[Lab] ws2812b LEDs

[Janick Bergeron]

They are indeed VERY bright (at least, Adafruit's NeoPixels are). The ones on the video I linked to are at 32/32/32

Jun 5, 2014 05:08:36 PM, darcy at inventorArtist.com wrote:
That's what I thought. So I think I can do 2 or 3 or more if they're not totally blasting. ....
>
>
>
>


>--Darcy Whyte
>Art+ inventorArtist.com | Aviation rubber-power.com

Contact: darcy at inventorArtist.com | 613-563-3634 by appointment (no text)
>

>
>On Thu, Jun 5, 2014 at 5:04 PM, Richard Sloan rsloan at themindfactory.com> wrote:
>
>

The 2812B will draw 60mA when full RGB (white) is 255,255,255
>Most Audruino can do 100-150mA, some more.... but that is at most 2-3 leds, so if 2-3 is your goal your fine. If you need more either drive them less 128,128,128 and they will draw no more than 30mA 32,32,32 and they draw 8mA
>



Or just add a seperate 5V supply for them as Janick said
>I think the 1K he mentioned is on the data line, if you put it on the 5V line it would limit current to 5ma and you would not get very much brightness from them.
>




>
>R.
>
>On Thu, Jun 5, 2014 at 3:30 PM, Janick Bergeron janick at bergeron.com> wrote:
>




>The LEDs should be connected in series so the Arduino will only have to drive one input regardless of the length of the strip. Adafruit recommends putting a 1kOhm resistor in series to limit the current.
>





>
For the power input, you should use a separate 5V supply, with a common ground with the Arduino. Again, AdaFruit recommends putting a 1mF capacitor across the power supply output to protect the strip.
>

>

>
Jun 5, 2014 12:47:17 PM, henri.kuschkowitz at gmail.com wrote:
>
Check the amperage of the arduino you are using and review what the max amperage for each ws2812b is when they’re full power (aka white) that will tell you how many you will be able to run at once.
>
> Henri
>
>
>
>On June 5, 2014 at 12:21:57 PM, Darcy Whyte (darcy at inventorartist.com) wrote:
>

>
>
>

>

>

>

>

>

>
I should be okay to run few of those LEDs off
>
Arduino's 5V out right? (The arduino is plugged into
>
9V....
>
>
>

>

>
>
>

>

>
>
>

>
--
>
Darcy Whyte
>

>
>
>
Art+ inventorArtist.com | Aviation rubber-power.com
>
Contact: darcy at inventorArtist.com | 613-563-3634 by
>
appointment (no text)
>

>

>

>
>
>

>

>

>

>

>
_______________________________________________
>

>
>Lab mailing list
>

>
>1. subscribe http://artengine.ca/mailman/listinfo/lab
>

>
>2. then email Lab at artengine.ca to send your message to the list
>
>
>
>_______________________________________________
>
>Lab mailing list
>
>1. subscribe http://artengine.ca/mailman/listinfo/lab
>
>2. then email Lab at artengine.ca to send your message to the list
>

>
_______________________________________________
>
Lab mailing list
>
1. subscribe http://artengine.ca/mailman/listinfo/lab
>
2. then email Lab at artengine.ca to send your message to the list
>

>_______________________________________________
>
Lab mailing list
>
1. subscribe http://artengine.ca/mailman/listinfo/lab
>
2. then email Lab at artengine.ca to send your message to the list
>
>

>
>_______________________________________________
>Lab mailing list
>1. subscribe http://artengine.ca/mailman/listinfo/lab
>2. then email Lab at artengine.ca to send your message to the list