Redundancy Emoncms <--> Arduino

Submitted by Guest on Mon, 18/03/2013 - 07:14

Hi all,

i’m using Emontx and NanodeRf since Oktober 2012 and works fine.

My question : are here a possibility to make a redundancy of the data I send to emoncms ?

If it’s possible to read all the data back to an Arduino, I make a search but nothing find :-(.

(Sketch example or guides)..

My final purpose is to display all the value to a matrix Led ring and a Touch Display.

Thanks

Remo

Re: Redundancy Emoncms <--> Arduino

Submitted by Robert Wall on Mon, 18/03/2013 - 16:38.

Do you mean: You want to use another Arduino equipped with a RFM12B receiver to listen to the data as it is sent from the emonTx to the nanodeRF then to emoncms, and drive a separate display? - That is similar to emonGLCD so yes, that should be possible but as far as I know, nobody has done it.

If you want to use an Arduino equipped with an ethernet port to request historic data via the Internet from emoncms and display it, then again that should be possible but again as far as I know, nobody has done it. The amount of processing power you need might be more than an Arduino has.

Re: Redundancy Emoncms <--> Arduino

Submitted by remino (not verified) on Wed, 20/03/2013 - 12:35.

Hi Robert,

i mean the 2nd Option , Arduino with Internet shield, i need to retrieve only 2 created Feed's on the Emoncms.

Bye and thanks

Remo

Re: Redundancy Emoncms <--> Arduino

Submitted by Robert Wall on Wed, 20/03/2013 - 13:32.

I think the information you need to retrieve the data is in the emoncms feed API help. Note you need to add your API key:

http://emoncms.org/feed/value.json?id=1234&field=1&apikey=xxxxxxxxxxxxxx...

For a sketch, your starting point is the Ethernet library examples: WebClient

Re: Redundancy Emoncms <--> Arduino

Submitted by remino (not verified) on Wed, 20/03/2013 - 14:07.

Thank you Robert,

i try to build a sketch using the Webclient example as starting point.

Regards

Remo

Re: Redundancy Emoncms <--> Arduino

Submitted by remino (not verified) on Wed, 20/03/2013 - 14:19.

And here the first question about the WebClient example.

IP for Emoncms ? Or it's enough when i set the Web Adress directly in the line below ?

IPAddress server(173,194,33,104); // Google

Thank you

Bye

Remo

Re: Redundancy Emoncms <--> Arduino

Submitted by Robert Wall on Wed, 20/03/2013 - 16:10.

It is best to use DNS to get the IP address, sorry. I should have pointed you towards DnsWebClient.

Re: Redundancy Emoncms <--> Arduino

Submitted by remino (not verified) on Fri, 22/03/2013 - 07:01.

Hi Robert,

thank you for all the Information, this week-end i try to startup.

Bye

Remo

Archived Forum