Hi guys,
I'm beginning a project where i need to controll a PDL8806 compatible 12V LED strip through an Arduino. I was looking at the tutorial here http://learn.adafruit.com/rgb-led-strips/overview however it uses an analog strip. Do i still need a transistor for digital led strips if using an external 12V power supply?
Thanks in advance
PDL8806 LED strip wiring
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PDL8806 LED strip wiring
Last edited by mistblind on Fri Apr 12, 2013 7:48 am, edited 1 time in total.
- adafruit_support_bill
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Re: PDL8806 LED strip wiring
Which strip were you planning to use? All of our digital strips run on 5v.Do i still need a transistor for digital led strips if using an external 12V power supply?
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Re: PDL8806 LED strip wiring
Hi, thanks for the reply.adafruit_support wrote:Which strip were you planning to use? All of our digital strips run on 5v.Do i still need a transistor for digital led strips if using an external 12V power supply?
I don't really know to be honest. A friend of mine is ar re-seller of SPI LPD8806 based digital strips that uses 12V that i'm planning to use.
- pburgess
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Re: PDL8806 LED strip wiring
No transistors are needed for 12V digital pixels. A 12V supply connects directly to +V and GND, but the clock and data inputs are 5V, directly compatible with Arduino and such. Our giant 36mm square pixels are 12V powered.
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Re: PDL8806 LED strip wiring
Great, thanks for the reply.
Now i know that i wont be needing the transistors. But how about power? I know that i need a 12V external power supply that will power both the leds and the Arduino itself. The strips draw 0,48A/meter and since i will be using 5 strips that sums up to 2,4A and 28,8W. The specs for the power supply i'm thinking of bying is:
output 5.0-6.0-7.5-9.0-12.0 V = max. 3A
Is 3A too much?
Now i know that i wont be needing the transistors. But how about power? I know that i need a 12V external power supply that will power both the leds and the Arduino itself. The strips draw 0,48A/meter and since i will be using 5 strips that sums up to 2,4A and 28,8W. The specs for the power supply i'm thinking of bying is:
output 5.0-6.0-7.5-9.0-12.0 V = max. 3A
Is 3A too much?
- adafruit_support_bill
- Posts: 88086
- Joined: Sat Feb 07, 2009 10:11 am
Re: PDL8806 LED strip wiring
No. The strips will only draw what they need from it.Is 3A too much?
Please be positive and constructive with your questions and comments.