Comments on: New home monitoring setup – part 1

By: New home monitoring setup – part 1 « Arduinian Tales

New home monitoring setup – part 1 « Arduinian Tales — Fri, 26 Feb 2010 09:19:55 +0000

[...] waiting for part 2!via [John Rambilngs Blog] [...]

By: john

john — Thu, 25 Feb 2010 19:14:53 +0000

Good points Nick. I will give my take on these in the second post – early next week.

By: john

john — Thu, 25 Feb 2010 19:13:39 +0000

Wondering about the RFM12B instead of the XBee. @andrewdlindsay is doing some range tests and his results may encourage me to change. RFM12B is available for around £4, whilst XBee-pro costs around £22 so there is quite a saving. The Jee Labs node uses the RFM12B. http://shop.jeelabs.com/products/jeenode

By: Nick

Nick — Wed, 24 Feb 2010 21:39:57 +0000

I agree with the setup. It is what I was planning.

Some of the things that were on my plan are this.

1. Fault tolerance. It’s clear that links can go down.

What that means to me is that the sensor controllers have to store information, in case the link goes down and forward it on when it comes back up.

Same with the data logger, and the connection on.

2. Push or pull?

Do you push data, or do you pull data?

My view, data logger pulls data from sensor and pushes out.

3. Control. If you put a clock on the sensors, then you need to set them remotely. That means sending commands down to the sensors.

a) Get data
b) Set clock
…

4. Data format. My view is that it could all be xml. The data logger then records xml.

5. What about a remote viewer?

6. What about controllers?

Nick

By: john

john — Wed, 24 Feb 2010 13:21:13 +0000

Now there is a thought!

By: Claire

Claire — Wed, 24 Feb 2010 13:16:23 +0000

And the process towards the police state at home continues….
How long until you tag us with microchips (or has it already happened!)