Just built my first Jeenode Relay plug

and rewrote my rewrite of the "rooms" sketch to add control of both relays from a computer.

I just used this to turn on and off a RGB LED strip I'm going to use for a light inside a set of cabinets. It works.

Next step is now to build 2 MOSFET plugs to let me control light levels and colours.

It's all starting to come together.

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I just found jsfiddle - a great helper when developing javascript :

(Click for larger)

I'm using it to make sure I understand the slightly obtuse highcharts examples.

Great!

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The charting of electricity usage are improving as my understanding of highcharts is improving - and they now look better

(Click for larger)

It is of course difficult to use the dynamic zoom features in a static image as the one I have embedded here (-; .

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Problem with Jeenode V4

(Just to start with a bit of background - I've got 8 Jeenodes so far - 4 of these hand soldered without any real problems except for turning the radio the wrong way round for the first one)

I received my first 2 Jeenode V4's a couple of days ago - and soldered them together, and started them up.

Both displayed the same behaviour - where the prompt for the Demo sketch cam up as one line, with no further activity.

I have spent a bit of time trying to find out why - including using a magnifying glass to check my soldering etc.

In the end I had to start software debugging - and it all ended up with these lines in RF12.cpp

" // wait until RFM12B is out of power-up reset, this takes several *seconds*
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The software measure our gas usage in the house is coming along slowly - I have attached a LDR to one of the Jeenodes and found out the light level when just the pilot light is on, and the light level when the burner is on.

so I can now detect the transitions when the boiler turns on and when it turns off, and from there calculate how long it was turned on for.

This all looks a bit strange at the moment :

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