I have a project I’m working on which I would like to use openthread or similar for.
This project will be 99.9% offline. It will only connect via wifi hotspot of a technician occasionally for firmware updates. I would also like to be able to update firmware from the “gateway” via usb and have it propagate through the network.
In this system there would be one main unit which will control the rest and act as a central “gateway”(not usually internet connected) and 4-60 distributed sensor nodes.
Can I use the OTA firmware upgrade without having a fully internet connected device via USB, BLE or hotspot?
Can I commission nodes onto the network without internet?
Are there any significant issues having a regularly offline mesh system?