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Author Topic: 16 leds 1 arduino nothing else  (Read 854 times)
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Down Under (Australia), SA
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read next pots
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Down Under (Australia), SA
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[
IMG_09491 by tigerbomb8, on Flickr 
ok so i have a question currently the leds are getting + from the bottom one than the one on the top, and the - just goes straight to ground, can i make a spare pin ground. so then i can power 1 led at a time
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India
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Well yeah you can, maybe you'll require a lot of wires then? Try adding some resistors for safety, yesterday I blew up a big LED because it was directly connected to the power smiley-sad

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North Yorkshire, UK
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Quote
Try adding some resistors for safety
You mean "Try adding some resistors cos you need them"
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Down Under (Australia), SA
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what i mean is have pin 13 which is controlling the left 2 leds
and have another 2 pins to act as ground which i can turn on and off, say if pin 2 is the ground for all the top layer
so if i pin 13 is HIGH and then have pin 2 on what ever i should put it on to accept the ground the top left led should turn on
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India
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@mowcius:
Yeah right smiley-razz
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Denmark
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Have a look at Charlieplexing for inspiration:
http://en.wikipedia.org/wiki/Charlieplexing

Notice the resistors.  smiley
« Last Edit: January 03, 2011, 09:52:16 am by c_masden » Logged

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This is how i run 16 leds on 8 arduino pins
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1268441497/0
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