Heat-Fleeing Robot

I was looking over at the mousebot, and came up with a design for a heat-fleeing robot. My idea is to use two LM35 sensors, each with a two stage amplifier (using an LM324 IC). The amplified signal from each one, will drive a separate motor, and will form a small machine, with differential steering. I will keep you posted, and I will post a schematic, once I get it working.