I would like to make an easy-switch bluetooth application similar to the Logitech K811 keyboard. I am able to get bluetooth connection between my Arduinos but would like to have a button that switches between PC, iPad and Arduino. Similar to the Logitech K811 keyboard.
How are they able to switch to different bluetooth devices without the bluetooth setup? I would like to achieve the same thing. How can I start? Can I use 2.4Ghz RF (Nrf24L01-2.4GHz) as well?
https://www.logitech.com/en-us/product/illuminated-keyboard-for-mac-ipad-iphone
It should be possible with multiple configuration using auto-connect. You probably already kbnow how to do that, but you can write NRF24s out. They can only talk amongst themselves. Since you mention iPad, you will be obliged to use a BT4 device.
Thank you very much Nick. Do you mind explaining more about multiple configuration using auto-connect? How can I implement this? I am thinking of using button interrupts, but my question is there a method to set up auto-connect on the PC side without all the Blue tooth setup.
I can't comment much as I don't know much about BT4, but I believe the connection process is much the same as HC-0x. The principle is here: Multiple configuration is done by Arduino handling the bluetooth power supply.
http://www.martyncurrey.com/connecting-2-arduinos-by-bluetooth-using-a-hc-05-and-a-hc-06-pair-bind-and-link/
Everything would be done at the Arduino end, whereby it would connect by selection, or simply to whichever was available.