CAD-dat/3D-dat/3D-dat.md
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+
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+# 3D-dat
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+
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+- [[pixieplacer-dat]]
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+
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+- [[tank-dat]] - [[rover-dat]] -
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CAD-dat/CAD-dat.md
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+
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+# CAD-dat
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+
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+
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+## Cloud-based Tools:
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+
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+
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+- Onshape: You can upload the .PRT file and see if Onshape can automatically recognize it and allow you to work with it or convert it to another format.
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+- GrabCAD Workbench: This platform may also support .PRT files, especially if it’s a standard PTC Creo file.
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+
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+### drawbacks
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+
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+- consider internet speed
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+
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+### Onshape
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+
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+- [check system requirements](https://cad.onshape.com/check)
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+
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+## opensource 3D
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+
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+### freeCAD
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+
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+- [freeCAD](https://wiki.freecad.org/download)
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+- easy to crash
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+- AMD HD 6700 1G = slow
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+
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+
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+## opensource 2D
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+
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+- libreCAD
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+
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+
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+
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+
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+
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+
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+
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+
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+- [[CNC-dat]]
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+
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+
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+## ref
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+
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+- [[CAD]]
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Tech-dat/motion-control-system-dat/motion-control-system-dat.md
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# motion-control-system-dat
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+
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+
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+## motor RC type
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+
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+- [[SDR1064-dat]]
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+
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+- [[robot-dat]]
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+
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+
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+## machine type
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+
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- [[CNC-dat]]
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Tech-dat/power-dat/battery-dat/battery-rechargerable-dat/lithium-battery-dat/lithium-battery-dat.md
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- battery voltage B+/B- = OK, output == 0V, BMS problem
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+
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+
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+## 📋 Common Cylindrical Lithium-Ion Battery Types
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+
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+| Type | Size (mm) | Capacity Range (approx.) | Common Uses |
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+|----------|---------------------|-------------------------------|-------------------------------------|
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+| 14500 | 14 x 50 | 600–1000 mAh | Flashlights, small electronics |
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+| 16340 | 16 x 34 | 700–1400 mAh | Flashlights, laser pointers |
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+| 18350 | 18 x 35 | 800–1400 mAh | Compact flashlights, vaping mods |
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+| 18650 | 18 x 65 | 1800–3500+ mAh | Laptops, power banks, e-bikes |
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+| 21700 | 21 x 70 | 3000–5000+ mAh | Electric cars, high-performance tools|
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+| 26650 | 26 x 65 | 4000–6000+ mAh | Flashlights, power tools, e-bikes |
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+| 32650 | 32 x 65 | 6000–7000+ mAh | Energy storage, high-capacity uses |
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+
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+
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+🧠 Which to Choose?
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+18650: Most versatile and widely used.
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+
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+21700: Replacing 18650 in high-drain applications (e.g., Tesla).
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+
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+26650: Best for high-capacity flashlights and tools where size is less of a concern.
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+
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+Smaller types (e.g., 14500): Used in compact or AA-sized electronics.
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+
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+
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+
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+
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+## 🔌 Notes on Battery Chemistry
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+
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+Most of these are Lithium-Ion (Li-ion) or Lithium Iron Phosphate (LiFePO₄):
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+
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+Li-ion: Higher energy density, common in consumer electronics.
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+
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+LiFePO₄: Lower energy density, but longer cycle life and more stable — often used in solar and industrial applications.
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+
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+## 🔒 Protected vs Unprotected
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+
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+Protected cells: Include a small circuit to prevent overcharge, overdischarge, and short-circuit.
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+
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+Unprotected cells: Require careful handling but are often used in custom battery packs or devices with built-in protection.
