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Known Issues

Firmware

Unreliable UART protocol

The cameras Raspberry Pi currently relies on its PL011 UART to receive packets, but due to underlying implementation problems in the driver and the UART hardware itself, this is not reliable at 8MBaud. We are planning to route all UART packets through the MCU to make this more reliable - all time-critical packets are already handled exclusively by the MCU. Until this has been implemented, there might be rare packet drops leading to misconfigured cameras or failure to start streaming entirely.

Controller Shared Packet Stalling

The controller has a complex queueing system to distribute UART packets from 8 ports to (potentially multiple) USB interrupt endpoints, often split up in chunks.
Shared Packets, as part of that system, may currently "stall" (be stuck in writing state) and fill up the queue. This shows as "SharedFull" errors by the controller and is currently being investigated.

Hardware

Slight whirring in the camera

The camera currently exhibits a slight whirring noise, likely some form of coil whine. This is only audible very close to the camera, and we are investigating the specific source of the noise and hope to eliminate it in a future version.

OV9281 Pixel Instability

During development it was discovered that the OV9281 has an inherent hardware fault, which can cause pixel instability at high pixel-to-pixel contrasts. This has been verified using modules from other manufacturers and using standard software. It is not detrimental to tracking quality but requires extra care when focusing the lenses, by essentially focusing the lenses well past the intended tracking range - a slight blur is intended and does not noticeably harm tracking quality beyond limiting how close markers can be together.
The only way to address this involves finding another camera sensor with similar specs but no such problems.

Server Software

Camera Calibration Reconstruction may fail

The reconstruction needs further work to reliably support larger setups that have disjointed views. While this is being worked on, please contact me (Seneral) if you encounter such situations, both to see if it can't be reconstructed normally, and if not, to reprioritise this multi-room support.