Arduino Lap Timer System

The goal is to turn an Arduino into reliable timing equipment for track-day cars. I already know the core requirement: precise lap timing triggered by track-side sensors, with each lap time shown live on an attached LCD screen so drivers can see their results as they pass the pit wall... (Budget: ₹8000 - ₹10000 INR, Jobs: Arduino, C Programming, Circuit Design, Electronics, Embedded Systems, Microcontroller, PCB Layout, Sensor Integration)