Maximum number of elements under advertise

[Xavi]

Hello,

I want to develop small modules with smart BLE that only sends advertise every 2seconds.

Do you think that the Central module can see all peripherals if the installation is composed by 100 modules sending advertise?

Thanks! Xavier

[Stian Røed Hafskjold]

This is a pretty rough calculation, but it might give you an idea: For a full 31 byte payload the radio is advertising for about 3ms on 3 different channels, or 1 ms per channel. 100 devices would then advertise for a total of 100ms per channel per advertising interval. This equals 5% of the time if the interval is 2 seconds. So the probability of packet collision is pretty low. Also, after a few advertising intervals all of them will go through eventually. Of course this also depends on noise from other 2.4GHz sources, like WiFi.