the electricity meter in my house doesn't give me live power consumption figures it only blinks an LED every 1000th of a KWh.
so i need to make my arduino watch an LDR and measure the time between blinks.
then to work out the power consumption by doing
7.82 seconds between blinks * 1000 /60 ./60 = 2.17222
1000/2.17 = 460W
im not sure at all how to do math in arduino lol
any help would be appreciated.
lol i just worked out that i can just do time /3600 instead of all that
3600 / 7.82 = 460w
so i just need to time the LDR now