[TriEmbed] NRF24L01+ Based Large LED Array control - TriEmbed Digest, Vol 24, Issue 2

[Michael Wayne]

You can use whatever board you want. If I'm going to participate, I'm only
interested in using the board my company produces, the Chariot.
On May 2, 2015 1:28 PM, "Terry King via TriEmbed" <triembed at triembed.org>
wrote:

> Hello Michael,
>
> The nRF24L01 could work for this; there is the ability to talk to multiple
> units and also "RF24"
> has a library for a mesh type network, I think.
>
> See:  http://arduino-info.wikispaces.com/Nrf24L01-2.4GHz-HowTo
>
> and: http://maniacbug.github.io/RF24Network/index.html
>
> Regards, Terry King
> ...In the Woods in Vermont USA
> terry at terryking.us
>
> DISCLAIMER: Mentioned stuff I do sell in my own shop...
>
> -The One who Dies with the most Parts LOSES. What do you need??
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 01 May 2015 21:15:48 -0400
> From: Michael Fulbright <mike.fulbright at pobox.com>
> To: triembed at triembed.org
> Subject: [TriEmbed] NRF24L01+ Based Large LED Array control
> Message-ID: <55442544.4060202 at pobox.com>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> I've been following the large scale building lighting project and it
> sounds cool.  I was thinking about it some driving home today and
> wondered if the simple NRF24L01+ modules wouldn't work.  These are $1
> each and have the typical 30m indoor range (depending on walls, etc) and
> can be run between 200 Kbit/sec to 1.5 Mbit/sec as I recall.  I use them
> for remote sensors I built and put all over the house.   They work at
> 2.4GHZ as I recall.
>
> I would think you could have a master at the base level of the building
> and each "refresh cycle" for the display you would have the master send
> a message which encoded the display contents (which building levels are
> on/off).  If all of the lighting nodes would just be listening nodes so
> this is easy.  The first floor light will receive the message from the
> master, put its light in the correct state, then temporarily go into
> xmit mode and repeat the message, then return to listening mode.  The
> second floor would either have already received the masters message or
> more likely the repeated message from the 1st floor.  Then goes on until
> the final floor receives a message.  It would take a little
> experimenting but I think you could easily support a refresh rate of
> several HZ using this.  The nice thing is you can add as many nodes as
> you want and as long as the message encodes each nodes state then you
> really have no configuration except teaching each node what its address
> is (so it can pick out its state from the message).
>
> The message could be a simple bit-encoded state array so it would be
> quick to xmit.
>
> Just an idea based on some things I've played with.  The NRF20L01+
> modules have fairly robust support for Arduinos so you could get the
> cost for a single node down to almost single digits if you use really
> cheap Arduinos (not including the cost of the LED strip controller, but
> that is a fixed cost we can't control).
>
> Michael Fulbright
>
> ------------------------------
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