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I'm working on a project; that needs to send data from the two Arduinos using two Bluetooth Module (One using HC-06 and the other using HC-05) to Raspberry PI 3 B; so that the RPi 3 need to connect to two Bluetooths at once, Thank you.

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  • what have you tried? ... what problem are you facing?
    – jsotola
    Jun 4, 2022 at 17:49
  • i can connect only one module on the default chanel, when i tried to do the same for the other Bluetooth module it gives me that is not possible to connect it and give me "Can't connect RFCOMM socket: Connection refused" as response !
    – RUSH MANIA
    Jun 5, 2022 at 0:58
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    you need to add a bluetooth USB dongle to your Raspberry Pi for connecting to a second bluetooth device
    – jsotola
    Jun 5, 2022 at 1:22

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This program (btferret) and library will connect to multiple Bluetooth devices simultaneously https://github.com/petzval/btferret. Section 3.3 in the documentation covers HC-05 connections.

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