Submitted by Steven (not verified) on Tue, 02/02/2010 - 00:59.
I've built the the non invasive home energy controller, but the thing is i'm not looking to connect the CT to the main. I want to connect it to like a external receptacle to measure the current of a single device much like kill-a-watt or something similar.
I have a CT rated for less than 60A with output at 0.333Vac. I was looking at the arduino sketch and i was wondering how does setV change? because from the example setv prints
242.62
243.17
242.90
??
Also can you explain the ADCvoltsperdiv= 0.0048? how do we arrive this number and why do we use it?
I've built the the non
I've built the the non invasive home energy controller, but the thing is i'm not looking to connect the CT to the main. I want to connect it to like a external receptacle to measure the current of a single device much like kill-a-watt or something similar.
I have a CT rated for less than 60A with output at 0.333Vac. I was looking at the arduino sketch and i was wondering how does setV change? because from the example setv prints
242.62
243.17
242.90
??
Also can you explain the ADCvoltsperdiv= 0.0048? how do we arrive this number and why do we use it?