Board-dat/SDR/SDR1125-dat/SDR1125-dat.md
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@@ -50,6 +50,8 @@ purple box
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## SDK
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+- [[motor-driver-design-dat]] - [[motor-driver-dat]] - [[motor-driver-rc-dat]] - [[ESC-dat]]
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+
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- [[ELRS-dat]]
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control [[RC-dat]] setup
Tech-dat/acturator-dat/motor-dat/motor-shaft-dat/motor-shaft-dat.md
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@@ -1,24 +0,0 @@
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-
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-# motor-shaft-dat
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-
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-## D-Shaped
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-
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-### 🔧 1. D-Shaped Clamping Hub (Best Balance of Strength + Simplicity)
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-
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-Why: The flat face prevents slipping; the clamp applies even pressure all around the shaft without damaging it.
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-
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-Torque Handling: Very good — suitable for most high-torque hobby and light industrial setups.
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-
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-
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-### 2. D-Shaft Gear/Pulley with Dual Set Screws
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-Why: Set screws bite into the flat and round sides of the shaft. Dual screws reduce slippage.
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-
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-Torque Handling: Medium-high (depends on the hub material and screw torque).
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-
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-## Key Type == 键槽联轴器
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-
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-
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-
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-## ref
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-
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-- [[flange-dat]] - [[mechanics-dat]]
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\ No newline at end of file
Tech-dat/acturator-dat/motor-driver-dat/motor-driver-dat.md
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@@ -2,7 +2,7 @@
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# motor-driver-dat
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-- [[motor-driver-dat]]
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+- [[motor-driver-dat]] - [[motor-driver-design-dat]]
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- [[motor-brushed-dat]] - [[motor-driver-dc-dat]]
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Tech-dat/acturator-dat/motor-driver-dat/motor-driver-design-dat/motor-driver-design-dat.md
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@@ -6,7 +6,7 @@
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- [[battery-dat]] - [[motor-driver-design-dat]] - [[battery-discharge-dat]]
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-
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+- [[SDR1125-dat]]
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fab-mechanics-dat/mechanical-parts-dat/bracket-dat/2026-07-01-00-47-42.png
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Binary files /dev/null and b/fab-mechanics-dat/mechanical-parts-dat/bracket-dat/2026-07-01-00-47-42.png differ
fab-mechanics-dat/mechanical-parts-dat/bracket-dat/bracket-dat.md
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# bracket-dat
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+
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+- [[bracket-dat]] - [[bracket-l-dat]]
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+
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## Angle bracket / Corner bracket / L-bracket / Angle iron
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Corner Bracket
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-![](2026-01-08-03-50-38.png)
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\ No newline at end of file
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+![](2026-01-08-03-50-38.png)
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+
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+
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+bracket - L
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+
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+![](2026-07-01-00-47-42.png)
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+
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+## ref
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\ No newline at end of file
fab-mechanics-dat/mechanical-parts-dat/gear-dat/gearbox-dat/gearbox-dat.md
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@@ -2,7 +2,7 @@
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# gearbox-dat
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-
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+- [[gearbox-miter-dat]]
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- [[gear-dat]] - [[gear-worm-dat]] - [[gearbox-dat]]
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fab-mechanics-dat/mechanical-structure-dat/Shaft-dat/Shaft-dat.md
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@@ -1,6 +1,8 @@
1 1
# Shaft-dat
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3 3
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+- [[shaft-dat]] - [[shaft-motor-dat]] - [[motor-dat]] - [[shaft-driven-dat]] - [[shaft-coupler-dat]]
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+
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- [[shaft-dat]] - [[tube-dat]] - [[rod-dat]]
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- [[mechanical-structure-dat]] - [[materials-dat]]
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@@ -8,11 +10,11 @@
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- [[shaft-connection-dat]]
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10 12
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-- [[tube-bend-dat]]
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+- [[tube-bend-dat]] - [[tube-dat]]
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13 15
- [[shaft-dat]] - [[tube-lean-dat]] - [[tube-copper-dat]] - [[tube-oval-dat]] - [[tube-PVC-dat]] - [[tube-steel-square-dat]]
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-
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+- [[bracket-dat]]
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## dimension
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@@ -116,6 +118,13 @@ How to make it safer
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![](2026-03-01-01-20-20.png)
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+
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+## systems
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+
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+- Kee Klamp
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+
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+
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+
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## ref
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- [[rod-system-dat]]
fab-mechanics-dat/mechanical-structure-dat/Shaft-dat/shaft-driven-dat/shaft-driven-dat.md
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+
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+
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+
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+# shaft-driven-dat
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+
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+- [[shaft-dat]] - [[shaft-motor-dat]] - [[motor-dat]] - [[shaft-driven-dat]]
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+
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+To achieve the most secure and reliable connection, transmission shafts primarily use the following arrangements, ranked from highest to lowest in terms of fastening strength and impact resistance:
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+
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+### 1. Keyed Shaft + Key —— First choice for high torque and heavy loads
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+This is the standard fastening method for industrial and heavy-duty applications.
