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eufy Security Video Doorbell E340 (Battery Powered) With HomeBase S380 (HomeBase 3), Dual Cameras with Delivery Guard, 2K Full HD and Color Night Vision, No Monthly Fee
eufy Security Video Doorbell E340 (Battery Powered) With HomeBase S380 (HomeBase 3), Dual Cameras with Delivery Guard, 2K Full HD and Color Night Vision, No Monthly Fee
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  • $788.99
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    Argosphere Dual-Lens 360° Panoramic Video Module, Sony IMX477 Sensors, 28.05 FPS Real-Time Stitching, 33ms Latency, V4L2 & Web HTTP MJPEG Output

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    • -Dual-Lens 360° Panorama: Equipped with dual Sony IMX477 HQ sensors and back-to-back 220° fisheye lenses, providing a full 360-degree field of view with a 40-degree spatial overlap zone.
    • -Software Frame Synchronization: Utilizes a libcamera-based software Master-Slave Phase-Locked Loop (PLL) mechanism to dynamically adjust frame cycles, achieving dual-camera timing variance under 100 s without physical synchronization cables.
    • -GPU-Accelerated Zero-Copy Pipeline: Raw NV12 frames are bound directly to GPU memory via DMABUF zero-copy mapping, performing grid mesh fusion and EGL rendering in a single pass to achieve 28.05 FPS steady-state performance.
    • -Real-Time Low Latency Processing: Delivers an end-to-end rendering latency of 33 ms (GPU single-frame fusion in 2729.5 ms) utilizing distance-transform Gaussian seam feathering (5055 px).
    • -Flexible Access & Integration: Supports web browser MJPEG streaming via HTTP (port 8080) and standard V4L2 virtual camera nodes (/dev/videoX) for integration into Linux-based systems.
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    Product Features

    Dual-Lens 360° Panorama: Equipped with dual Sony IMX477 HQ sensors and back-to-back 220° fisheye lenses, providing a full 360-degree field of view with a 40-degree spatial overlap zone.

    Software Frame Synchronization: Utilizes a libcamera-based software Master-Slave Phase-Locked Loop (PLL) mechanism to dynamically adjust frame cycles, achieving dual-camera timing variance under 100 s without physical synchronization cables.

    GPU-Accelerated Zero-Copy Pipeline: Raw NV12 frames are bound directly to GPU memory via DMABUF zero-copy mapping, performing grid mesh fusion and EGL rendering in a single pass to achieve 28.05 FPS steady-state performance.

    Real-Time Low Latency Processing: Delivers an end-to-end rendering latency of 33 ms (GPU single-frame fusion in 2729.5 ms) utilizing distance-transform Gaussian seam feathering (5055 px).

    Flexible Access & Integration: Supports web browser MJPEG streaming via HTTP (port 8080) and standard V4L2 virtual camera nodes for integration into Linux-based systems.




    ItemSpecification
    Compute platformHigh-performance embedded compute platform (8 GB RAM)
    Operating systemLinux 64-bit (Linux 6.6 kernel), pure headless DRM/GBM EGL rendering
    Image sensorsDual Sony IMX477 HQ cameras, CSI-2 wired to both mainboard CAM ports
    OpticsDual M12-mount 220° fisheye lenses, 13 mm baseline back-to-back
    Lens distortion modelEquidistant fisheye (r = f·) + Kannala-Brandt 4th-order radial polynomial
    FOV & overlap220° ultra-wide, 40° spatial overlap
    Input resolution1536 × 1536 (fast profile) / 2028 × 1520 (native profile)
    Panorama output2048 × 1024 (standard 2:1 equirectangular), native mode configurable to 4096 × 2048
    Steady-state frame rate28.05 FPS (rated 30 FPS); high-res native profile 18 ~ 20 FPS
    End-to-end latency33 ms (GPU single-frame render 27 ~ 29.5 ms)
    Sync offset< 100 s (measured min -2 s) via libcamera software master-slave PLL
    Sync methodNo physical sync cable and no external trigger chip; frame period trimmed dynamically
    Seam handlingDistance-transform Gaussian feathering 55 px (fast) / 50 px (native), optimal midline auto-located
    Spherical mesh180 × 360 lat-long slices, 65,341 vertices, 129,600 triangles
    Capture formatNV12 (Y / UV dual plane), libcamera native DMABUF zero-copy mapping
    Render output formatBGRA / BGR (channel order straight from the shader)
    Streaming & accessWeb HTTP MJPEG (port 8080), V4L2 virtual camera node, direct frame tap for algorithms / recording
    Form factorPrototype unit (final enclosure per project)



    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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    Return Policies

    • Return for refund within: 30 days
    • Return for replacement within: 30 days
    • This item is covered by XSTRIVE Return Policy

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