Laser Tracker
Idea: create a construction level (1/16" accuracy at 30 feet) laser tracking machine.
Requires:
- Laser tracking
- Accurate azimuth and rotation
Low end variant:
- Use stepper motors and a limit switch for drives.
- Use a webcam to track the laser target (corner cube)
- Small RF trigger handle.
Mid variant:
- Add encoders (magnetic?) to axes for feedback.
- Use a 2D PMD to center the laser light correctly.
Components (may not be used for all variants):
- Hacked laser tape measure
- slip rings
- anti-backlash gears
- Austria Microsystems magnetic encoder hardware
- 2 way Peltier block
- Steppers and drivers
- Webcam or similar for spot tracking.
- PMD and support electronics
- Use a mini Linux board (Olimex brand?) to do any complex calculations onboard and provide an Ethernet interface to a primary contorl computer.
Laser types
Time of flight
Inferometry
Phase difference