3D Scanner

thingiverse

***Please note that this project is intended solely for educational purposes. The project may not be optimal in some ways, and could potentially pose risks to users. Please exercise caution.*** ---------- This 3D scanner can be built and assembled using only 3D-printed parts, with the exception of the electronics (full list of components below). Two stepper-motors and a range-sensor drive the scanner, controlled by a Raspberry PI. All parts have been designed to fit inside a build-volume of 140x140x140mm. # Concept A model is placed in the center of the largest gear (Plate_Gear.stl). One of the stepper-motors then rotates the object around its Z-axis, allowing the range-sensor to measure relative distances between points on the model. The second stepper-motor controls the range-sensor's vertical position, enabling a scan of the entire height of the model (limited by the tower's height). # Assembly See 3DScanner_assembled.stl for a visual representation of the assembled scanner. A simple model of the stepper-motors and distance-sensor has been added to aid in assembly. 1. Place the two stepper-motors in their slots on the base (Base.stl) 2. Connect the body (Body.stl) to the Base, ensuring the stepper-motors fit snugly in their slots 3. Place the small gear (Drive_Gear.stl) in its slot, aligning with the shaft of the stepper-motor 4. Place the large gear (Plate_Gear.stl) by tilting it sideways, aligning the teeth with the small gear 5. Thread the vertical axle (Drive_Shaft.stl) through the rig (Rig.stl) 6. Fit the range-sensor onto the rig (Ref 3DScanner_assembled.stl) 7. Place the tower onto the body 8. Fit the axle onto the shaft of the other stepper-motor 9. Secure the axle by placing the top on the top of the tower (Tower_Top.stl) Wiring-diagram and software-download instructions will be added when they are ready. # Required components (All parts can be purchased at thepihut.com) * 1x Raspberry PI 3B+ * 1x Adafruit VL53L0X Time of Flight Distance Sensor * 1x Adafruit DC & Stepper Motor HAT * 2x Micro Metal Geared Stepper Motor * Wires, soldering-iron, and possibly a breadboard If you have any suggestions for improvement or other constructive criticism, please leave a comment. --------------------------------------- # Changelog ## 2018-07-29 * Added custom support for threads on Rig.stl to ease printing * Fixed error with Threads on Rig.stl * Reduced clearance for Distance-sensor-taps by half * Extruded bottom of body.stl for easier printing and more stability * Added Changelog ## 2018-07-25 * Initial Upload