/diy/ - Do It Yourself

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Anonymous Mon Aug 22 11:05:26 2016 No.1042511 [Reply] [Original]

I'm thinking about setting up 95 feet of addressable WS2801 300LED strips (yes, really) controlled by a programmable mircocontroller for muh effects.

What's the best way to go about powering them? Is connecting them all end-to-end and having one power source a good idea, or should each 5 meter strip be powered separately?

If I've calculated correctly, I should safely be able to use a 400w 12v power supply, but I'd like a double check.
I am hoping someone can shed light on setting this up safely so I don't fuck myself. Any other tips are appreciated; I'm gobbling up tutorials but advice is always nice.

Anonymous Mon Aug 22 17:32:23 2016 No.1042624
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>>1042511

You can get do 5V or 12V led, but if you do 12V you will have to use a mosfet to interface with the lights.

I don't know about WS2801, but with WS2812B you can add power where ever and it doesn't matter. If yours are the same I would suggest adding power in between strips. Also, you may have to boost your signal after so many strips. I have never daisy chained more than one 5m strip so I don't know what the limit is. Good luck OP!

>>	Anonymous Mon Aug 22 18:40:21 2016 No.1042644 You need to power each 5m seperately. I have a 3m low quality chink strip that has one end slightly diferent color due to resiistance in the strips pcb traces.

>>	Anonymous Mon Aug 22 20:06:25 2016 No.1042684 File: 2.42 MB, 380x214, TrumpShrine.gif [View same] [iqdb] [saucenao] [google] >>1042644 That's just how diodes work... But seriously apply power in between each strip for best results.

Anonymous Tue Aug 23 19:54:20 2016 No.1043057

>>1042644
>>1042684
Thanks guys. I don't know shit about electricity so diving into this is a lot of research.

Would you happen to know best practices for setting up the microcontroller (likely an arduino)? I'm reading about protecting it and shit, and having trouble finding guidance on using it with more than one 5m strip.

Anonymous Tue Aug 23 21:16:51 2016 No.1043093
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>>1043057

https://learn.adafruit.com/adafruit-neopixel-uberguide/basic-connections

This is a pretty good guide that has good standard practices. Basically, put decoupling capacitor across your power/ground terminal to absorb an over voltage. Put a resistor going from the digital pin on the Arduino to the LED strip. Try to make this connection the shortest. You can power these strips from anywhere on the strip. You may need to boost the signal depending on how many you daisy chain together.

>>	Anonymous Wed Aug 24 09:11:22 2016 No.1043299 >>1043093 Thanks breh Make America Great Again

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