Extend bluetooth control reach and control local arduino.

[a0zzy]

As a very long time user of home assistant, room assistant is amazing and helpful. I came across it when looking to solve a specific problem that it does not seem to support yet. That problem is local device control and bluetooth extension. I use bluetooth intergrations for a small handful of things, my switchbot door lock, Oral-B toothbrushs, ETC. Some of these things like the switchbot really only either work over bluetooth compared to having to use their cloud based stuff which is no bueno. For device control extension, I am thinking being able to interface with a arduino in a room without having to make the arduino into another wifi device or using a raspberry pi which is overkill.

My two use cases are;
1, using an Oral-B toothbrush, as my bathroom is no where near my home assistant server I can imagine the toothbrush would not be able to reach the home assistant server via bluetooth. So having a room assistant device in my bathroom that would detect my presence and connect the toothbrush to my home assistant would be awesome.
2, being able to connect an arudino to my home assistant without having to make the arudino a network device, like connecting the arduino to the room assistant over a usb serial bridge maybe. I have a WiZ light bulb (I would 100% recommend they are AMAZING) in my bedside lamp and I would like to be able to continue to use the pull cord to toggle it, so I am planning on connecting a raspi pico to the switch and have it send a signal to home assistant when I pull it to turn off the light.

If this is reasonable and possible, I would LOVE to contribute to the implimentation. I am a 16 year old student and I need experience of working on projects such as these to pickup knowledge and progress my career. I know how to program languages like javascript and typescript and I'm learning python.

[a0zzy]

I have realized I can use an ESP32 to acomplish the task of fixing the lamp pull cord.