Globe Tracker 3D Workbench

Modular 6-Sector System • Universal 130mm Base

🏠 Hub 🏛️ Ziggurat Dial 🗺️ 1:1 Gores 🏷️ 1:1 Stickers 🎛️ Mother Base 🧪 Testing & Install 📋 Master BOM ⚡ Wiring Guide

⚡ REAL-TIME SYSTEM TELEMETRY OPTIMAL MATCH

Ball Diameter 100.0 mm

Active Sector Sector B (100mm)

Focal Standoff 2.40 mm (Optimal 🎯)

Bowl Clearance +3.80 mm (Free)

⚙️ Sphere Dimension & Inverse Match

🌐 Sphere / Ball Diameter 100.0 mm

65mm (Tennis)100mm (Standard)320mm (Giant)

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RECOMMENDED CARTRIDGE INLAY

Sector B: 100mm Desktop Globe

OPTIMAL FIT 🎯

Coverage Range: 85 mm – 110 mm

Pre-Angled Bed: 36.0° Bank Angle

Normal Lift (Height): +12.0 mm (Flush 2.40mm Focus)

Wiring Clearance: 100% Open Right Side

Test Cross-Compatibility:

📊 6-Sector Ball Diameter Coverage Chart Ball @ 100.0mm

65mm85mm110mm145mm190mm245mm320mm

Sphere Vertical Float (Cutaway Inspection) 0 mm (Resting)

0mm (Resting on Bearings)+40mm+80mm (Floating)

👁️ Visibility Layers

📦 Direct 3D Print STL Export

📊 Full 6-Sector Compatibility Matrix

Print the Universal Base Ring once, then 3D-print the small 10-minute wedge cartridge matching your ball diameter:

Sector	Target Range	Midpoint	Angle	Lift	Action
Sector A	65 – 85 mm	75 mm	44.0°	+14.0 mm	⬇️ STL
Sector B 🎯	85 – 110 mm	100 mm	36.0°	+12.0 mm	⬇️ STL
Sector C	110 – 145 mm	125 mm	32.0°	+10.0 mm	⬇️ STL
Sector D	145 – 190 mm	165 mm	28.0°	+8.0 mm	⬇️ STL
Sector E	190 – 245 mm	215 mm	24.0°	+6.0 mm	⬇️ STL
Sector F	245 – 320+ mm	280 mm	20.0°	+4.0 mm	⬇️ STL

💡 Adjacent cartridges have overlapping optical focal tolerances of ±0.4mm, allowing cross-compatibility between sector boundaries.

📋 System Bill of Materials (BOM)

🖨️ 3D Printed Custom Parts (Fabrication)

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Universal Modular Base Ring

cradle_base_ring_universal.stl

1x Universal Print

Outer / Center Dia: 130 mm / 60 mm

Bearing Pockets: 3x @ 36.0° Inward Tilt (KU-B15-OFK)

Modular Receptive Bays: 2x 22.0 mm Standardized Slide-In Channels

Print Bed Stance: 100% Flat Z=0 (Zero Supports Needed)

⬇️ Download Universal Base Ring (.STL)

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Modular Swappable Cartridges

Sectors A through F • 10 Min Prints

2x Prints

Slide Fit: 21.6 mm Runner (Mates into 22.0mm Channel)

Wire Egress: 100% OPEN Right Side (Zero Pinched Pins)

Focal Alignment: 2.40 mm Calibrated Bumper Stop

🔌 Hardware & Electronics (COTS)

⚙️

Bosch Rexroth Kugelrolle

KU-B15-OFK (R053011510)

3x Units

Main Ball Diameter (dw): 15.875 mm (5/8" Steel)

Flange Diameter (D1): 31.0 mm (Lip: 2.8 mm)

Stem Body Diameter (D): 24.0 mm (Bore: 24.2 mm)

Load Capacity: 500 N (50 kg)

👁️

PixArt PMW3360 + Lens

KYCS-PMW3360 Optical Sensor

2x Units

PCB Dimensions: 30.0 x 20.0 x 1.6 mm

Focal Sweet Spot: 2.40 mm ± 0.2 mm

Resolution / Speed: 12,000 CPI / 250 IPS

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Raspberry Pi 4 Model B

SPI Hardware Master Host

1x Unit

Operating Voltage: 3.3V Logic (Pin 1)

SPI Bus Clock: SPI0 @ 2.0 MHz (>1000 Hz)

⚠️ Never connect sensor to Pin 2 (5V) — use Pin 1 (3.3V) only.

🪐 Planet Texture & Spin Physics

🖱️ Left Click + Drag: Orbit Camera / Spin Planet

🖱️ Right Click + Drag: Pan View

📜 Scroll: Zoom In / Out