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+
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+* **Structure:** A keyway is milled into the transmission shaft, and the coupling bore also features a corresponding keyway. A flat metal key is inserted between them.
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+* **Why it's secure:** It provides **Positive Engagement** (mechanical interlocking). Torque is transmitted rigidly through the sides of the metal key. As long as the key is not sheared, circular slippage between the shaft and the coupling is impossible.
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+* **Recommended matches:** Typically used with clamping-style keyed couplings, combining the rigid lock of the key with the 360-degree grip of the clamp.
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+
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+### 2. Smooth Shaft + Expansion Sleeve / Heavy-Duty Clamping Coupling —— First choice for high precision and reverse impact resistance
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+Ideal if you require extremely high transmission precision (zero backlash) or frequent high-speed forward and reverse rotation.
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+
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+* **Structure:** The transmission shaft is a high-precision cylindrical smooth shaft (such as a linear guide or precision ground shaft) without any grooves or flats.
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+* **Why it's secure:** Used with expansion or high-torque clamping couplings. Instead of relying on a single screw point, the coupling deforms uniformly to "hug" the shaft 360 degrees.
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+* **Advantages:** Because there are no keyway clearances, it won't produce metal clanking or backlash during frequent direction changes. Stress distribution is extremely uniform, providing the best fatigue resistance.
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+
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+### 3. D-Shaft (or Flat Shaft / Blind Hole) —— Medium/low load, cost-effective solution
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+Regular smooth shafts can easily slip under load if used with standard set-screw couplings.
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+
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+* **Structure:** A flat surface is milled or ground into the contact area of the shaft (D-shaft), or a shallow pit (blind hole) is drilled into it.
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+* **Why it's secure:** This allows the coupling's set screw (grub screw) to press directly against the flat or sit inside the hole. The screw acts as a "pin," providing a mechanical stop rather than relying solely on friction.
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+
30
+---
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+
32
+### 🛠️ Why Threaded Shafts are Not Recommended for Transmission
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+Using a threaded shaft as a power transmission component has significant drawbacks:
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+
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+1. **Directional Limitation:** Threads are inherently unidirectional. If the shaft reverses, the connection can loosen instantly. Even with single-direction rotation, inertia from sudden braking can cause the assembly to spin off.
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+2. **Poor Concentricity:** It is difficult to guarantee that two shafts connected by threads are perfectly coaxial. This leads to severe vibration (shaking) at high speeds, accelerating the failure of bearings and couplings.
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+
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+
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+
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+
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+## ref
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+
fab-mechanics-dat/mechanical-structure-dat/Shaft-dat/shaft-motor-dat/shaft-motor-dat.md
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@@ -0,0 +1,27 @@
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+
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+# shaft-motor-dat
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+
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+
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+- [[shaft-dat]] - [[shaft-motor-dat]] - [[motor-dat]] - [[shaft-driven-dat]]
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+
7
+## D-Shaped
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+
9
+### 🔧 1. D-Shaped Clamping Hub (Best Balance of Strength + Simplicity)
10
+
11
+Why: The flat face prevents slipping; the clamp applies even pressure all around the shaft without damaging it.
12
+
13
+Torque Handling: Very good — suitable for most high-torque hobby and light industrial setups.
14
+
15
+
16
+### 2. D-Shaft Gear/Pulley with Dual Set Screws
17
+Why: Set screws bite into the flat and round sides of the shaft. Dual screws reduce slippage.
18
+
19
+Torque Handling: Medium-high (depends on the hub material and screw torque).
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+
21
+## Key Type == 键槽联轴器
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+
23
+
24
+
25
+## ref
26
+
27
+- [[flange-dat]] - [[mechanics-dat]]
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\ No newline at end of file
fab-mechanics-dat/mechanical-structure-dat/Shaft-dat/tube-dat/tube-bend-dat/tube-bend-dat.md
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@@ -2,7 +2,7 @@
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# tube-bend-dat
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4 4
5
-
5
+- [[tube-dat]] - [[tube-bend-dat]] - [[tube-elbow-dat]]
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7 7
## hand tool 2
8 8
fab-mechanics-dat/mechanical-structure-dat/Shaft-dat/tube-dat/tube-dat.md
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@@ -14,7 +14,7 @@
14 14
- [[fab-tools-dat]] - [[grinder-dat]]
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16 16
17
-- [[tube-bend-dat]]
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+- [[tube-dat]] - [[tube-bend-dat]] - [[tube-elbow-dat]]
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19 19
- [[shaft-dat]] - [[tube-lean-dat]] - [[tube-copper-dat]] - [[tube-oval-dat]] - [[tube-PVC-dat]] - [[tube-steel-square-dat]]
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