Board-dat/SCM/SCM1030-dat/SCM1030-dat.md
... ...
@@ -170,6 +170,7 @@ GPIO PINS: (from alanesq/esp32cam-demo) - [[sd-dat]]
170 170
171 171
- default factory firmware demo [[ai-thinker_ESP32-CAM_DIO_V1.0_20180825.bin]]
172 172
173
+- [[camera-dat]]
173 174
174 175
- [[SCM1030]]
175 176
- https://wiki.ai-thinker.com/esp32-cam
Tech-dat/Sensor-dat/sensor-motion-dat/RCWL-sensor-dat/RCWL-sensor-dat.md
... ...
@@ -1,70 +0,0 @@
1
-
2
-# RCWL-sensor-dat
3
-
4
-
5
-The RCWL microwave sensor is a motion detection sensor that uses microwave Doppler radar technology.
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-
7
-It emits microwave signals and detects changes caused by moving objects, such as people or animals.
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-
9
-The RCWL sensor is commonly used for non-contact motion sensing in lighting, security, and automation systems.
10
-
11
-It can detect motion through certain materials (like plastic or glass) and works in various lighting conditions.
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-
13
-
14
-
15
-
16
-## Advantages of RCWL Sensors Compared to PIR Sensors
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-
18
-### 1. Detects Through Objects
19
-- **RCWL Advantage**: Uses microwave Doppler radar technology, allowing it to detect motion through non-metallic materials like glass, wood, or plastic. Ideal for hidden or enclosed setups.
20
-- **PIR Limitation**: Relies on detecting infrared radiation (heat) and requires a direct line of sight. Cannot "see" through objects.
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-
22
----
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-
24
-### 2. Greater Sensitivity and Range
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-- **RCWL Advantage**: Longer detection range (up to 7–10 meters or more) and higher sensitivity to small movements.
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-- **PIR Limitation**: Limited range of about 3–5 meters and less effective at detecting subtle motion.
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-
28
----
29
-
30
-### 3. Less Affected by Small Animals
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-- **RCWL Advantage**: Less likely to flag small animals (e.g., birds, flies, spiders) as it detects motion based on Doppler shift rather than heat.
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-- **PIR Limitation**: Prone to false positives from heat signatures of small animals or insects.
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-
34
----
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-
36
-### 4. Wider Field of Detection
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-- **RCWL Advantage**: Can provide 360-degree motion detection if unobstructed, making it more versatile for wide-area monitoring.
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-- **PIR Limitation**: Typically has a narrower field of view (about 120 degrees) and requires proper alignment.
39
-
40
----
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-
42
-### 5. Faster Response Time
43
-- **RCWL Advantage**: Detects motion almost instantly using electromagnetic waves.
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-- **PIR Limitation**: May have a slight delay as it relies on detecting changes in infrared radiation.
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-
46
----
47
-
48
-### 6. Compact and Cost-Effective
49
-- **RCWL Advantage**: Small, inexpensive, and simple to use with microcontrollers like ESP32 or Arduino. Requires fewer external components (e.g., no Fresnel lens).
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-- **PIR Limitation**: Bulkier due to the Fresnel lens and may cost more depending on the model.
51
-
52
----
53
-
54
-### Use Cases for RCWL Sensors
55
-- **Hidden or Enclosed Motion Detection**: Detecting motion through walls, ceilings, or casings.
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-- **Small and Efficient Devices**: Consumes ~2.5 mA, making it energy-efficient.
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-- **Applications in Noisy or Dynamic Environments**: Less affected by environmental noise like sunlight or temperature changes.
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-
59
----
60
-
61
-### Limitations of RCWL Compared to PIR
62
-1. **Susceptible to Interference**: May detect unintended motion from fans, machinery, or large metallic objects.
63
-2. **Higher False Positives in Open Areas**: Microwave signals can reflect off surfaces and detect motion in adjacent rooms.
