Quote:
Originally Posted by scottorious
So I have recently fallen in love with micro controllers, especially picaxe and I have built a device that counts the infrared pulses from my digital meter and does a calculation and then displays that result every 15 seconds. Each pulse from the meter is supposedly supposed to tell me that I used one watt hour so. I am working on making it wireless to be more convenient but thus far its pretty slick. I just figured out a way to data log onto my computer also so I can graph a days worth of data to see if I can figure out where I can cut. If anyone is interested I can go into more detail or share the circuit and coding for all of it.
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Lucky you -- I wish I had some ability with electronics.
If I am understanding you correctly, your calculation for watts will be
3600*pulses/15.
That leaves quite a range for error. You might be better off counting pulses for say two minutes at a time.