Showing off my rocker-bogie suspension articulation during Q&A of my @sparklecon23b presentation. Yes, I got stuck against my joint angle limiter. But I also got unstuck all by myself! Lesson learned, limiter will be adjusted.
I will be part of this space-themed episode of "Hangout & Nerdout". There will be several 10-minute presentations, one of which is a recap of my past, present, and future. Afterwards, an open Q&A session for any of the presenters.
@StoneburnerSFW @Regorlas@OpenBuilds Larger extrusions may make sense if you're building a larger rover. Also, if you are outside the United States, generic 20mm extrusions may be more easily available and/or less expensive than Misumi HFS3 / MakerBeam XL /etc.
@StoneburnerSFW @Regorlas@OpenBuilds When I was originally designed, Misumi 15mm extrusions were the lowest-cost option. At the time, other extrusions (8020, OpenBuilds, etc.) were mainly 20mm. They are certainly sturdier, but also cost more and the extra strength was unnecessary.
@Serdar_Abali@RosmoRobot Hoverboard motors are designed for high speed, Mars rover suspension is designed for slow rock crawling. How well do these motors perform at, say, 5 RPM?
As long as steering knuckle stress is kept along vertical steering axis, steering forces required are small. Std RC servo OK.
Micro Sawppy Rover Beta 3 is up and running! Like all #Sawppy rovers, it copied rocker-bogie suspension kinematics of @MarsCuriosity and @NASAPersevere.
Affordable commodity TT gear motors couldn't maintain low speeds, so this little rover scoots far faster than scale speed.
@tnmkumar The original goal was Mars 2020 launch day, then it became landing day. After those two milestones came and went, no new target has yet been set.
¯\_(ツ)_/¯
@tnmkumar Not yet, the design is still under development. Right now still too fragile with frequent breakdowns. Want people to spend more of their time driving and less time fixing their rover!
Drew Morgan, in Mission Control, asks the astronauts to please look out the space station windows to see if there is any debris floating about, or damage to the space station.