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Kuala Lumpur, Malaysia
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I went trying out my LED by connecting it to the 5V and the ground pin ( 2k ohm resistor is also present ). Suddenly, the LED was just flickering and died out. I was running one of my self-programmed 'reset' mode below. But how come this could happen?
Quote
void setup()
{
  ;
}

void loop()
{
  ;
}

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I don't think you connected the grounds, Dave.
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Defective LED (?)
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Kuala Lumpur, Malaysia
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I dont think so
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led plus resistor across 5 volt supply must glow unless :-

a) no 5 volts
b) resistor defective
c) led defective
d) led connected wrong way round
e) you just dreamt it
f) you just went blind
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I went trying out my LED by connecting it to the 5V and the ground pin ( 2k ohm resistor is also present ). Suddenly, the LED was just flickering and died out. I was running one of my self-programmed 'reset' mode below. But how come this could happen?

Whats your Forward Voltage and Nominal Current rating on your LED?

What led you to choose a 2K Ohm Resistor?

I have a feeling your LED might not be dead, you're just giving it only 1.4 milliAmps.
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Manchester (England England)
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My money is on faulty wiring. Are you using solder less bread board? If so rattle the wires.
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Now I knew why, I was trying to save my time. So I had connected it on a breadboard through the power pins ( most left and right side ) with a 2K ohm resistor. As we know, the breadboard connects power and ground vertically. Therefore adding a resistor is useless. I think this should be the reason why the led had died out ( supplying a voltage of 5V directly although there is a 2k ohm resistor present ). By the way, thank all of you for the replies!!!!    ' v '

« Last Edit: July 06, 2011, 05:55:13 am by low5545 » Logged

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I don't think you connected the grounds, Dave.
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I want to use a good quality 9v battery
If you ever find one, be sure to let us know.

(if you have a specific question, it is best to start a new thread, rather than hijacking someone else's unrelated thread)
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My error. Just finding my way around here.
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Craig Turner, blog: http://gampageek.blogspot.co.uk/ It helps with my learning if I write things down, esp. for others to follow (constructive comments welcomed to improve)

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