I’m new in Arduino and try to find my way thought programming.
I want to measure how many seconds (milli) a car is driving between point 1 and point 2 (points are laserbeams and a LDR-S When the LDR output of point 1 shows a number <200 then a stopwatch has to start shown the stopwatch starttime on a lcd i2c (on row 1). When the car drives thought point 2 (also a laserbeam and a LDR) the stopwatch time has to stop.
Who knows how to programm this or is there somewhere a written code. I found some codes but the have to many parameters