USB Peripherals

Tested USB Wi-Fi and Bluetooth adapters, and USB camera EMI on GPS.

Applies to every ARK Jetson carrier. Adapters below were tested against the ARK Jetson Kernel.

Wi-Fi Adapters

Wi-Fi Adapter	Status
Edimax Wi-Fi 4 802.11n Adapter	Working with rtl8xxxu driver
TP-Link TL-WN725N	Module exists in kernel but is missing driver
TP-Link AX1800	Does not work. No kernel driver in 5.15
TP-Link AC1300	Does not work. No kernel driver in 5.15

Bluetooth Adapters

Bluetooth Adapter	Status
TP-Link UB500	Working with btusb driver
UGREEN 5.3 Bluetooth Adapter	No driver exists in 5.15 for the Actions ATS2851 chipset

USB Cameras and GPS

USB 3.0 signalling emits broadband EMI overlapping the GPS L1, L2, and L5 bands. It raises the noise floor enough to degrade or prevent GPS lock.

Use a USB 2.0 camera where possible. If not, shield the cable and connectors with faraday tape.

Before flight testing:

1. Measure the noise floor across the GPS bands with the camera active, using a GPS receiver with spectrum monitoring or a spectrum analyzer.

2. Shield the cable, connectors, and exposed sections with faraday/EMI tape if interference is severe.

3. Re-measure to confirm the noise floor recovered.

See this post from Alex Klimaj.