Driving 20 LEDs from uC

Sep 20, 2006 34 Replies

Exactly right.

Who was wrong, since the absolute maximum current through the Vcc or GND pins is 70mA, and 8, 20mA LEDs will try to pull 160mA.

It's nuts to drive a led with 20mA.

Have you guys never heard of low-power circuitry ?

Graham

I'll bet that's made your day now !

Graham

Do try to contain your glee !

It's good advice to use low current leds anyway.

Graham

datasheet. I

output

I'm sure it has - John reminds me of the (in)famous Phil Allison. Personally, I've had a gutfull of all this BS. I can find far better things to do than waste my time on these newsgroups. I won't be back.

Don't give up that easily. It's par for the course on Usenet.

Graham

But it wasn\'t about you.

No, it\'s not, and, right or wrong, it\'s what the OP asked for.

Yup! Any time I can back your slimy ass into a corner you can\'t get out of it makes me happy! :-)

Why? It feels good to nail ya! :-)

Geez... ya try to help a guy out and whaddya get? Bony fingers.

Lots. Never heard of energy efficiency or power budget ?

No. I advocated using another uC in fact.

Graham

You get a view of how you appear on here.

Graham

Well, ya can\'t worry about what the pussies think, like you do.

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