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-3. **More Power Consumption**: While still efficient (~2.5 mA), it consumes more power than some PIR sensors (~50 µA).
65
-
66
----
67
-
68
-### Summary
69
-- **RCWL Sensors**: Better for hidden, long-range, and sensitive motion detection.
70
-- **PIR Sensors**: Better for simple, line-of-sight applications where heat-based detection suffices.
Tech-dat/Sensor-dat/sensor-motion-dat/sensor-motion-dat.md
... ...
@@ -7,6 +7,8 @@
7 7
8 8
## Sensor Comparison Table
9 9
10
+- [[sensor-radar-dat]]
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+
10 12
| | **PIR** | **RCWL** | **Radar** | **Lidar** |
11 13
| ----------------- | ------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------- |
12 14
| **Features** | - Detects infrared radiation from warm objects<br>- Simple motion sensor | - Microwave Doppler radar<br>- Detects motion through some materials | - Uses radio waves<br>- Measures distance, speed, direction | - Uses laser pulses<br>- Creates 3D maps<br>- High accuracy |
... ...
@@ -86,8 +88,6 @@ Tilt sensors are often used for horizontal measurement in systems. Based on thei
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## ref
88 90
89
-- [[sensor]]
90
-
91
-- [[motion-sensor]]
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+- [[sensor]] - [[motion-sensor]] - [[m]]
92 92
93 93
Tech-dat/Sensor-dat/sensor-motion-dat/sensor-radar-dat/2025-07-18-16-32-53.png
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Tech-dat/Sensor-dat/sensor-motion-dat/sensor-radar-dat/2025-07-18-16-33-15.png
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Tech-dat/Sensor-dat/sensor-motion-dat/sensor-radar-dat/sensor-RCWL-dat/sensor-RCWL-dat.md
... ...
@@ -0,0 +1,70 @@
1
+
2
+# RCWL-sensor-dat
3
+
4
+
5
+The RCWL microwave sensor is a motion detection sensor that uses microwave Doppler radar technology.
6
+
7
+It emits microwave signals and detects changes caused by moving objects, such as people or animals.
8
+
9
+The RCWL sensor is commonly used for non-contact motion sensing in lighting, security, and automation systems.
10
+
11
+It can detect motion through certain materials (like plastic or glass) and works in various lighting conditions.
12
+
13
+
14
+
15
+
16
+## Advantages of RCWL Sensors Compared to PIR Sensors
17
+
18
+### 1. Detects Through Objects
19
+- **RCWL Advantage**: Uses microwave Doppler radar technology, allowing it to detect motion through non-metallic materials like glass, wood, or plastic. Ideal for hidden or enclosed setups.
20
+- **PIR Limitation**: Relies on detecting infrared radiation (heat) and requires a direct line of sight. Cannot "see" through objects.
21
+
22
+---
23
+
24
+### 2. Greater Sensitivity and Range
25
+- **RCWL Advantage**: Longer detection range (up to 7–10 meters or more) and higher sensitivity to small movements.
26
+- **PIR Limitation**: Limited range of about 3–5 meters and less effective at detecting subtle motion.
27
+
28
+---
29
+
30
+### 3. Less Affected by Small Animals
31
+- **RCWL Advantage**: Less likely to flag small animals (e.g., birds, flies, spiders) as it detects motion based on Doppler shift rather than heat.
32
+- **PIR Limitation**: Prone to false positives from heat signatures of small animals or insects.
33
+
34
+---
35
+
36
+### 4. Wider Field of Detection
37
+- **RCWL Advantage**: Can provide 360-degree motion detection if unobstructed, making it more versatile for wide-area monitoring.
38
+- **PIR Limitation**: Typically has a narrower field of view (about 120 degrees) and requires proper alignment.
39
+
40
+---
41
+
42
+### 5. Faster Response Time
43
+- **RCWL Advantage**: Detects motion almost instantly using electromagnetic waves.
