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First things first – this project is a blatant and obvious rip-off of John Jarvis’ power monitoring project! A few minor details have changed but I have to give him credit for a great project idea. I was intrigued by John’s power meter and it gave me an excuse to buy and try an Arduino – a handy and fun little embedded project platform! John’s power meter uses the ethernet shield and some CGI scripts, etc., to talk with his server – I went with AsyncLabs WiShield to put my power meter onto the network – my backend to get the data to the server is also a bit different (but of course).
The basic idea of the project is that an Arduino Duemilanove is continuously reading the analog pins that a couple TED Current Tranducers are connected to (one per phase). The Arduino does a little smoothing/averaging of the data and waits for an IP connection to send that data out on. Another machine has a Win32 service running on it and every minute it queries the power meter for its current data; the data that is received is stuffed into a MySQL data base. When a web request comes in to view the data a few pre-canned charts are generated real time and returned to the web user’s browser.
The basic idea of the project is that an Arduino Duemilanove is continuously reading the analog pins that a couple TED Current Tranducers are connected to (one per phase). The Arduino does a little smoothing/averaging of the data and waits for an IP connection to send that data out on. Another machine has a Win32 service running on it and every minute it queries the power meter for its current data; the data that is received is stuffed into a MySQL data base. When a web request comes in to view the data a few pre-canned charts are generated real time and returned to the web user’s browser.
