bluetooth2usb

Use a Raspberry Pi to add Bluetooth capabilities to a USB device.

bluetooth2usb.py receives data from a Bluetooth connection and writes that data to a connected USB device byte-for-byte.

It can be used to convert a simple USB printer to a Bluetooth capable one.

Usage

1. Download and copy bluetooth2usb.py to your Raspberry Pi.
2. Modify the constant values USB_DEVICE_ID_VENDOR, USB_DEVICE_ID_PRODUCT, BLUETOOTH_SERVER_ADDRESS, LED_PIN at the top of the file as necessary.
3. Run bluetooth2usb.py.
4. To run it on boot, follow the instruction at the official Raspberry Pi docs to install it as a systemd service. Example .service file can be found at bluetooth2usb.service.
5. Connect a USB device and a Bluetooth client to the Pi.
6. Send Bluetooth data from the client to the Pi. The connected USB device should receive the same data.

LED Behavior

• Slowly blinking (0.2 s on, 0.8 s off): Waiting for a USB device to be connected.
• Quickly blinking (0.1 s on, 0.1 s off): Waiting for a Bluetooth connection.
• Continuously on: Everything is connected and waiting for Bluetooth data.
• Quickly blinking twice while on: Received and wrote data.