Used miners will work fine; I used to have an S3 back about a year ago, sadly with the halving, increased difficulty and the energy prices in my area it is not profitable at all at this point, so unless you have free electric from lets say your parents paying for it, or if you rent and your landlord pays utilities or you dorm somewhere or your in a hotel or if you have solar or wind power in your backyard then it can be a little profitable
Solar and wind really isn't worth the investment either; most of the time, repair and damage to the generator from weather will cost you a lot more than just using electricity. You can look around, lots of people on this forum have looked at alternative energy, but it really doesn't work on a small scale.Yeap, i was thinking of investing into solar panels but after some comparing with prices and possible earnings, i wouldnt see profit for a litle longer time here.
