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  3. Request for input: Driving 2 rgb stripes with 1 Arduino

Request for input: Driving 2 rgb stripes with 1 Arduino

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  • O Offline
    O Offline
    Oitzu
    wrote on last edited by
    #1

    I was thinking about a pcb that could drive 2 rgb stripes with 1 pro mini.
    Options i was thinking about:

    1.) Using shift registers to generate the required pwm signals.
    (http://www.elcojacobs.com/shiftpwm/)
    But this could possibly but a bit to much load on the arduino in combination with radio work.

    2.) Use Pins D3, D5, D6, D9, D10 and D11 and soft-spi for the radio. But D5 and D6 are a little bit broken on Arduino...

    Any more ideas?

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    • T Offline
      T Offline
      tbowmo
      Admin
      wrote on last edited by tbowmo
      #2

      You could probably use a ws2801 driving a couple of FETs. Then you are down to 1 pin on the arduino for the control.

      See this page for more info http://longhornengineer.com/2013/12/26/appnote-using-mosfets-to-expand-the-ws2801-led-driver/

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      • O Offline
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        Oitzu
        wrote on last edited by
        #3

        Hm... yeah that looks nice. :) Thanks @tbowmo

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        • S Offline
          S Offline
          scalz
          Hardware Contributor
          wrote on last edited by
          #4

          don't know if you are looking for something like this : http://hallard.me/arduiled/

          O 1 Reply Last reply
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          • S scalz

            don't know if you are looking for something like this : http://hallard.me/arduiled/

            O Offline
            O Offline
            Oitzu
            wrote on last edited by
            #5

            @scalz said:

            don't know if you are looking for something like this : http://hallard.me/arduiled/

            " Arduino board that I done to drive adressable RGB Led strip "
            No. But thanks for the link. :) tbowmo hit the point. A way to drive 6-PWM-Channels from the arduino pro mini / 328p.

            The ws2801 seems to fit great. The price on low volume i found (0,29€ per ic) also sounds okay.

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            • O Oitzu

              @scalz said:

              don't know if you are looking for something like this : http://hallard.me/arduiled/

              " Arduino board that I done to drive adressable RGB Led strip "
              No. But thanks for the link. :) tbowmo hit the point. A way to drive 6-PWM-Channels from the arduino pro mini / 328p.

              The ws2801 seems to fit great. The price on low volume i found (0,29€ per ic) also sounds okay.

              S Offline
              S Offline
              scalz
              Hardware Contributor
              wrote on last edited by
              #6

              @Oitzu : cool :) yep I should have read tbowmo link, lol! I am reading it now. indeed it seems interesting.
              I will look at what you will do ;)

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              • T Offline
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                tbowmo
                Admin
                wrote on last edited by
                #7

                Wish that I was allowed to use RGB leds in the house, so I would have a purpose of building a LED strip controller... But the wife is saying NO! to colorful lights

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                • O Offline
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                  Oitzu
                  wrote on last edited by
                  #8

                  @tbowmo i've done this and girlfriend loves it:
                  https://drive.google.com/file/d/0B7nIiHfk3fCwalFZSlBlOW9Ea1k/view?usp=sharing
                  Mabe you can convince your wife with this? ;)

                  Aliexpress link for documentation:
                  http://de.aliexpress.com/item/NEW-100-import-original-WS2801-SOP-14/32519847104.html?spm=2114.010208.3.9.NTQfaW&ws_ab_test=searchweb201556_9,searchweb201644_1_505_506_503_504_502_10001_10002_10016_10005_10006_10003_10004,searchweb201560_3,searchweb1451318400_-1,searchweb1451318411_6449&btsid=c91f6da4-f44e-4d79-9272-ab3560b38359

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                  • E Offline
                    E Offline
                    ericvdb
                    wrote on last edited by
                    #9

                    @Oitzu, that looks familiar, Ikea right ;)

                    O 1 Reply Last reply
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                    • E ericvdb

                      @Oitzu, that looks familiar, Ikea right ;)

                      O Offline
                      O Offline
                      Oitzu
                      wrote on last edited by
                      #10

                      @ericvdb said:

                      @Oitzu, that looks familiar, Ikea right ;)

                      Yes, you're right ;) Older Malm Modell.

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