which one of these will work ??
1.
2.
3.
4.
Also, how many watt resistors should I have to be safe ? Not just talking about the variable ones, but the others as well. currently i have selected 1/8 watts. is that a little low? or is it okay, since the output is going to a relay, not directly to the motors.
And what are the circle things? like the one right next to the bottom left C945 ? Is it a symbol for something I'm forgetting or just nothing, I should ignore it....?
Also, I am thinking the purpose of variable resistance is to correct for LDR errors ? As in both LDRs may not give same resistance at same irradiation, so to fine tune it...
thanks.