I've been looking for something to track race times at my track for some time. Unfortunately, the fabulous finish lines on the market are very expensive for me.
Luckily thanks to this program called Scratch, which I have been using for a few days, I have managed to program a timer that when it starts, when a traffic light is displayed, gives us the acoustic and visual signal that we activate the exit door manually, Then, when the car passes the finish line, it is detected by a webcam that acts as a motion sensor in a specific area (finish line) that stops the clock.
I did some quick tests and in principle it is functional although I have to adjust some things to get the best precision.
I have not had more time to continue with the project, I will upload some photos and videos when I can.
I forgot to mention that what was necessary for this project was a laptop, the Scratch program and a webcam connected to the PC.
Greetings and excuse my English from Google