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BLE broadcaster

Hello,

I am quite new to BLE.
I would like the Keyfob to send messages when I press a key, without establishing a connection. Is it possible for the USB dongle to receive these messages without being scanning?

The usb dongle is already connected to another keyfob.

In the final application, I'd like to have a first keyfob connected to the usb dongle and another sending messages to the usb dongle without being connected.

I tried fooling around with simpleBLEbroadcaster with no results.

Thank you.

Fabien