Tech-dat/Sensor-dat/Camera-dat/camera-dat.md
... ...
@@ -22,6 +22,30 @@ OV series - [[SCM1008-dat]] - [[SCM1009-dat]] - [[SCM1017-dat]] - [[SCM1024-dat]
22 22
23 23
- [[OV7670-dat]] - [[OV2640-dat]] - [[OV5640-dat]] - [[OV7725-dat]]
24 24
25
+
26
+
27
+### Standard Camera Output that Can Be Read by Android
28
+
29
+- [[UVC-dat]] - [[CSI-dat]] - [[HDMI-dat]]
30
+
31
+1. **USB Video Class (UVC):**
32
+ A standard for transmitting video over USB connections. Many external webcams and cameras use this standard, which Android devices can read directly if the appropriate app or support is in place.
33
+
34
+2. **MIPI-CSI (Mobile Industry Processor Interface - Camera Serial Interface):**
35
+ A standard for connecting cameras to mobile processors. Android devices use this for built-in cameras, and it requires a specific interface and drivers.
36
+
37
+3. **RTSP/HTTP Stream (for IP cameras):**
38
+ If using an IP camera or a camera connected to a network, Android devices can receive video through a network stream (RTSP/HTTP). Specific apps are needed to view the stream.
39
+
40
+4. **HDMI Output:**
41
+ Some Android devices with HDMI-in capabilities can receive video signals via HDMI (usually using a USB-C to HDMI adapter or specific equipment).
42
+
43
+5. **Camera API (for internal phone cameras):**
44
+ Android provides its own camera API (Camera2 API) for controlling and processing video feeds from the internal cameras.
45
+
46
+For external camera integration, using a UVC-compatible device or an IP camera with a network stream would be the most straightforward ways to transmit video data that Android can read.
47
+
48
+
25 49
## ref
26 50
27 51
- [[camera-dat]] - [[omni-vision-dat]]
Tech-dat/video-transmission-dat/video-transmission-dat.md
... ...
@@ -0,0 +1,9 @@
1
+
2
+# video-transmission-dat
3
+
4
+
5
+
6
+
7
+- [[video-transmission]]
8
+
9
+
app-dat/Apocalypse-dat/Apocalypse-dat.md
... ...
@@ -0,0 +1,6 @@
1
+
2
+# Apocalypse-dat
3
+
4
+- [[Emergency-Radio-dat]] - [[ESS-dat]]
5
+
6
+- [[thermal-imaging-dat]]
app-dat/Apocalypse-dat/ESS-dat/ESS-dat.md
... ...
@@ -0,0 +1,4 @@
1
+
2
+# ESS-dat
3
+
4
+Energy storage system (ESS)
... ...
\ No newline at end of file
app-dat/Apocalypse-dat/Emergency-Radio-dat/Emergency-Radio-dat.md
... ...
@@ -0,0 +1,98 @@
1
+
2
+# Emergency-Radio-dat
3
+
4
+
5
+
6
+An emergency radio for a post-apocalyptic survival environment should have the following features:
7
+
8
+- NOAA Weather Alerts: Ability to receive NOAA (National Oceanic and Atmospheric Administration) weather alerts to stay informed about severe weather conditions.
9
+- Localized Programming: Ability to be programmed for the specific region to receive local emergency alerts.
10
+- Multiple Alert Types: Ability to receive various emergency alerts, such as natural disasters and man-made disasters.
11
+- Durability: Rugged and durable to withstand harsh environments.
12
+- Battery Life: Long battery life or the ability to use multiple power sources, such as solar power or hand-crank generators.
13
+- Portability: Compact size for easy carrying.
14
+- Multi-Band Support: Support for multiple bands, such as AM/FM/SW, to receive more information.
15
+- Encrypted Communication: Ability to encrypt communication to protect communication security.
16
+
17
+
18
+Based on the document you provided, the Midland - WR120B - NOAA Emergency Radio seems to have some of the above features, such as NOAA weather alerts, localized programming, and multiple alert types.
