heard of that?

Also, it's not a 3 in 1 torch. It can perform several different tasks, yes. But for example: I can eat ice cream and pasta with a spoon, however that doesn't mean my spoon has two different functions.

How much Ohms is the resistor?


Good idea for an instructable, but the execution could be better.

quentin888 (author)eygen2010-05-11

 the resistor should be 390 Ohms

About This Instructable

1,372views

1favorite

License:

More by quentin888:Potato VolcanoFrozen Cuddly ToysSoccer USB
Add instructable to: