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Author Topic: problemo with 5V spot  (Read 1822 times)

Offline DubbleDutch

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problemo with 5V spot
« on: August 31, 2008, 12:16:01 PM »
i've got some problems with the 5v spot


i decided to use the 5v spot for a standard triggermod


where the leds turn on with the wifi switch
now the problem is, as soon as the psp is on and i put the switch on, the leds turn on bright, and immediately they fade :S
i've got the correct resistor between them

but when the psp is off they just shine normal :S


can anyone show me another spot to solder to? or explain how this comes.

Thanx!
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Offline DubbleDutch

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Re: problemo with 5V spot
« Reply #1 on: September 02, 2008, 02:48:03 PM »
come on?? anyone ??
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Offline anthonyta

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Re: problemo with 5V spot
« Reply #2 on: September 02, 2008, 02:53:50 PM »
maybe its your ground point. try changing it idk
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Offline l0rdnic0

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Re: problemo with 5V spot
« Reply #3 on: September 02, 2008, 06:59:41 PM »
Quote from: DubbleDutch on August 31, 2008, 12:16:01 PM
i've got some problems with the 5v spot

now the problem is, as soon as the psp is on and i put the switch on, the leds turn on bright, and immediately they fade :S
i've got the correct resistor between them

but when the psp is off they just shine normal :S
Thanx!

OK silly question time, how many led's are you using? What fwd voltage do they operate in and what value resistor are you using?
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Offline DubbleDutch

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Re: problemo with 5V spot
« Reply #4 on: September 03, 2008, 10:13:01 AM »
2 Red 0603 SMD (in triggers)

Source Material:     AlGaInP
Emitting Colour:    Red
Emitting Wavelength(nm):    620-630
Size:    1.2 x 0.8 mm
Intensity (mcd):    70-110
Viewing Angle (deg):    120
Forward Voltage (V):    1.8-2.4
Forward Current (mA):    20-30
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Offline l0rdnic0

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Re: problemo with 5V spot
« Reply #5 on: September 03, 2008, 01:27:55 PM »
So how are you wiring them exactly, in a series or parrallel? Also what resistor value are you using. Anyway this might help, I wipped it up for you. Guys correct me if I'm wrong but I think that should do the trick. Note that this has been built using a source voltage of 5.1 since the slims 5volt spot has been known to vary. Also the Resistor used in the parrallel drawing should be more like 45 Ohm but 47 Ohm is more common. :tup:



Oh Crap a spelling mistake!!!


 
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Offline DubbleDutch

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Re: problemo with 5V spot
« Reply #6 on: September 03, 2008, 02:46:56 PM »
they go parallel with a 10 ohm resistor


anyway thanx for the info ln :)
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Offline l0rdnic0

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Re: problemo with 5V spot
« Reply #7 on: September 03, 2008, 04:00:00 PM »
I have done that mod before and not had any problem, I figured I would make just a suggestion as I assumed that you were using the 10 Ohm. So That resistor may be to small for Red Leds using fwd 2.4 and maybe that's why yours leds are to bright and burning out. Good luck.
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