Use an LDR to read pulses from an LED on an electricity meter, and use them to calculate the instantaneous power consumption. See the blog post at http://blog.arrayofbytes.co.uk/?p=144
- Get Raspbian up and running on your Pi.
apt-get install python virtualenv
- create a
RPi.GPIO- using pip; you can
pip install < requirements.txt
- follow the blog post to get the hardware set up
python monitor.pyto get monitoring!