19
+
20
+
21
+
22
+
23
+## features
24
+
25
+
26
+### Multi-band Signal Transmission and Reception
27
+
28
+#### Features:
29
+- Supports simultaneous reception of VN bands and U/U bands.
30
+- Supports simultaneous reception of UNV bands and VIU bands.
31
+- Ultra-wideband reception provides a broader signal range.
32
+
33
+#### Explanation:
34
+
35
+##### 1. Multi-band Signal Transmission and Reception
36
+- This refers to a system capable of transmitting and receiving signals across multiple frequency bands simultaneously.
37
+- Unlike single-band systems, multi-band capability allows for more flexible and efficient signal processing.
38
+
39
+##### 2. Supports Simultaneous Reception of VN Bands and U/U Bands
40
+- **VN bands** and **U/U bands** refer to specific frequency ranges.
41
+- "U/U" suggests that two separate U-band signals can be received simultaneously, improving parallel processing capabilities.
42
+- This feature enhances the system’s ability to handle multiple signals without interference.
43
+
44
+##### 3. Supports Simultaneous Reception of UNV Bands and VIU Bands
45
+- **UNV** and **VIU** represent additional specific frequency bands.
46
+- The system can process these bands simultaneously, ensuring seamless and efficient signal reception.
47
+
48
+##### 4. Ultra-wideband Reception Provides a Broader Signal Range
49
+- **Ultra-wideband (UWB)** technology allows for the reception of a wider frequency spectrum.
50
+- A broader signal range means the system can detect and process signals over a wider range of frequencies.
51
+- This is beneficial for applications such as communications, radar, and spectrum monitoring.
52
+
53
+#### Application Scenarios:
54
+- **Wireless Communications:** Multi-band support ensures stable and high-speed data transmission.
55
+- **Radar Systems:** Improved target detection and tracking through multi-band reception.
56
+- **Satellite Communications:** Handling multiple frequency bands enhances data reception from different satellite sources.
57
+- **Spectrum Monitoring:** Broad signal reception enables better detection of signals across a wide frequency range.
58
+
59
+
60
+## Frequency Band Terminology
61
+
62
+- [[VHF-dat]] - [[UHF-dat]]
63
+
64
+| Band Name | Possible Meaning | Frequency Range | Common Applications |
65
+| ------------ | ------------------------------------------------ | ------------------------------------- | ------------------------------------------------------------- |
66
+| **VN Band** | Very Narrowband (VN) | Likely a small segment within VHF/UHF | IoT, telemetry, industrial automation |
67
+| **U/U Band** | Dual Ultra High Frequency (UHF) bands | 300 MHz – 3 GHz | TV broadcasts, mobile phones, GPS, two-way radios |
68
+| **UNV Band** | Combination of UHF, Narrowband, and VHF | 30 MHz – 3 GHz | Aviation, radio broadcasting, marine communication |
69
+| **VIU Band** | Hybrid of VHF, Intermediate frequencies, and UHF | 30 MHz – 3 GHz | Military, emergency response, telemetry |
70
+| **UWB Band** | Ultra-Wideband (UWB) | 3.1 GHz – 10.6 GHz | High-precision positioning, radar, short-range communications |
71
+
72
+**Note:** The definitions of VN, U/U, UNV, and VIU bands are not standard and may be specific to a particular device or manufacturer. Always refer to official documentation for precise frequency allocations.
73
+
74
+
75
+## Reception and Transmission Frequency Ranges
76
+
77
+- **A/B Reception Frequency Range:**
78
+ - 136-174MHz
79
+ - 400-520MHz
80
+
81
+- **B Reception Frequency Range:**
82
+ - 0.5-1.8MHz (AM Radio)
83
+ - 2.3-30MHz (AM Radio)
84
+ - 64-108MHz (AM Radio)
85
+ - 113-137MHz (Aviation Band)
86
+
87
+- **Transmission Frequency Range:**
88
+ - 136-174MHz
89
+ - 400-520MHz
90
+
91
+- **Channel Spacing:** 2.5/5/6.25/10/12.5/15/20/25/50/100KHz
92
+- **Frequency Stability:** ±2.5PPM (14°F to 140°F [-10°C to +60°C])
93
+- **Automatic Repeater Offset:** ±600KHz (144MHz), ±5MHz (430MHz)
94
+
95
+
96
+## ref
97
+
98
+- [[Emergency-Radio]]
... ...
