Content in “led”

I wish I had enough time to hack my graduation hat like this

By Zanthess
2008-12-03 02:16

I was looking a while back for people that had hacked their graduation cap. I didn't find any links as to how to do it, but one professor actually designed a circuit board to replace the cardboard with some ultra-bright LEDs.

angered his fellow professors something fierce, but everyone else loved it.

link to the story

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1 comment

Blog entry

SED or Smoke Emitting Diode

By rik
2008-11-25 22:34

This is an attempt to record the very edge to which an LED can be driven. A failed attempt.

I tried to post this as a component page, but it would not take embedded video...

The LEDs I tried are rated at 30 mA maximum. The forward voltage is between 1.9 and 2.1 V. I used a power source of 8.1 V and a variable resistor in series that could range from 5000 to 0 Ohm.

Embedded video:

Forum topic

Cheap leds

By Runaround
2008-11-19 23:05

need some bright leds?

Look here:

IKEA LEDS

10 bright leds for $3.90 (or 1,99 euros)

2 comments

Forum topic

Can you work with LED???

By demonic_crow
2008-09-29 16:46

Can you make a 3d LED cube with an Picaxe 28x1. Like a 3x3x3 or bigger. It something second I would love to do. Robot is the first thing I want to do but learning more about LED and wanted to know if it is possible to do something like this. I can't wait till I place my order in soon to get this and share my project with everyone.

7 comments

Robot

War Pig - Line Follower Robot

Line follower
Using a

PIC18F4331

Rating:

Average: 4.3 (3 votes)

Hello, I'm proud to show you my first robot. Its name is "War Pig" and it's a line follower. I'll give you some technical specifications about the … Read more

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