Submitted by TrystanLea on Tue, 02/02/2010 - 16:32.
Hey Steven, I see the mistake I made on the page, sorry yes the sketch should just output a fixed 230.
This sketch should do that: http://openenergymonitor.org/emon/sites/default/files/CTmethod.pde
The ADCvoltsperdiv= 0.0048 is the ADC voltage range (0 to 5V) divided by the ADC resolution 1023. ADCvoltsperdiv = 5V / 1023 = 0.0048
If you dont want to measure the whole house, the easiest way to measure from an outlet, is to get a small extension cable or 4-bank and take a small section of the outer sleeving off the cable leaving the 3 inner cables with their insulation sleeving intact. Only do this if your completely happy you know what your doing. The picture at the top of the page shows what I mean.
Hey Steven, I see the mistake
Hey Steven, I see the mistake I made on the page, sorry yes the sketch should just output a fixed 230.
This sketch should do that:
http://openenergymonitor.org/emon/sites/default/files/CTmethod.pde
The ADCvoltsperdiv= 0.0048 is the ADC voltage range (0 to 5V) divided by the ADC resolution 1023. ADCvoltsperdiv = 5V / 1023 = 0.0048
If you dont want to measure the whole house, the easiest way to measure from an outlet, is to get a small extension cable or 4-bank and take a small section of the outer sleeving off the cable leaving the 3 inner cables with their insulation sleeving intact. Only do this if your completely happy you know what your doing. The picture at the top of the page shows what I mean.