alt Hacker NewsMicrocontrollers that support BLE are getting so cheap this really is becoming an option. Hopefully with some button that activates it.
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dzhiurgis • today at 4:24 AM
Home Assistant and it’s relative esphome just added serial-proxy support. Basically you can use any esp32 board to add smart capabilities for old devices via serial port.
RFCOMM is old Bluetooth, not BLE.
Nordic has a serial-over-ble profile, but it is not standard like RFCOMM.