Quadrotor Frame Suggestions and Tips

Since there isn't one up already, I decided make a thread here with some tips and suggestions that I come across when building a custom quadrotor from scratch.

 

Anyone else who has a few tips or suggestions to building custom quadrotors, feel free to post!

 

I'll start with:

 

Don't use all-thread, also known as threaded rod, to keep your hub structure together. It's evil!

If you do end up using this in your design, be prepared to spend hours of taking it apart and puting it back together. 90% of that time will be in moving the nuts around on the all-threads.

 

 

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • Using 1/4 inch round rods for the arms presents the problem of making a motor mount that will stay in place. So far, I've come up with a custom-milled motor mount design that screws into the bottom of the motors and simply clamps onto the rods.

     

    Advantages of this setup:

    • Can move the motors to various distances to test the dynamics.
    • Very lightweight
    • Very low drag profile
    • Arms may be disassembled for ground transportation
    • Can be extended past the motors and threaded to allow balancing weights to be screwed onto it.

     

    Disadvantages:

    • Difficult to align the motors to be perpendicular to the ground plane.
    • 1/4 inch aluminum is somewhat flexible, and acts like a stiff spring if the motors are run at higher throttles.
    • Current motor mount design only has two screws to hold down the motors.
    • Current motor mount is not "universal," and won't be able to attach to some motor styles.

    I've refrained from drilling any holes into the rods, because I'm afraid it would take too much strength out of them and would still only have 2 points of contact...

  • 3D Robotics

    Id recommend hex standoff, they work pretty well with a little less time spent screwing and un screwing

This reply was deleted.

Activity

DIY Robocars via Twitter
Videos from the ICRA autonomous racing workshop are now available: https://linklab-uva.github.io/icra-autonomous-racing/
Thursday
DIY Robocars via Twitter
RT @SmallpixelCar: Prepared race track for Warm Spring Raceways @wsraceways and looking forward to test my new car at RAMS RC @ramsaicar fa…
Jun 6
DIY Robocars via Twitter
RT @f1tenth: Trying out some nasty blocking maneuvers 🏎️🤖 #f1tenth #autonomousracing https://t.co/nMTstsaogM
Jun 5
DIY Robocars via Twitter
May 27
DIY Robocars via Twitter
RT @araffin2: I will talk this Saturday from 18:00 to 19:00 Paris time for the @diyrobocars community about learning to race in hours using…
May 27
DIY Robocars via Twitter
RT @a1k0n: Luckily the infeasible hairpin problem was easily reproducible in simulation and I could test the fix before bringing the car ba…
May 26
DIY Robocars via Twitter
RT @a1k0n: Another problem was that I was over-constraining the car's allowed accelerations, so it didn't think it could turn as tight as i…
May 26
DIY Robocars via Twitter
RT @a1k0n: Breaking the map up into two halves worked, but I had to be more careful about separating the inner track from outer. There's se…
May 26
DIY Robocars via Twitter
RT @a1k0n: Here's a datalog for my fastest lap of the day. Lap timer is tiny window lower-left. https://t.co/myrlWWrKUY
May 26
DIY Robocars via Twitter
May 26
DIY Robocars via Twitter
RT @a1k0n: Here was my car's POV. Man this track is confusing in first-person! After the incident my camera was all scuffed up and I was af…
May 23
DIY Robocars via Twitter
RT @circuitlaunch: Loved seeing so many familiar (masked) faces at Circuit Launch today for our first in person @diyrobocars in over a year…
May 22
DIY Robocars via Twitter
RT @circuitlaunch: Last but not least, mystery guest @BostonDynamics Spot took to the track @diyrobocars He enjoyed the #brazilianbbq too 😂…
May 22
DIY Robocars via Twitter
RT @SmallpixelCar: Today’s race @circuitlaunch for @diyrobocars with @a1k0n Was busy in the morning and did not get a chance to tune camera…
May 22
DIY Robocars via Twitter
RT @a1k0n: This was epic. My car was barely working this morning, had to make a lot of changes and extremely dirty hacks. Post-race analysi…
May 22
DIY Robocars via Twitter
DIY Robocars @ Circuit Launch, 3/7/2020 https://twitch.tv/diyrobocars
May 22
More…