Finally, a long overdue update on project CADcopter. I spent a fair bit of time researching the different components I needed to purchase, but  I finally purchased the all components needed for the build:


  • Flysky 9x transmitter (no tx module)
  • Frsky djt diy tx module
  • Frsky d8r reciever
  • Sunnysky 2212-13 motors
  • Dys 30A ESC flashed with SimonK firmware
  • 10×4.5 props (need 2x CW and 2x CCW)
  • 5A UBEC
  • Multiwii pro flight controller with GPS
  • Turnigy 5000mah 3s battery
  • Lipo alarm


I could talk for hours about all the different possible combinations we could have chosen. In the end, it all comes down to the lift needed to maintain a hover. While searching, I stumbled on this handy calculator that helped me choose the motor and propeller combination.

Ecalc allows you to enter information such as the weight, motor rating and propeller size to find out how much throttle will be needed to maintain a hover.  Below are the results for the CADcopter:


As you can see, 54% throttle will be required to maintain a hover. This translates to roughly minutes of flight time, which is decent for something that weight 3.3 lbs.

According to my tracking numbers we should be receiving the parts any day now, and then it’s off to the interns so they can model all of the components to use in the final assembly. We have the frame design almost finished, but we need the rest of the components so we can check for clearance.

While we’re waiting for the components to ship, let’s take a look at one of the many designs currently available for purchase. The DJI Phantom is an all-in-one small Quad Copter designed for multi-rotor enthusiasts. With a range of around 3000 ft and a 10-15 minutes flight time you can definitely have some fun out of the box with this guy.


This design is certainly simple and sleek, but it’s no fun to “buy” something when we can build it, right? Stay tuned for more updates on the CADcopter’s frame design in the near future.

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