How many devices are supported in a Bluetooth mesh by nRF52840 and nRF52833?

[salihonur]

Hi,

How many devices can be meshed in Bluetooth? I see that both NRF52840 and NRF52833 support Bluetooth 5.3. As I know normally v5.3 supports up to 7 devices. Is it same for NRF52840/NRF52833 or less?

We want to mesh 4 devices as a standard + 2 devices optional in an audio project. All devices will talk to each other. We are goingto develop an intercom system from scratch.

[salihonur]

Yes, the leader broadcasts all, but others transmit to the leader only. All devices will have a mic volume threshold. Typically nobody talks at the same time. The person who the leader tells his/her name talks only. Also, a member can talk if there is an urgent case. Somehow, If more than one person starts talking, we will allow one speaker by filtering start time and device ID. Meanwhile the other will be held by a message. All communication is among a group. So no contact will be made with any foreign group. Also, there will be a couple of seconds time limit for a member. So he/she can't occupy so long time.