Update October 10th: I made a 2.0 version of the BraceLED. It's just as cool as this BraceLED, but with a different look & feel, and it fixes some minor problems. Please check it out here.
This bracelet is only an example to show how to get led's into a wearable fashion-item. In the same way, you can make belts, patches, or anything you want. So make your Halloween-costumes blink!
Here comes a video...
Step 1: Tools and Stuff You Need
- Ducttape in a color of your choice
- 6-10 LEDs (5 mm). Pick your color
- 2 strips of Aluminium-foil, 30 x 5 cm
1 Button shaped battery. Bigger is better (in this particular case).
I used a Duracell 2032 Lithium cell. Costs around €1,80 / US$ 2,20
- 1 Super magnet (neodymium). I used a cube 5x5x5 mm, but a disc-model works just as well. Europeans: shop at www.supermagnete.de
- Two pieces of iron wire, 0.5 mm thick
Tools you need:
- X-acto knife
- Pliers with a small tip
- Strip of paper to take the measure of a wrist
Step 2: Start Making It!
- Determine the size of your BraceLED
- Position and fix the ducttape strips on a workbench. Sticky side up!
- Fold the alu-foil strips and stick them on the ducttape
- Stick the battery into it's place.
Also take a look at the photo's and the comments. I tried to make the pictures as self-explanatory as I could...
Step 3: Picking and Placing the LEDs
- Prepare the leds by spreading the legs and bending their tips into a small loop.
- Place the leds on to the ducttape.
- Close the circuit and test it.
Step 4: Almost There: Folding the BraceLED Together
- Optional: Fixing the BraceLED with two pieces of iron wire for extra rigidity.
- Cut loose the BraceLED
- Fold the ducttape inwards
- Fix the plus-side of the battery to the alu-strip.
Again, take a look at the photo's and the comments. I tried to make the pictures as self-explanatory as I could...
Step 5: Finish Up!
One small thing about power, energy and batteries:
- -The 2032 model coin-battery contains about 220mAh at 3 Volts.
- I measured a current of 58 mA in the main circuit. This means that my BraceLED will shine brightly a bit over 3,5 ( = 220 / 58) hours.
- Because of the above, a bigger battery (more mAh), means a longer lasting BraceLED. Bigger is better, for once.
- Replacing the battery can be done, by gently pulling loose the ducttape around it. Be careful though not to break the alu strips.