How to connect Status LEDs

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nenno
Posts: 14
Joined: Mon Jan 31, 2011 4:59 pm

How to connect Status LEDs

Post by nenno »

Hi...
I want to connect the status-led port (i think its D13) to my whole LED flexible Strips.
How can i do this. I think i need a transistor. Can someone post a working circuit, please?

nenno

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captaingeek
Posts: 228
Joined: Fri Jan 28, 2011 6:42 pm

Re: How to connect Status LEDs

Post by captaingeek »

maybe use a relay?

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captaingeek
Posts: 228
Joined: Fri Jan 28, 2011 6:42 pm

Re: How to connect Status LEDs

Post by captaingeek »

here's a circuit, not sure if this is the best method:

http://en.wikipedia.org/wiki/Solid_state_relay

bradleyk
Posts: 48
Joined: Wed Jan 19, 2011 10:58 pm

Re: How to connect Status LEDs

Post by bradleyk »

how much current does the leds draw?

nenno
Posts: 14
Joined: Mon Jan 31, 2011 4:59 pm

Re: How to connect Status LEDs

Post by nenno »

they draw max. 400mA...

Turnigy High Density R/C LED Flexible Strip-Red:
http://hobbycity.com/hobbycity/store/uh ... oduct=8941

bradleyk
Posts: 48
Joined: Wed Jan 19, 2011 10:58 pm

Re: How to connect Status LEDs

Post by bradleyk »

Image

this is the curcit, the bd 237 will support enough current

nenno
Posts: 14
Joined: Mon Jan 31, 2011 4:59 pm

Re: How to connect Status LEDs

Post by nenno »

Thanks...

Today i tested the circuit. Works great. I use a BC639. The Datasheet says that this Transistor can handle 1A collector current.
... now i can connect a whole Christmastree to D13 :mrgreen:

The LEDs from 1m flexible Strip draw ca 250mA..

cu Nenno

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