Hello, this is my first time posting on the forum as I generally find solutions to my problems with a bit of research or trial and error.
My current project is the design of a laser 'tripwire' with a gateway design to accurately measure the time lapsed between a starting and finishing point. I have built two gateways, one start and one finish, with laser dot diodes and photoresistors to create a trigger when breached.
My original plan was to find a wireless method, which I attempted with a Bluetooth module, but timing restrictions required me to design a wired backup which relies on only one Arduino. To achieve wireless communication with accurate timekeeping, I have two issues that I cannot seem to solve: synchronizing timing between two separate Arduino modules, most likely nanos, and finding a wireless method that maintains an error range beneath one second.
I no longer have any timing restrictions on my project as I do have a working wired model, but I do not enjoy wasting wire and solder when a $0.30 solution might be available.
Any help would be sincerely appreciated.
