Module for measuring energy consumed in home

Using Arduino Motors, Mechanics, Power and CNC
1

Im wanting to measure the energy consumed in a home. Im guessing ill need to tap the mains power line somehow.

Is there a module or component of some sort that'll allow me to measure energy consumed?

2

You can get current sensors that clamp around a cable so there is no need to interfere with the mains wiring. You can assume a constant voltage so it should only be necessary to measure the average current (i.e. averaged over the sine wave cycle).

...R

3

Do you know where I could get those sensors?

4

Not specifically but I'm sure most electronics suppliers stock them - they are not unusual.

Try Googling arduino current sensor

...R

5

Thanks, got it...I was getting the clamp handheld and the modules. Just found the clamp sensors like

6

Marciokoko:
Thanks, got it...I was getting the clamp handheld and the modules. Just found the clamp sensors like

Non-Invasive Current Sensor - 30A - SEN-11005 - SparkFun Electronics

I also want to build a DIY home energy monitoring. But not sure which current sensor should use. The good one is too expensive but inexpensive one as I afraid that it's not accurate and stable enough.

Have you tried with above sensor. If so, should I use it?

Thanks,

7

Your property's mains input has a meter which does this already - and unless it's ancient it will have a little led on the front which flashes for every so much energy used - I think every 1/100 kWH. ( but check me on this )

Get a little photodiode and use that to just count pulses.

regards

Allan.

8

No sorry, I haven't ordered it yet.

I'll let you know when I get it and try it.

9

You get a far more accurate answer by using your existing electricity meter than by using any of the common current clamp types as at best they will only give you a rough approximation.
Electronic meters all have usually a flashing led which you can easily detect, and even the old spinning wheel meters have a black marking on the spinning wheel which you can detect by shining a light on the wheel and measuring the light reflected.