Technically speaking, there is only 1 ground i this whole circuit, no matter how things are shuffled up.
The arduino is powered by the 12v wall wart, so there is 1 ground for the whole circuit...
One more thing, I recently came across an AtTiny 2313, which has enough input output pins for this purpose. I actually wanted to use attiny 85. but i need 6+2 pins for proper controlling. which the attiny 2313 has.
should i go for arduino nano or attiny 2313??
does load-shedding affect the ssr's negetively??
Can someone also help me with a model number for the TVS diode? apparently i cant find any here named zd1 online..
regardless, i have ordered all 3( nano, 85, 2313) of em, as i wish to play around.
I do realize that there may be ways of multiplexing to reduce the number of pins required. But i would like to avoid that, Unless, they provide any benefit over the latter..
(I dont have a programmer, so i use the nano as a programmer for the attinies)
This might be a silly question, But is it plausible to use a 12v liniear regulator lm7812 with the filter capacitors and heatsink as the surge protector?afaik, surges last for a very short time.
!! I will definetely go with the circuit suggested, this is just a noob-ish question i cant seem to find the answer for!!