"Start Stop LCD display time with Arduino"

Dear Friends,
Im a NewBee to Arduino setup,
Kindly help me through the Program.

I am doing a project in which i have three phototransistors , when a ball crosses the light to 1st phototransis. is obstructed , then the lcd connected to Arduino should start counting the time in milliseconds and when a ball cross, light to 3rd Phototransis. is obstructed the lcd should stop and display the time in ms.

Please help me edit this program so that it does the desired.

Many Thanks in Advance :slight_smile:
Greatly Appreciated :slight_smile:

sketch_zero_gravity.ino (1.78 KB)

So, you did not like the answers that you got in your post in Project Guidance? Please do not cross post.

Please help me edit this program so that it does the desired.

Where is your program?

iam new to this website, i had difficulties figuring out where i have to post exactly.

Its ok man. Me too new on this website

"project guidance"

Glad to hear that.