Design[edit]

Rails 3 app with sqlite as default backend. Previously logged data retrieved through ActiveRecord. Flot for plotting.

Home-brewed simple EventMachine-based Comet server that also acts as the logging server that the EtherShield-equipped Arduino board sends its data to. As data comes in it is sent to all connected clients and simultaneously logged to the database using rails ActiveRecord.

Data sent by arduino will be simple semi-colon separated values.