\ No newline at end of file
app-dat/Apocalypse-dat/thermal-imaging-dat/thermal-imaging-dat.md
... ...
@@ -0,0 +1,4 @@
1
+
2
+# thermal-imaging-dat
3
+
4
+- [[thermal-imaging]]
... ...
\ No newline at end of file
app-dat/RC-dat/RC-car-dat/2025-03-25-15-00-18.png
... ...
Binary files /dev/null and b/app-dat/RC-dat/RC-car-dat/2025-03-25-15-00-18.png differ
app-dat/RC-dat/RC-car-dat/2025-03-25-15-00-49.png
... ...
Binary files /dev/null and b/app-dat/RC-dat/RC-car-dat/2025-03-25-15-00-49.png differ
app-dat/RC-dat/RC-car-dat/2025-03-25-15-01-11.png
... ...
Binary files /dev/null and b/app-dat/RC-dat/RC-car-dat/2025-03-25-15-01-11.png differ
app-dat/RC-dat/RC-car-dat/2025-03-25-15-02-19.png
... ...
Binary files /dev/null and b/app-dat/RC-dat/RC-car-dat/2025-03-25-15-02-19.png differ
app-dat/RC-dat/RC-car-dat/RC-car-dat.md
... ...
@@ -0,0 +1,15 @@
1
+
2
+# RC-car-dat
3
+
4
+![](2025-03-25-15-02-19.png)
5
+
6
+![](2025-03-25-15-01-11.png)
7
+
8
+
9
+![](2025-03-25-15-00-49.png)
10
+
11
+![](2025-03-25-15-00-18.png)
12
+
13
+## ref
14
+
15
+- [[RC-car]]
... ...
\ No newline at end of file
app-dat/RC-dat/RC-dat.md
... ...
@@ -0,0 +1,2 @@
1
+
2
+# RC-dat
... ...
\ No newline at end of file
app-dat/RC-dat/video-RC-car-dat/2025-03-25-14-43-46.png
... ...
Binary files /dev/null and b/app-dat/RC-dat/video-RC-car-dat/2025-03-25-14-43-46.png differ
app-dat/RC-dat/video-RC-car-dat/2025-03-25-14-48-15.png
... ...
Binary files /dev/null and b/app-dat/RC-dat/video-RC-car-dat/2025-03-25-14-48-15.png differ
app-dat/RC-dat/video-RC-car-dat/2025-03-25-14-48-28.png
... ...
Binary files /dev/null and b/app-dat/RC-dat/video-RC-car-dat/2025-03-25-14-48-28.png differ
app-dat/RC-dat/video-RC-car-dat/video-RC-car-dat.md
... ...
@@ -0,0 +1,19 @@
1
+
2
+# video-RC-car-dat
3
+
4
+
5
+- [[camera-dat]] - [[RC-car-dat]] - [[video-transmission-dat]]
6
+
7
+
8
+
9
+![](2025-03-25-14-43-46.png)
10
+
11
+![](2025-03-25-14-48-15.png)
12
+
13
+![](2025-03-25-14-48-28.png)
14
+
15
+
16
+
17
+## ref
18
+
19
+- [[video-RC-car]] - [[RC-car]]
... ...
\ No newline at end of file
app-dat/app-dat.md
... ...
@@ -23,7 +23,7 @@
23 23
24 24
## ideas
25 25
26
-- [[home-plant-dat]]
26
+- [[home-plant-dat]] - [[Apocalypse-dat]] - [[video-RC-car-dat]]
27 27
28 28
## done
29 29