Mesh Networked timing system

Good [localTime],

I'm trying to design a race timing system that communicates wirelessly among 7 devices (IR Detector start/finish lines, 5-digit 7 segment displays, and a control device to reset the system) and a controlling laptop.

The system should function without having internet access....

I'm looking at the 33 IoT Nanos as the connectivity, but worry that the IoT Cloud programming is cloud hosted. Is there a way to move this to a local host (the laptop) when the project is ultimately deployed?

Thanks!
Anthony

You don't say how far the distance between nodes, but you might consider using ESP devices like the Wemos D1 Mini or NodeMCU and communicate using ESPNow.

The greatest distance in the whole system is about 100ft of open space.

This could be minimized by hub placement.