| VTOL used to be the 'holy grail' of the radio control world just 10 years ago. The lack of cheap and fast enough micrcontrollers to perform the much-need stabilization in hover meant that we had to get creative with little single-axis rate gyros, slow Arduinos, and a mess of wires buried in the fuselage just to pull off the stabilization and transition mixing needed for a VTOL. With the increasing availability of small, high powered microcontrollers and IMU's, flight controllers have become more affordable than ever and as a result, VTOLs have become *relatively* easier to create. I'm sharing the plans and code for this amazing F-35 VTOL parkjet so you can quickly and easily dip your toes in the no-runway-needed world of VTOL, and hopefully be inspired to try out your own design. |  |
Free Plans and Code!
If I could give you my car keys too, I would. But until then, free plans and flight control code (more on that below) will have to do. You can download the plans and other files you need to build this F-35 in this FliteTest forum post.
Flight controller code specific to this vehicle (covered and written in the video) is available here:
https://github.com/nickrehm/dRehmFlight-F-35
The Flight Controller
This project uses the dRehmFlight VTOL flight controller, which is some simple, bare-bones Arduino flight stabilization code running on a cheap Teensy 4.0 microcontroller. This flight controller makes it extremely easy to create custom control mixes for different flight modes that a VTOL requires, even if you have never coded before. Check out this FliteTest article explaining more about dRehmFlight VTOL.
You can check out the 'clean' version of the code for starting your own projects here: https://github.com/nickrehm/dRehmFlight
Tutorials for building the hardware (minimal soldering between the microcontroller + IMU required) are available here: https://www.youtube.com/playlist?list=PLTSCOv-lGtMax-oA4Pnq8OTxd4fTucrjQ
Parts I use and Recommend
5 inch racing drone parts are in abundance nowadays, so I designed this aircraft to be compatible with your favorite miniquad components. Throw in 5 standard 9 gram servos, and you're ready to get flying. These are some parts I use and recommend:
Motors: https://amzn.to/3qXXIU7
Propellers: https://amzn.to/3dMu52E
Battery: https://amzn.to/2TEVEEp
Servos: https://amzn.to/3hEwgGH
Teensy 4.0: https://amzn.to/3i5Zwqn
Closing Thoughts
 | Bring back the parkjets! Better yet, make them VTOL too! Miniquad drone parts are perfect for your next parkjet build, and the price of microcontrollers is so low, there's no reason not to throw one on your next build to bring its capabilities to the next level. |
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