I have an outdoor lighting transformer that is controlled by an LDR. Unfortunately there is no adjustment for sensitivity. I would like to modify the circuit (no schematic is available) to add a sensitivity pot. Based on some of the research I've done (I'm an electronics novice) it seems like I need a comparitor circuit of some type. What I'd like to do is have a circuit that would use the same LDR and provide 0 resistance when the desired light level is reached and very large resistance when it is dark. That way I can wire it in directly in place of the LDR without worrying about the rest of the original circuit (time functions etc.). Any ideas?