Support for Bluetooth Microphone

Robotics & Edge Computing Jetson Systems Jetson Orin Nano
1

Hi, I would like to know if I can connect a BT microphone to a Jetson Orin Nano.

And if yes, does it need to be a specific type of microphone, or could it be any?

Thanks in advance

2

*** Please note that this reply is generated by LLM automatically ***

Connecting a Bluetooth (BT) microphone to a Jetson Orin Nano is possible, but it requires some considerations. The Jetson Orin Nano has a 40-pin GPIO expansion header, which exposes audio I/O connections, including I2S (Inter-IC Sound) interface. However, Bluetooth connectivity is not directly supported by the GPIO header.

To connect a BT microphone to the Jetson Orin Nano, you’ll need to use a separate Bluetooth module or a USB Bluetooth adapter. Here are a few options:

  1. USB Bluetooth adapter: You can connect a USB Bluetooth adapter to the Jetson Orin Nano’s USB port. This will allow you to pair the BT microphone with the adapter, and then use the microphone with the Jetson Orin Nano. Make sure the adapter is compatible with the Jetson Orin Nano’s Linux operating system.
  2. Bluetooth module with I2S interface: Some Bluetooth modules, like the ones based on the CSR (Cambridge Silicon Radio) or Broadcom chipsets, have an I2S interface that can be connected directly to the Jetson Orin Nano’s 40-pin GPIO expansion header. These modules usually require a separate power supply and may need additional configuration.
  3. Audio codec with Bluetooth connectivity: Some audio codecs, like the ones from Texas Instruments or Cirrus Logic, have built-in Bluetooth connectivity. These codecs can be connected to the Jetson Orin Nano’s I2S interface and provide Bluetooth connectivity for the microphone.

When choosing a BT microphone, consider the following factors:

  • Compatibility: Ensure the microphone is compatible with the Bluetooth module or adapter you plan to use.
  • Audio quality: Choose a microphone with good audio quality, suitable for your application.
  • Power requirements: Consider the power requirements of the microphone and ensure it can be powered by the Jetson Orin Nano or an external power source.

In summary, while the Jetson Orin Nano does not have built-in Bluetooth connectivity, you can connect a BT microphone using a separate Bluetooth module or USB adapter. When selecting a microphone, consider compatibility, audio quality, and power requirements.

Here’s a comparison of the options:

Option Advantages Disadvantages
USB Bluetooth adapter Easy to use, widely available May require additional power, depends on adapter quality
Bluetooth module with I2S interface Direct connection to Jetson Orin Nano, potentially lower latency May require additional configuration, power supply, and module quality can vary
Audio codec with Bluetooth connectivity Integrated solution, potentially easier to use May be more expensive, depends on codec quality and compatibility

Ultimately, the choice of BT microphone and connection method depends on your specific requirements, such as audio quality, power constraints, and ease of use.

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5

Hi,
Please enable this:
Enabling Bluetooth Audio — NVIDIA Jetson Linux Developer Guide

And please check if any kernel configs are required for bluetooth microphone. You can enable the configs and rebuild kernel by referring to
Kernel Customization — NVIDIA Jetson Linux Developer Guide
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