Hi all.
This is why wifi is stupid for IOT application:
- A growing percentage of the population claim to be EMF sensitive. The Council of Europe discourage its use in primary schools.
- Compared to wired connections it is unreliable. Do you really want that security alarm to be subject to weak batteries or unexpected obstructions/conditions?
- If one is serious about IOT, for example when designing a new building, then all those routers, antennas, power supplies etc will become expensive.
I have searched for solutions to IOT without wifi. Obvious solutions are:
- Serial wired communication. Star or Ring topology.
- Ethernet wired communication. Star or Ring topology.
I found an interesting discussion on wired Ethernet rings here: http://www.roedan.com/category/employee-blogs/chris-blog/
But they use a custom unpublished cirtcuitborad.
It seems to me that a sensible and cheap implementation (and safe?) of IOT communications does not exist.
Can I buy off the shelf wired ethernet intefaces to string all apperture sensors (windows and doors) on a wired network?
How can I send a water level sensor message by ethernet for example?
Perhaps I am wrong but I have searched but not seen it. All offers presuppose use of wifi, which to cover a new building would be very expensive compared to an ethernet ring.