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+
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+
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+
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+
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+
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## large battery
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48V
Tech-dat/robot-dat/robot-dat.md
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- [[rc-car-dat]] - [[robot-arm-dat]]
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+- [[balancer-dat]]
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+
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+
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## Code and SDK
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Tech-dat/tech-dat.md
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- [[robot-dat]]
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-- [[power-dat]] - [[battery-dat]] - [[battery-charger-dat]] - [[dcdc-down-dat]] - [[dcdc-boost-dat]] - [[ldo-dat]]
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+- [[power-dat]] - [[battery-dat]] - [[battery-charger-dat]] - [[dcdc-down-dat]] - [[dcdc-boost-dat]] - [[ldo-dat]] - [[battery-rechargerable-dat]]
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- [[network-dat]]
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- [[sensor-dat]] - [[current-sensor-dat]] - [[current-transformer-dat]]
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-- [[acturator-dat]] - [[motor-dat]] - [[motor-driver-dat]]
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+- [[acturator-dat]] - [[motor-dat]] - [[motor-driver-dat]]- [[motion-control-system-dat]]
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- [[CAD-dat]] - [[CNC-dat]] - [[openpnp-dat]] - [[3d-printer-dat]] - [[pnp-machine-dat]] - [[glue-dat]]
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-
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+- [[3D-dat]]
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## Circuits
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app-dat/RC-dat/Tank-dat/Tank-dat.md
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![](2025-05-22-00-50-12.png)
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+
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+## 3D
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+
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+- tank track and [[robot-arm-dat]] - [3D model](https://cad.onshape.com/documents/74b490fd20a2a4c684736444/w/df7ed99939a49695aecaa97f/e/90154fe41bafe724913e360f?renderMode=0&uiState=68301af9be87bf505c7ca7d0)
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+
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+
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+
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## ref
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- [[RC]] - [[tank]]
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app-dat/RC-dat/Tank-dat/tank-track-dat/tank-track-dat.md
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Chains
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-![](2025-05-22-14-10-22.png)
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+![](2025-05-22-14-10-22.png)
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+## guide
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+
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+- [tank #track disassemble and re-assemble](https://t.me/electrodragon3/371)
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+
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+
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+## ref
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+
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+- [[robot-dat]] - [[tank-dat]]
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app-dat/RC-dat/rover-dat/2025-05-23-15-11-02.png
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Binary files /dev/null and b/app-dat/RC-dat/rover-dat/2025-05-23-15-11-02.png differ
app-dat/RC-dat/rover-dat/rover-dat.md
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- [[markus-rover-dat]]
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+
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+## 3D files
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+
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+![](2025-05-23-15-11-02.png)
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+
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+[differential drive robot](https://cad.onshape.com/documents/78baf3d450629341539223b8/w/67b1d15167c8efd1d8242192/e/0e64a58d61cf14a49375d9c6?renderMode=0&uiState=68301fdbbe87bf505c7cb858)
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+
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+[TT Motor 4WD Car Mecanum wheel](https://cad.onshape.com/documents/ffe6ad9ac868a2e0b125a547/w/06961ea3665cb10f47c1f6fe/e/c6b6790270216188fea6ddec?renderMode=0&uiState=6830205c37d051363fada807)
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+
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+[Another TT Motor 4WD Car Mecanum wheel](https://cad.onshape.com/documents/3fc9a68709b7b211c126b7b0/w/fd59e3cfbe0cf012d3264ef8/e/f35859a1e063a8642be26811?renderMode=0&uiState=68302088624d574aaab00cc0)
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+
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+
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## board
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- [[SDR1064-dat]]
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+Parts - [[TT-motor-dat]] - [[mecanum-wheel-dat]]
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## ref
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app-dat/app-dat.md
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- [[internet-radio-dat]] - [[ESP32-APP-dat]]
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-- [[metal-detector-dat]]
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+- [[metal-detector-dat]] - [[portable-lights-dat]]
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## Domestic Appliances
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app-dat/portable-lights-dat/portable-lights-dat.md
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+# portable-lights-dat
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+| Brand | Best For | Notable Features |
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+|---------------|-------------------------------------------|------------------------------------------------------|
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+| Fenix | High-performance flashlights | Military-grade durability, long battery life |
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+| Olight | EDC (Everyday Carry), tactical, camping | Magnetic charging, sleek design, great UI |
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+| Nitecore | Tactical, EDC, photography | USB-C charging, high lumen-to-size ratio |
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+| Acebeam | Ultra-bright, high-end lights | 20000+ lumen monsters, great thermal control |
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+| ThruNite | Budget-friendly quality | Excellent value, reliable performance |
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+| Streamlight | Law enforcement, industrial | Rugged, trustworthy, many regulated output models |
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+| Black Diamond | Headlamps, outdoor, hiking | Lightweight, adjustable beam patterns |
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+| Petzl | Professional headlamps, climbing | Great ergonomics and battery management |
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+| BioLite | Eco-friendly camping lights | Rechargeable + solar options, multifunctional gear |
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+| Anker | Power banks with lights, budget options | Reliable, affordable, widely available |
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+
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+
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+
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+
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+## 🔦 Best Overall for Most Users
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+
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+Fenix PD36R Pro – Excellent balance of brightness, runtime, and rugged build.
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+
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+Olight Baton 3 Pro – Small, super bright, with a wireless charging case.
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+
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+Nitecore MH12 Pro – USB-C, 3300 lumens, and excellent beam quality.
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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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+- [[app-dat]]
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mechanics-dat/CAD-dat/CAD-dat.md
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-
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-# CAD-dat
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-
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-
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-## Cloud-based Tools:
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-
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-
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-- Onshape: You can upload the .PRT file and see if Onshape can automatically recognize it and allow you to work with it or convert it to another format.
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-- GrabCAD Workbench: This platform may also support .PRT files, especially if it’s a standard PTC Creo file.
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-
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-### drawbacks
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-
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-- consider internet speed
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-
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-### Onshape
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-
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-- [check system requirements](https://cad.onshape.com/check)
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-
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-## opensource 3D
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-
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-### freeCAD
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-
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-- [freeCAD](https://wiki.freecad.org/download)
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-- easy to crash
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-- AMD HD 6700 1G = slow
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-
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-
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-## opensource 2D
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-
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-- libreCAD
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-
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-
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-
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-
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-
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-
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-
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-
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-- [[CNC-dat]]
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-
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-
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-## ref
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-
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-- [[CAD]]
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weekly-dat/2025-May-dat/2025-May-dat.md
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- added many information for [[antenna-active-dat]] - [[antenna-passive-dat]]
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+- [[3D-dat]] toys added into the page
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+
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## Dissusion, Feedback, To-do
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