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Author Topic: Can I connect input pins directly to +5V?  (Read 2125 times)
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Brunsbüttel, SH, F.Rep.GERM
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OVER LOAD ALERT   smiley-red

if u drive 16 1kOhm resistors from 1 arduino pin, u will get 80mA, which is too much for a single pin...
so u should use 3kOhm resistors...
or a mosfet as a driver (the arduino pin goes to the gate)...
or a bjt...

oops
« Last Edit: July 05, 2012, 09:54:44 am by RIDDICK » Logged

-Arne

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Thanks for that. I'll use 16x 4k7 then, that adds up to 17mA.
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Chris

Location: Berkshire, UK
My Astro and DIY projects website: http://yesyes.info/

Brunsbüttel, SH, F.Rep.GERM
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kewl  smiley
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-Arne

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I've managed to solder this on a rather small footprint last night.. ;-)
Not tested yet, will report back how it works.

Thanks again for all your help! Much appreciated. smiley


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Chris

Location: Berkshire, UK
My Astro and DIY projects website: http://yesyes.info/

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