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Ps3 Controller Led Resistor Help Please

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#1 i7vSa7vi7y


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Posted 13 May 2011 - 09:36 PM

So im working with one of the first model controller for PS3 the sixaxis that has no rumbles.
MSU_V2.5 1.05 (Six-Axis)
Im doing some LED mods. My led fried.
I have + TP1 and - from the battery on the mobo.
Should i get a resistor or do i have the wrong points?
Also are the voltages different for different controller models?
Im undecided which leds im going to use 0603 or 3mm.

This is for my 0603 SMD leds
Parameter Typ Max Unit
Luminous Intensity - 80 mcd
Wavelength 470 nm
Viewing Angle - 130 +/- Deg
Forward Voltage 3.0 3.4 V
Reverse Voltage - - V
Forward Current - 20 mA

This is for 3mm
Parameter Min Max Unit
Luminous Intensity 1500 1200 mcd
Viewing Angle 24 30 Deg
Forward Voltage 2.8 3.4 V
Reverse Voltage ~ - V
Forward Current ~ 20 mA
Wavelength 465 - 470nm

Any help appreciated thank you in advance.

#2 RDC


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Posted 14 May 2011 - 03:35 AM

You always use a Resistor on an LED, unless the voltage is lower than what the LED is rated at, and then it's not going to be as bright as it could, but might work alright, just depends on the LED.

TP1 is the 5v TP spot for the USB connector.

Unless you want your LED to be on all the time and drain the battery, then use the VCC spot from one of the Analog Sticks, it's 2.8v and is switched. If you want a higher switched voltage than that, then you'll have to use an OptoCoupler or Transistor and make one.

If you only want the LED on when it's plugged into a USB port, then use TP1, but use the appropriate Resistor value for a 5v source, plenty of LED Calculators online to use for that.

#3 i7vSa7vi7y


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Posted 15 May 2011 - 02:55 AM

I did this mod with no resistors.

I put a 30 resistor on it and the LED was very dim.
All the calculations give me higher than what i had.

Edited by i7vSa7vi7y, 15 May 2011 - 02:58 AM.

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