Just out of curiosity, are you doing this to learn about Bluetooth Mesh, or do you actually have a large area you want to cover? If the latter, how large is it?
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Just out of curiosity, are you doing this to learn about Bluetooth Mesh, or do you actually have a large area you want to cover? If the latter, how large is it?