I want to hack my electrical distribution board a little, to measure the energy used by each circuit.
Thus, I want to use a little arduino or maybe a raspberry pi and plug it to my circuits to take measures (I assume I should use things like ampmeter or voltmeter). Then I could make charts about what use energy the most in my home (and eventualy point energy leaks).
Unfortunately, I have less-than-basic knowledge about electricity, so I don't have a clue about how to measure energy.
So here are my questions :
- where and what should I plug to my circuits ?
- how many measures would be enough to be valuable ? (one every millisecond ? second ? hour ?)
- would this system consume a non-negligible amount of energy ?
EDIT : as Will Dean stated, I should start with something small. Please consider this question to apply to a simple plug, and not an entire electric panel :-)
FINAL EDIT : I have to admit this seems way too dangerous for me since there is too much information I don't know about the electricity way across my home. So the final answer is : I give up for now. Any advice to how to teach myself is really welcomed