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LED Wiz with current parts question

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Epyx:
In researching and assistance from members (Thanks Kman!) I understand the 500ma limit of the LED Wiz before requiring external power.  I have the following:

12x5v Novagems
2x5v Sanwa Joy mod LEDs
1xRGB GGG trackball mod kit

So am I safe in assuming that based on ~20ma per light I should be fine with my 15-18 LEDs running off the LED Wiz?

Franco B:
If you are using single colour LEDs in the Novagems then you should be fine. You will have 12 buttons lights + 2 joys + 3 from the trackball RGB which @20mA would draw 340mA at full tilt.

You will need 17 outputs from your LED Wiz.

Epyx:
Thanks FrancoB...yes all the LEDs are single colour (green) with the exception of the RGB trackball (GGG)

RandyT:

--- Quote from: Epyx on March 09, 2010, 03:55:07 pm ---In researching and assistance from members (Thanks Kman!) I understand the 500ma limit of the LED Wiz before requiring external power.  I have the following:

12x5v Novagems
2x5v Sanwa Joy mod LEDs
1xRGB GGG trackball mod kit

So am I safe in assuming that based on ~20ma per light I should be fine with my 15-18 LEDs running off the LED Wiz?

--- End quote ---

You are going to need external power for this setup.  Assuming your Joy mods are using a single 20ma LED each, you will need about 1700ma, which is well over what the USB port can provide.

RandyT

darcyp:

--- Quote from: RandyT on March 10, 2010, 10:17:07 pm ---You are going to need external power for this setup.  Assuming your Joy mods are using a single 20ma LED each, you will need about 1700ma, which is well over what the USB port can provide.

--- End quote ---
This confuses me. Wouldn't he be effectively using 17 leds (14 single color and 1 rgb), thus needing 17x20=340 ma? Or does the trackball kit draw more power?

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