• A different direction

    Samrath07/22/2015 at 09:09 1 comment

    The alignment issues are too much of a headache with the radial stepping design, and the precision is quite poor with that configuration. Inspired by a YouTube video, I've switched directions to pursue a worm drive transmission.


  • Simple Gimbal Idea

    Samrath06/26/2015 at 02:42 0 comments

    A bearing ball mounted on a shaft, and a piece of hdpe with a drill hole to centre things. There will be an opposing force holding the hdpe (and mirror) down caused by two more bearing surfaces, one on each of the axis rotors.

  • Prototyping a single axis

    Samrath06/26/2015 at 02:13 0 comments

    To prove the concept of integrating the motors into the structure, I need to test that I can actually move a single axis. This video shows that there is enough force generated to move things. As the structure gets heavier I may have to increase the number of turns of wire (and the voltage).

    I tried to operate this motor with three coils to allow continuous travel, but I could not align them in such a way as to allow the rotor to hang free without binding. I think that if I can just get the axle of the rotor to be more rigid without drastically increasing the friction, the alignment will be less of an issue.

  • 3D Printing would help...

    Samrath05/15/2015 at 02:00 0 comments

    Access to 3D printed parts would greatly accelerate this project. I would use the printing time to produce the mirror mounting brackets, radial rotors and the fulcrum tower. I would be able to iterate on my initial design right away!