44
+- **PIR Limitation**: May have a slight delay as it relies on detecting changes in infrared radiation.
45
+
46
+---
47
+
48
+### 6. Compact and Cost-Effective
49
+- **RCWL Advantage**: Small, inexpensive, and simple to use with microcontrollers like ESP32 or Arduino. Requires fewer external components (e.g., no Fresnel lens).
50
+- **PIR Limitation**: Bulkier due to the Fresnel lens and may cost more depending on the model.
51
+
52
+---
53
+
54
+### Use Cases for RCWL Sensors
55
+- **Hidden or Enclosed Motion Detection**: Detecting motion through walls, ceilings, or casings.
56
+- **Small and Efficient Devices**: Consumes ~2.5 mA, making it energy-efficient.
57
+- **Applications in Noisy or Dynamic Environments**: Less affected by environmental noise like sunlight or temperature changes.
58
+
59
+---
60
+
61
+### Limitations of RCWL Compared to PIR
62
+1. **Susceptible to Interference**: May detect unintended motion from fans, machinery, or large metallic objects.
63
+2. **Higher False Positives in Open Areas**: Microwave signals can reflect off surfaces and detect motion in adjacent rooms.
64
+3. **More Power Consumption**: While still efficient (~2.5 mA), it consumes more power than some PIR sensors (~50 µA).
65
+
66
+---
67
+
68
+### Summary
69
+- **RCWL Sensors**: Better for hidden, long-range, and sensitive motion detection.
70
+- **PIR Sensors**: Better for simple, line-of-sight applications where heat-based detection suffices.
Tech-dat/Sensor-dat/sensor-motion-dat/sensor-radar-dat/sensor-radar-dat.md
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@@ -7,3 +7,47 @@
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**A lidar sensor** uses laser light to measure distances by emitting pulses and detecting their reflections. It creates high-resolution 3D maps of environments and is widely used in autonomous vehicles, robotics, and mapping. Lidar is more precise for shape and surface detection but can be affected by weather and lighting.
9 9
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+
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+## radar sensor
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+
13
+the coverage
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+
15
+![](2025-07-18-16-32-53.png)
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+
17
+![](2025-07-18-16-33-15.png)
18
+
19
+
20
+
21
+## FMCW Radar
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+
23
+millimeter wave radar == 毫米波雷达
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+
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+-频率：24G-24.25GHz
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+-扫频带宽：25OMHz(符合CE/FCC认证标准)
27
+-调制方式：FMCW
28
+-探测角度：±60°
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+-检测距离：存在&微动5m/运动7m(Typ.)
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+-距离分辨率：0.15m(Typ.)
31
+-供电电压：3.3V(Typ.)
32
+-外形尺寸：20×20mm
33
+-环境温度：-40C~+85°℃
34
+-数据格式：串口ASCII输出
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+-接口形式：默认2.54mm×5Pin
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+
37
+
38
+Here’s a comparison between RCWL and FMCW radar sensors:
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+
40
+RCWL (e.g., RCWL-0516) is a low-cost microwave motion sensor, typically using Doppler radar at 3.2GHz. It detects motion by measuring changes in reflected waves, but cannot measure distance or speed precisely. It’s mainly used for simple motion detection (e.g., lighting, alarms).
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+
42
+FMCW (Frequency Modulated Continuous Wave) millimeter wave radar (e.g., LD2402) operates at higher frequencies (24GHz). It emits a frequency-modulated signal and analyzes the frequency shift of the reflected wave to measure distance, speed, and even detect micro-movements. FMCW radars are more advanced, offering precise range and velocity detection, and are used in automotive, industrial, and security applications.
43
+
44
+Summary:
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+
46
+RCWL: Simple, cheap, motion detection only, no distance/speed info.
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+FMCW: Advanced, precise, detects distance, speed, and micro-movements.
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+
49
+
50
+
51
+## ref
52
+
53
+- [[motion-sensor-dat]]
... ...
\ No newline at end of file
Tech-dat/sensor-camera-dat/Camera-dat.md
... ...
@@ -10,6 +10,8 @@
10 10
11 11
- [[camera-analog-dat]] - [[camera-digital-dat]] - [[camera-action-dat]]
12 12
13
+- [[camera-SDK-dat]]
14
+
13 15
## boards
14 16
15 17
- [[ESP1000-dat]]
... ...
@@ -43,7 +45,28 @@ OV series boards - [[SCM1008-dat]] - [[SCM1009-dat]] - [[SCM1017-dat]] - [[SCM10
43 45
44 46
- [[SONY-dat]]
45 47
46
-## selection table
48
+### more cameras
49
+
50
+| model | max resolution | color type | output format | Len Size |
51
+| --- | --- | --- | --- | --- |
52
+|OV2640 |1600 x 1200 |color |YUV(422/420)/YCbCr422 / RGB565/555 / 8-bit compressed data / 8/10-bit Raw RGB data| 1/4"|
53
+|OV3660 |2048 x 1536 |color |raw RGB data / RGB565/555/444 / CCIR656 / YCbCr422 / compression| 1/5"|
54
+|OV5640 |2592 x 1944 |color |RAW RGB / RGB565/555/444 / CCIR656 / YUV422/420 / YCbCr422 / compression| 1/4"|
55
+|OV7670 |640 x 480 |color |Raw Bayer RGB / Processed Bayer RGB / YUV/YCbCr422 / GRB422 / RGB565/555 |1/6"|
56
+|OV7725 |640 x 480 |color |Raw RGB / GRB 422 / RGB565/555/444 / YCbCr 422| 1/4"|
57
+|NT99141| 1280 x 720 |color |YCbCr 422 / RGB565/555/444 / Raw / CCIR656 / JPEG compression |1/4"|
58
+|GC032A |640 x 480 |color |YUV/YCbCr422 / RAW Bayer / RGB565 |1/10"|
59
+|GC0308 |640 x 480 |color |YUV/YCbCr422 / RAW Bayer / RGB565 /Grayscale |1/6.5"|
60
+|GC2145 |1600 x 1200 |color| YUV/YCbCr422 / RAW Bayer / RGB565 |1/5"|
61
+|BF3005 |640 x 480 |color |YUV/YCbCr422 / RAW Bayer / RGB565 |1/4"|
62
+|BF20A6 |640 x 480 |color |YUV/YCbCr422 / RAW Bayer / Only Y |1/10"|
63
+|SC101IOT| 1280 x 720 |color |YUV/YCbCr422 / Raw RGB| 1/4.2"|
64
+|SC030IOT| 640 x 480 |color |YUV/YCbCr422 / RAW Bayer |1/6.5"|
65
+|SC031GS| 640 x 480 |monochrome |RAW MONO / Grayscale |1/6"|
66
+|HM0360 |656 x 496 |monochrome |RAW MONO / Grayscale |1/6"|
67
+|HM1055 |1280 x 720 |color |8/10-bit Raw / YUV/YCbCr422 / RGB565/555/444 |1/6"|
68
+
69
+### selection table
47 70
48 71
![](2025-07-13-01-58-00.png)
49 72
Tech-dat/sensor-camera-dat/camera-SDK-dat/camera-SDK-dat.md
... ...
@@ -0,0 +1,18 @@
1
+
2
+# camera-SDK-dat
3
+
4
+## repro
5
+
6
+- https://github.com/alanesq/esp32cam-demo
7
+- https://github.com/espressif/esp32-camera
8
+- https://github.com/yoursunny/esp32cam
9
+
10
+
11
+## dependency
12
+
13
+- [[freeRTOS-dat]]
14
+
15
+
16
+## ref
17
+
18
+- [[camera-dat]]
... ...
\ No newline at end of file