Finally finished getting the solar power feed to display OK on my website!
I have been wrestling with this code for some time, but with a little help from the Pachube support team I have now got the data updates to run smoothly, updating every 20 seconds.
The code which I used is shown below, just change your feed name and API key;
Don’t have a FTDI cable, and want to program a Nanode? well if you have a Arduino board, it’s very quick and easy to do so, using a simple set of home made leads to connect both boards together.
The connections needed are;
0v to 0v
Tx to Tx
Rx to Rx
I have used the Openenergymonitor 2 channel non invasive sketch, to build a device which monitors how much power is being used in the home, and how much power is being generated by the solar panels.
If I am generating more than I am currently using, then the excess power is diverted to an immersion heater – to heat domestic hot water.
This is a better option than it flowing back to the grid for which I don’t get paid (solar renta roof).
This was a steep learning curve as I have never worked with a microprocessor before, but great fun and a great sense of acheivement when it actually works!