Tech-dat/Sensor-dat/Camera-dat/camera-dat.md
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@@ -25,6 +25,9 @@ OV series - [[SCM1008-dat]] - [[SCM1009-dat]] - [[SCM1017-dat]] - [[SCM1024-dat]
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- [[OV7670-dat]] - [[OV2640-dat]] - [[OV5640-dat]] - [[OV7725-dat]]
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27 27
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+## APPS
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+
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+- [[video-RC-car-dat]] - [[video-transmission-dat]]
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## ref
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Tech-dat/Sensor-dat/Camera-dat/cemera-interface-dat/CSI-dat/CSI-dat.md
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+
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+# CSI-dat
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+
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+**CSI (Camera Serial Interface)**
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+
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+Uses a 15-pin MIPI CSI-2 ribbon cable connector.
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+
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+Designed for official Raspberry Pi Camera Modules.
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+
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+Offers high-speed data transfer directly to the Raspberry Pi’s GPU.
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+
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+Supports Raspberry Pi Camera Module v1, v2, and v3, as well as the High-Quality Camera.
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+
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+Provides lower latency and better performance compared to USB.
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+
Tech-dat/Sensor-dat/Camera-dat/cemera-interface-dat/UVC-dat/UVC-dat.md
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@@ -25,4 +25,21 @@ UVC (**USB Video Class**) is a standard that allows USB video devices, such as w
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On Linux, you can check if a device supports UVC with:
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- lsusb | grep -i uvc
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\ No newline at end of file
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+ lsusb | grep -i uvc
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+
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+
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+
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+## USB
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+
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+Works with USB webcams and UVC-compatible cameras.
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+
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+More flexible but may have higher latency and lower performance compared to CSI.
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+
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+Requires drivers if the camera isn't UVC-compliant.
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+
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+
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+## Android APPs
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+
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+USB Camera
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+- https://play.google.com/store/apps/details?id=com.shenyaocn.android.usbcamera&hl=en
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+- https://www.apkmirror.com/apk/%E6%B2%88%E5%9E%9A-shenyao-china/usb-camera/variant-%7B%22minapi_slug%22%3A%22minapi-18%22%7D/
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Tech-dat/cable-dat/cable-dat.md
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+
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+# cable-dat
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+
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+## Weight Comparison
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+
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+| types | Cable Type | Approximate Weight per 100m |
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+| ---------------------- | ------------------------------------------- | --------------------------- |
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+| [[Fiber-Optic-dat]] | **Fiber Optic Cable (Single-Mode, 2-core)** | **≈1-2 kg** |
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+| [[Ethernet-Cable-dat]] | **Ethernet Cable (Cat5e/Cat6 UTP)** | **≈3-5 kg** |
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+| [[coaxial-cable-dat]] | **Coaxial Cable (RG6 or RG59)** | **≈7-10 kg** |
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Tech-dat/cable-dat/coaxial-cable-dat/coaxial-cable-dat.md
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+
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+# coaxial-cable-dat
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+
Tech-dat/cable-dat/fiber-optic-dat/fiber-optic-dat.md
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+
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+# fiber-optic-dat
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+
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+- [[fiber-optic-transceiver-dat]]
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+
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+
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+
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+## demo
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+
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+- https://t.me/electrodragon3/342
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+
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+
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+## ref
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+
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+- [[RJ45-DAT]]
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+
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+- [[fiber-optic]]
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Tech-dat/cable-dat/fiber-optic-transceiver-dat/2025-03-27-17-31-03.png
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Tech-dat/cable-dat/fiber-optic-transceiver-dat/fiber-optic-transceiver-dat.md
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+
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+# fiber-optic-transceiver-dat
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+
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+
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+# fiber-optic-transceiver-dat
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+
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+## sfp transceiver module
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+
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+SFP stands for Small Form-factor Pluggable.
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+
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+It is a compact, hot-pluggable fiber optic transceiver used for data transmission over fiber optic or copper cables.
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+
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+![](2025-03-27-17-31-03.png)
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+
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+
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+## SC module
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+
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+SC stands for Subscriber Connector.
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+
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+SC connectors are a type of fiber optic connector commonly used with fiber optic cables.
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+
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+### Features:
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+
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+Push-pull coupling mechanism: Allows easy insertion and removal of connectors.
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+
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+Duplex design: Typically used in dual-core fiber optic cables (sending and receiving signals).
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+
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+Durable and reliable, often used in telecommunications, data centers, and other long-distance fiber optic links.
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+
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+Size: Relatively large compared to other connectors like LC.
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+
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+## LC module
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+
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+LC stands for Lucent Connector.
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+
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+LC connectors are smaller versions of SC connectors, commonly used in high-density fiber optic applications.
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+
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+### Features:
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+
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+Small form factor: Half the size of SC connectors, making them ideal for space-limited environments like data centers.
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+
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+Latch mechanism: Uses a clip-on design for easy and secure connection.
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+
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+High-density applications: Commonly used in network switches, routers, and patch panels.
