Board-dat/Board-DAT.md
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@@ -411,7 +411,7 @@ Darlinton driver - [[SCU1024-dat]]
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- [[SDR1040-DAT]] - [[SDR1041-DAT]] - [[SDR1096-DAT]] - [[SDR1106-dat]] - [[SDR1113-DAT]] - [[sdr1070-dat]]
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-- [[sdr1062-dat]] - [[SDR1060-dat]]
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+- [[sdr1062-dat]] - [[SDR1060-dat]] - [[SDR1064-dat]]
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- [[L298-dat]]: - [[SDR1093-dat]] - [[SDR1034-dat]] - [[SDR1048-dat]] - [[SDR1053-dat]]
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Tech-dat/acturator-dat/motor-dat/DC-Gear-Motor-dat/MG513-dat/MG513-dat.md
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@@ -51,4 +51,6 @@ Note: Ke and Kt are the parameters of the motor itself (without reduction gearbo
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## ref
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-- [[reduction-gear-motord-dat]]
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\ No newline at end of file
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+- [[dc-gear-motor-dat]]
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+
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+- [[MG513]] - [[motor]]
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\ No newline at end of file
Tech-dat/light-density-dat/light-density-dat.md
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@@ -0,0 +1,78 @@
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+
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+# light-density-dat
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+
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+## How to Easily Test Light Lumen Output
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+
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+> While you can’t measure lumen precisely without professional equipment, here are some simple methods to roughly estimate or compare light output.
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+
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+---
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+
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+### Method 1: Compare Against a Known Lumen Light Source
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+
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+#### Steps:
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+1. Find a light bulb with a known lumen rating (e.g., an 800-lumen LED bulb).
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+2. Place the light you want to test and the known bulb at the **same distance** and **same background**.
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+3. Turn both on and observe the brightness on a white wall or paper.
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+4. Visually compare which one is brighter to estimate relative lumen output.
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+
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+### Features:
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+- ✅ Very simple and intuitive
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+- ❌ Not quantitative, only relative comparison
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+
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+---
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+
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+### Method 2: Use a Phone’s Light Sensor to Measure Lux
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+
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+#### Steps:
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+1. Download a light meter app that measures illuminance in lux, such as:
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+ - `Lux Light Meter`
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+ - `Physics Toolbox Sensor Suite`
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+2. Point your phone’s sensor toward the light source at a fixed distance (e.g., 1 meter).
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+3. Read the lux value from the app.
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+4. Estimate lumen using the formula:
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+
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+ Lumen ≈ Lux × Area (in square meters)
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+
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+Example: If you measure 500 lux over 1 square meter:
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+
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+ Lumen ≈ 500 × 1 = 500 lumens
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+
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+
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+#### Features:
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+- ✅ Quantitative measurement
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+- ✅ Easy to operate with a smartphone
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+- ❌ Accuracy depends on phone sensor quality and measurement setup
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+
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+---
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+
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+### Method 3: DIY Integrating Sphere (Simplified Version)
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+
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+#### Concept:
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+Use a hollow sphere with a white or reflective interior to evenly distribute light from the source inside. Measure the light inside the sphere with a light sensor or phone, then calculate total lumen output.
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+
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+#### Materials:
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+- Foam or plastic sphere
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+- Small hole for the light source
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+- Light sensor module or a phone with a sensor
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+- White paint or reflective material inside the sphere
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+
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+> ⚠️ This method requires some DIY skills and basic electronics knowledge. I can help with detailed instructions if interested.
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+
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+---
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+
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+### Summary Table
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+
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+| Method | Accuracy | Tools Needed | Difficulty |
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+|------------------|------------|------------------------------|-----------------|
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+| Comparison Method| Low | Known lumen bulb | ★☆☆☆☆ |
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+| Phone Lux Meter | Medium | Smartphone + Lux app | ★★☆☆☆ |
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+| DIY Integrating Sphere | Medium-High | DIY materials + light sensor | ★★★★☆ |
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+
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+---
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+
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+### Recommendations
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+
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+- For simple brightness comparison, use **Method 1** or **Method 2**.
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+- For a closer approximation to real lumen measurement and you enjoy DIY projects, try **Method 3**.
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+
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+If you tell me what type of light source you want to test (e.g., flashlight, lamp, projector), I can help you choose the best approach.
app-dat/RC-dat/RC-dat.md
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@@ -12,6 +12,10 @@
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- [[UAV-dat]]
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+
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+
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+
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+
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## RC - signal
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- [[RC-signal-dat]]
app-dat/RC-dat/RC-link-dat/2025-05-23-16-14-35.png
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Binary files /dev/null and b/app-dat/RC-dat/RC-link-dat/2025-05-23-16-14-35.png differ
app-dat/RC-dat/RC-link-dat/RC-link-dat.md
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@@ -3,6 +3,14 @@
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- [[Wfly-dat]] - [[WFT06x-dat]] - [[WFR06S-dat]]
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+## RC Tx
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+
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+- [[PX4-dat]]
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+
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+![](2025-05-23-16-14-35.png)
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+
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+
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+
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## RC Receiver
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8 16
When you push the **RC console (joystick or stick) up and down**, you're typically controlling the throttle or elevator channel, depending on the mode of your transmitter. The PWM (Pulse Width Modulation) signal output sent to the receiver or flight controller varies accordingly:
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@@ -35,4 +43,6 @@ If it's controlling elevator (pitch):
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## ref
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+- https://docs.px4.io/v1.11/en/getting_started/rc_transmitter_receiver.html
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+
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- [[RC-dat]]
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\ No newline at end of file
app-dat/RC-dat/Tank-dat/Tank-dat.md
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@@ -2,7 +2,7 @@
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# Tank-dat
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-- [[dc-gear-motor-dat]]
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+- [[dc-gear-motor-dat]] - [[MG513-dat]]
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- [[tank-track-dat]]
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app-dat/portable-lights-dat/portable-lights-dat.md
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@@ -30,4 +30,6 @@ Nitecore MH12 Pro – USB-C, 3300 lumens, and excellent beam quality.
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## ref
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+- [[light-density-dat]]
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+
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- [[app-dat]]
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\ No newline at end of file