i want to make a project usign one or several pics (maybe the old pic16f84) to do a car that responde to light patterns from a light source. the car is already done and works with three tires, two od them controlled by motors and one independent. The responses to the light will be the: - if the light source is getting close to the car it will run backwards and its speed will be according to the approach speed of the light - if the light is getting further the car will follow the light of course is speed will be determined by the speed of the car my question is. giving the fact that i have to get a derivative. what is the easiest way of achiving this with the pic's asm language. or what other approach may i use. -- View this message in context: http://www.nabble.com/light-follower-t1614325.html#a4376186 Sent from the MicroControllers - PIC forum at Nabble.com. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist