Board-dat/NWL/NWL1016-dat/NWL1016-dat.md
... ...
@@ -3,4 +3,7 @@
3 3
4 4
- [[NWL1017-dat]]
5 5
6
-RF-LINK RF ASK OOK Wireless Transmitter Receiver Pair [Frequency]
... ...
\ No newline at end of file
0
+[RF-LINK RF ASK OOK Wireless Transmitter Receiver Pair [Frequency]](https://www.electrodragon.com/product/433m-rf-wireless-module-a-pair-of-receiver-and-transmitter/)
1
+
2
+
3
+- [[RF-Link-dat]]
... ...
\ No newline at end of file
Board-dat/NWL/NWL1017-dat/NWL1017-dat.md
... ...
@@ -1,6 +1,6 @@
1 1
2 2
# NWL1017-dat
3 3
4
-RF-LINK RF ASK OOK Wireless Transmitter Receiver Pair [Frequency]
4
+[RF-LINK RF ASK OOK Wireless Transmitter Receiver Pair [Frequency]](https://www.electrodragon.com/product/433m-rf-wireless-module-a-pair-of-receiver-and-transmitter/)
5 5
6 6
- [[RF-Link-dat]]
... ...
\ No newline at end of file
Board-dat/NWL/NWL1068-dat/NWL1068-dat.md
... ...
@@ -1,4 +1,7 @@
1 1
2 2
# NWL1068-dat
3 3
4
-refer to page [[NWL1070-dat]]
... ...
\ No newline at end of file
0
+refer to page [[NWL1070-dat]]
1
+
2
+
3
+- [[NWL1068-dat]] - [[NWL1070-dat]] - 433/315 mhz
... ...
\ No newline at end of file
Board-dat/NWL/NWL1070-dat/NWL1070-dat.md
... ...
@@ -7,6 +7,9 @@
7 7
8 8
![](2025-06-25-15-06-03.png)
9 9
10
+
11
+- [[NWL1068-dat]] - [[NWL1070-dat]] - 433/315 mhz
12
+
10 13
## Features
11 14
12 15
- sensitivity == -110dBm；
... ...
@@ -26,4 +29,6 @@ On board Decoder, support and match with other encoder chip like
26 29
27 30
## ref
28 31
29
-- [[RF-link-dat]]
... ...
\ No newline at end of file
0
+- [[RF-link-dat]]
1
+
2
+- [[NWL1070]] - [[NWL1068]]
... ...
\ No newline at end of file
Board-dat/SCU/SCU1012-DAT/2025-12-05-19-28-38.png
... ...
Binary files /dev/null and b/Board-dat/SCU/SCU1012-DAT/2025-12-05-19-28-38.png differ
Board-dat/SCU/SCU1012-DAT/2025-12-05-19-29-18.png
... ...
Binary files /dev/null and b/Board-dat/SCU/SCU1012-DAT/2025-12-05-19-29-18.png differ
Board-dat/SCU/SCU1012-DAT/2025-12-05-19-29-35.png
... ...
Binary files /dev/null and b/Board-dat/SCU/SCU1012-DAT/2025-12-05-19-29-35.png differ
Board-dat/SCU/SCU1012-DAT/2025-12-05-19-31-30.png
... ...
Binary files /dev/null and b/Board-dat/SCU/SCU1012-DAT/2025-12-05-19-31-30.png differ
Board-dat/SCU/SCU1012-DAT/SCU1012-DAT.md
... ...
@@ -1,7 +1,65 @@
1
-
2 1
# SCU1012-dat
3 2
4 3
5
-- https://www.electrodragon.com/product/mg995-servo-motor-13kg-torque/
4
+
5
+## Info
6
+
7
+[product url - MG996R Servo Motor, 12KG High Torque](https://www.electrodragon.com/product/mg995-servo-motor-13kg-torque/)
8
+
9
+
10
+all metal gears / 13KG.cm torque /
11
+
12
+![](2025-12-05-19-31-30.png)
13
+
14
+
15
+### Board Map, Dimension, Pins, chip info, Use Guide, Setup Jumper, etc.
16
+
17
+
18
+
19
+![](2025-12-05-19-28-38.png)
20
+
21
+## Applications, categories, tags
22
+
23
+- Biped robots, robotic hands, RC cars
24
+- Suitable for fixed-wing model aircraft: 50–90 class methanol models and 26–50 cc gasoline fixed-wing models
25
+
26
+## Demo code and video
27
+
28
+- [[servo-dat]]
29
+
30
+
31
+## MG995 / MG996R — Metal Gear High-Torque Servo
32
+
33
+MG995 / MG996R are metal-gear servos with high torque suitable for RC cars, boats, robots and larger model aircraft.
34
+
35
+### Specifications
36
+
37
+| Item | Specification |
38
+|---|---|
39
+| Model | MG995 / MG996R |
40
+| Gear material | Metal (copper) gears |
41
+| Cable length | 30 cm (Signal = yellow, V+ = red, GND = brown) |
42
+| Dimensions (L×W×H) | 40.7 × 19.7 × 42.9 mm |
43
+| Weight | 66.2 g |
44
+| No-load speed | 0.17 s / 60° @ 4.8 V; 0.13 s / 60° @ 6.0 V |
45
+| Stall torque (working torque) | 13 kg·cm |
46
+| Deadband | 4 µs |
47
+| Connector | JR / FUTABA compatible |
48
+| Operating voltage | 3.0–7.2 V |
49
+| Operating temperature | -30 to +60 °C |
50
+| Accessories included | Servo horns, mounting screws, vibration-damping sleeves, aluminum adapter |
51
+
52
+## Accessories
53
+
54
+![](2025-12-05-19-29-18.png)
55
+
56
+![](2025-12-05-19-29-35.png)
57
+
58
+## ref
59
+
60
+
61
+- [legacy wiki page](https://www.electrodragon.com/w/Servo)
62
+
63
+
6 64
7 65
- [[SCU1012]]
... ...
\ No newline at end of file
Network-dat/RC-dat/RC-dat.md
... ...
@@ -15,7 +15,7 @@
15 15
16 16
17 17
18
-
18
+- [[rc-kits-dat]]
19 19
20 20
## ref
21 21
Network-dat/RF-dat/RF-LINK-dat/RF-LINK-dat.md
... ...
@@ -35,7 +35,7 @@ Clasic RF LINK
35 35
36 36
## Receiver == EDRF1 and EDRF2 Decoder
37 37
38
-- [[NWL1089-dat]] == EDRF1
38
+- [[NWL1089-dat]] == EDRF1 (retired)
39 39
40 40
- [[NWL1068-dat]] / [[NWL1070-dat]] == EDRF2
41 41
Network-dat/wifi-dat/WIFI-DAT.md
... ...
@@ -13,6 +13,7 @@
13 13
14 14
- [[WIFI6-dat]]
15 15
16
+- [[wifi-distance-dat]]
16 17
17 18
## cheatsheet
18 19
... ...
@@ -55,6 +56,10 @@
55 56
56 57
57 58
59
+## wifi distance
60
+
61
+
62
+
58 63
59 64
60 65
Network-dat/wifi-dat/wifi-distance-dat.md
... ...
@@ -0,0 +1,97 @@
1
+
2
+# wifi-distance-dat.md
3
+
4
+Long-Distance Wi-Fi — Best Antennas and Maximum Range
5
+
6
+Below is the previous information rewritten cleanly in English Markdown.
7
+
8
+---
9
+
10
+# 🥇 Current Maximum Practical Wi-Fi Range (Real-World Achievable)
11
+
12
+With legal transmission power:
13
+
14
+### **2.4 GHz + High-Gain Directional Antennas (Point-to-Point)**
15
+- 24–30 dBi parabolic dish antennas
16
+- 20–30 dBm transmit power
17
+- Full clear line-of-sight
18
+
19
+👉 **Typical range: 10–30 km**
20
+👉 **Under ideal conditions: 50+ km**
21
+
22
+These are *point-to-point* wireless links, not normal routers.
23
+
24
+---
25
+
26
+# 🥈 Longest Range You Can Buy Commercially (Legal Power)
27
+
28
+| Scenario | Hardware | Realistic Range |
29
+|---------|----------|-----------------|
30
+| Long-distance point-to-point | Ubiquiti NanoBeam / LiteBeam | 1–5 km |
31
+| High-gain parabolic antennas | Ubiquiti RocketDish | 10–30 km |
32
+| Standard omni Wi-Fi router | Typical router antenna | 100–300 m |
33
+| Upgraded omni antennas (7–12 dBi) | High-gain stick antenna | 200–600 m |
34
+
35
+---
36
+
37
+# 🧭 Four Factors That Decide Maximum Wi-Fi Distance
38
+
39
+## 1. **Antenna Gain = Distance**
40
+Higher gain = longer reach
41
+Best antennas for extreme distance:
42
+
43
+### **Parabolic Dish Antennas**
44
+- 24–30 dBi
45
+- Very narrow beam (2°–7°)
46
+- Massive boost to link budget
47
+
48
+Every +3 dBi ≈ **1.4× range increase**.
49
+
50
+---
51
+
52
+## 2. **2.4 GHz travels farther than 5 GHz**
53
+- Longer wavelength
54
+- Better penetration
55
+- Better diffraction
56
+
57
+Best choice for long range: **2.4 GHz**
58
+
59
+---
60
+
61
+## 3. **Line-of-Sight Is Critical**
62
+For long distance links you need:
63
+
64
+✔ Enough height
65
+✔ Zero trees/buildings
66
+✔ Clean Fresnel zone
67
+
68
+No line-of-sight → no long-distance Wi-Fi.
69
+
70
+---
71
+
72
+## 4. **Your receiver matters too**
73
+Phones = weak antennas (0–3 dBi)
74
+CPE devices = strong antennas (8–15 dBi)
75
+
76
+For multi-km links → **use CPE on both ends**.
77
+
78
+---
79
+
80
+# 🏆 Best Practical Setups
81
+
82
+## For **1–5 km**
83
+- **Ubiquiti LiteBeam** (23 dBi)
84
+- Point-to-point alignment
85
+
86
+---
87
+
88
+## For **10–30 km**
89
+- **Ubiquiti Rocket + RocketDish (27–30 dBi)**
90
+- Full line-of-sight
91
+- Fast, stable link
92
+
93
+---
94
+
95
+## For **200–600 m general outdoor Wi-Fi**
96
+- 7–12 dBi omni antennas
97
+- Outdoor AP (UniFi Mesh)
... ...
\ No newline at end of file
Tech-dat/acturator-dat/motor-dat/servo-dat/servo-dat.md
... ...
@@ -4,6 +4,12 @@
4 4
5 5
- [[peripherals-dat]]
6 6
7
+- [[PWM-dat]]
8
+
9
+
10
+
11
+
12
+
7 13
8 14
9 15
## feature of servos
... ...
@@ -23,8 +29,9 @@
23 29
24 30
## products
25 31
26
-- Micro servo - [[SCU1030-DAT]] - [[SCU1031-dat]]
27
-- MG995 micro servo - [[SCU1012-DAT]]
32
+- Micro servo - [[SCU1030-DAT]] - [[SCU1031-dat]] == SG90 / MG90
33
+
34
+- MG995 / MG996R micro servo - [[SCU1012-DAT]]
28 35
29 36
30 37
These servo models differ primarily in terms of gear material, torque, and rotation angle.
app-dat/RC-apps-dat/RC-kits-dat/RC-kits-dat.md
... ...
@@ -12,7 +12,7 @@
12 12
- [[rc-kits-dat]] - [[diy-materials-dat]]
13 13
14 14
15
-basic RC link - [[rc-link-dat]]
15
+basic RC link - [[rf-link-dat]]
16 16
17 17
18 18
![](2025-12-04-00-13-11.png)
app-dat/RC-apps-dat/rc-aircraft-dat/rc-aircraft-dat.md
... ...
@@ -50,6 +50,26 @@ The angle adjustingof the flaperon isfor the airplane state,and the adjustingof
50 50
screw-pitch is forhelicopter state.
51 51
52 52
53
+
54
+
55
+## concept
56
+
57
+### Differential-Thrust Aircraft (Differential Control)
58
+
59
+“Differential” aircraft use the thrust difference between left and right propulsion units (usually motor + propeller) to control direction. This control method is called differential thrust.
60
+
61
+#### What is a differential-thrust aircraft?
62
+A differential-thrust aircraft does not rely on a conventional rudder to turn. Instead, it produces a yaw moment by creating a thrust difference between the left and right motors/propellers.
63
+
64
+#### How it works
65
+- Left thrust > Right thrust → aircraft yaws right
66
+- Right thrust > Left thrust → aircraft yaws left
67
+- Left thrust = Right thrust → aircraft flies straight
68
+
69
+This is similar to the steering method used by twin-motor RC boats or differential-drive
70
+
71
+
72
+
53 73
## ref
54 74
55 75
- [[RC-dat]] - [[airplane]] - [[RC]]
... ...
\ No newline at end of file