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As I know Bluetooth masters can be connected up to 7 slaves at once. What happens if there are 8 or 9 slaves trying to connect and send data to the master? Is there any collision algorithm like CDMA?

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Well. I found my own answer. Pairing bluetooth does not enable other slaves to connect, so no algorithm is required.

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  • \$\begingroup\$ still, collisions do happen and crash software apps and firmware on embedded devices. For instance on ESP32 Mcus \$\endgroup\$ Apr 22, 2023 at 9:23

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