Hello,
I am in search of a device capable of using Bluetooth to connect with a smartphone and serve as its primary sound source on demand. This device should function similarly to conventional Bluetooth headphones, which automatically become the phone's sound output upon activation. However, this device should differ in that it transmits the audio signal to an amplifier via a jack, SPDIF, or similar connection. Alternatively, it could be an integrated amplifier that directly sends the signal to passive speakers.
The control of this process should be manageable through an API such as MQTT, REST, MODBUS, or similar. Are you aware of any devices that operate in this manner?
The concept is as follows: upon entering the bathroom, I would press a wall-mounted switch. This switch would send a signal to the Bluetooth device, prompting it to connect to my smartphone and seamlessly continue playing the audiobook I am currently listening to. Instead of using the phone's speakers, it would seamlessly start playing through ceiling-mounted speakers.
Many thanks