For little money: Turn a Raspberry Pi into a 3D laser scanner on the cheap
The Raspberry Pi ecosystem is rich and diverse, with many community projects managing to put the SBC to use in a variety of ways. One that caught our eye is the Raspberry Pi Laser Scanner, published by Michael Xiao on Instructables. The project utilises a Raspberry Pi as part of, as its name suggests, a 3D laser scanner. The scanner can record 3D models, which it saves as .obj mesh files.
The project requires the following, besides a Raspberry Pi:
- Raspberry Pi Camera V2
- LEDs, resistors and wires
- 3D printing filament
- 12 x 12 x 0.125 wood sheets
- M3 hardware
- Stepper Motor
- Line Laser
- LN298 Stepper Motor Drivers
- Metal pushbutton
The Raspberry Pi Laser Scanner project page contains links to all the parts listed above. The project should cost just over US$100 including the cost of purchasing a Raspberry Pi, but you must have access to a soldering iron, laser cutter and 3D printer, along with screwdrivers and some pliers.
According to Xiao, the project can scan objects with "decent precision". The scanner is supposedly consistent too, with it able to reproduce visibly similar scans multiple times even if the placement of the object has been changed. Scanning an object in the highest resolution takes around five minutes, for reference.
Please see the Raspberry Pi Laser Scanner project page for more information.