Slimme meter stats

Simple application for reading the Dutch "Slimme meter" via the P1 port and generating graphics with RRDtool.

Requirements

This application expects an P1 to USB cable connected as /dev/ttyUSB0.

The following packages are required:

• Ruby
• RRDtool
• Nginx (or another webserver; example for nginx is included)
• fcgiwrap (when using nginx)

Installation

Make sure you have installed bundler:

gem install bundler

Run bundle install to install the dependencies:

bundle install --path vendor

Start the slimme meter updater in the background:

bundle exec ruby slimmemeter.rb -d -r /var/lib/rrd/power.rrd

Nginx configuration:

server {
  ...

  # Pass CGI scripts to FastCGI server
  location /cgi-bin/ {
    fastcgi_pass  unix:/var/run/fcgiwrap.socket;
    fastcgi_param POWER_RRD /var/lib/rrd/power.rrd;

    include /etc/nginx/fastcgi_params;
  }
}

Place the files in the www directory of your web directory. Make sure you put the *.cgi files in the cgi-bin directory of your document root.