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+
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+Fiber types: Can be used with both single-mode and multi-mode fibers.
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+
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+## demo video
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+
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+- https://t.me/electrodragon3/341
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+
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+
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+## ref
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+
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+- [[fiber-optic-dat]]
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Tech-dat/tech-dat.md
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@@ -5,7 +5,7 @@
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- [[BOM-dat]] - [[chip-dat]] - [[chip-cn-dat]] - [[app-dat]]
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-- [[interface-dat]] - [[audio-dat]] - [[sensor-dat]] - [[actuator-dat]]
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+- [[interface-dat]] - [[audio-dat]] - [[sensor-dat]] - [[actuator-dat]] - [[camera-dat]]
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## Circuits
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Tech-dat/video-transmission-dat/video-transmission-dat.md
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- [[WIFI-video-dat]]
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+
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+
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+- [[fiber-optic-dat]]
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+
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+
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## ref
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- [[video-transmission]]
app-dat/recorder-dat/2025-03-27-17-08-35.png
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app-dat/recorder-dat/2025-03-27-17-09-16.png
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app-dat/recorder-dat/recorder-dat.md
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+
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+# recorder-dat
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+
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+## APPs
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+
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+- Surveillance Camera / CCTV Camera / Security Camera / IP Camera
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+
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+## interface
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+
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+
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+### DC Power and BNC Connector (Analog CCTV Cameras)
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+
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+lotus interface == [[BNC-dat]]
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+
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+4-hole connectors may refer to DC power connectors (e.g., 2.1mm/5.5mm DC Jack for power) combined with BNC for video.
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+
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+Often used in analog surveillance cameras.
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+
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+
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+![](2025-03-27-17-09-16.png)
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+
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+### Aviation Connector (M12, GX12, GX16, GX20)
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+
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+- 4 or 5 hole interface == [[GX12-dat]]
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+
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+
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+Often used in CCTV and IP cameras, especially for weatherproof or industrial-grade applications.
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+
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+4-pin, 5-pin, and more variations exist.
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+
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+Also called aviation plugs or circular connectors.
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+
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+Example: GX12-4, GX16-5 (where the number after the dash indicates pin count).
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+
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+
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+![](2025-03-27-17-08-35.png)
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+
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+
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+### M12 Industrial Connector (A-coded, D-coded, X-coded)
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+
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+[[M12-dat]] 4-pin or 5-pin connectors are common in IP67/IP68-rated outdoor cameras.
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+
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+Found in Ethernet-based surveillance cameras (e.g., PoE cameras).
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+
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+Example: M12 A-coded 4-pin for power & data.
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+
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+
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+### RJ45 with PoE (IP Cameras)
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+
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+If the camera is [[PoE-dat]] (Power over Ethernet), the RJ45 (Ethernet) connector might be used, sometimes with a waterproof 4-pin or 5-pin adapter.
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+
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+
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+## Surveillance Camera Extension Solutions (100m - 1000m)
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+
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+If you need to **extend a surveillance camera connection** up to **100 meters or even 1000 meters**, here are the best solutions:
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+
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+### Solutions for Up to 100 Meters:
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+#### 1. Ethernet (PoE – Power over Ethernet)
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+- Uses **Cat5e/Cat6 cables**.
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+- Maximum length: **100 meters** per standard.
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+- Uses **PoE switches/injectors** to power the camera.
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+- If you need more than **100m**, use:
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+ - **PoE Extenders** (each adds ~100m).
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+ - **Fiber optic converters** for longer distances.
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+
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+#### 2. HD-TVI / HD-CVI / AHD over Coaxial Cable
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+
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+- [[coaxial-cable-dat]]
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+
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+- Uses **RG59 or RG6 coaxial cable**.
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+- Can reach up to **300-500 meters** without signal loss.
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+- Requires **baluns or signal boosters** for longer distances.
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+
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+### Solutions for 1000 Meters (1 km) and Beyond:
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+#### 1. Fiber Optic Transmission
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+- **Best for long distances** (up to 20-40 km).
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+- Uses **fiber optic converters** on both ends.
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+- Supports **IP cameras, analog cameras, and PoE**.
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+- Requires **fiber optic cables (single-mode or multi-mode)**.
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+
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+#### 2. Wireless Point-to-Point Transmission
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+- Uses **wireless bridges** (e.g., **Ubiquiti AirFiber, TP-Link Pharos**).
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+- Can extend cameras up to **several kilometers**.
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+- Best for locations where running cables is difficult.
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+
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+#### 3. Coaxial with Signal Amplifiers
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+- For **HD-TVI, HD-CVI, AHD** cameras, **coaxial amplifiers** can push the range up to **1000 meters**.
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+
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+### Best Choice Based on Distance:
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+
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+| Distance | Best Solution |
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+| -------------- | ------------------------------------ |
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+| **<100m** | PoE over Ethernet |
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+| **100-500m** | Coaxial HD-TVI/CVI/AHD with boosters |
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+| **500m-1000m** | Fiber optic or wireless transmission |