Brief description
This description deals with a mechanism to control
the laser3D on the Atlascar.
System operation
The system is designed to rotate a 2D laser about a shaft
which is perpendicular to the scanner’s internal mirror axle.
The scanner is in forward looking position because it is to be
installed onboard a robot with a prevalent sense of motion.
To rotate the external shaft, a stepper motor is used with its
angular velocity controlled by an MCU. In order to establish
connection between the rotating scanner and the fixed part
of the platform, a slip ring with adequate signal to noise
ratio and power capability has been installed. [R.Pascoal]
Mechanical components
Electrical circuits
Schematics developed in Eagle
Microcontroller schematic
PCB top
PCB bottom
Firmware and similar code
Use MPLABX to open the project in the Code folder.
Microcontroller board is PIC-based and has the following
main program: PIC code