Category: 3D Printing & CNC
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DIY Moxon antenna for TBS Crossfire and FrSky R9M
Moxon antenna in layman terms, it’s probably a simplest linearly polarized directional antenna. It’s like a bent halfwave dipole with a bent reflector in a back. Think about it as a very simplified Yagi antenna. It does not have much gain but has very good backward rejection. And thank’s to a simplicity, Moxon is super…
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3D printed racing drone, part 3
It is done. It is alive. My 3D printed FPV racing drone works. A few weeks ago I finally flight tested my design and it works! Even better than expected, since I survived the experience without a scratch. OK, I did not crash it yet, but give me some time for that too…. And I…
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3D printed racing drone, part 2
My 3D printed racing drone is done. More or less. I was able to finish it a few weeks ago and even perform a maiden flight. It survived the experience, but I also discovered few problems I will have to solve before officially calling this project a success. First of all, the decision about hard…
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3D printed racing drone, part 1
I've been pretty busy last 2 weeks. Among other things, I've started to design 3D printed racing drone frame. I'm fully aware there are plenty designs available on Thingiverse, but almost all of them forgets that plastic filament is not carbon fiber laminate and what works well with carbon, will fail with filament. So, I…
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Project Dualcopter – worklog #3
It's been exactly one year since my last update on Project Dualcopter. On 20th of October 2016 I've posted that there was a progress. Now, 12 months later, I once gain report, that there was a progress…. That was slow…. I've finally installed control surfaces and servos I've finally decided where LiPo will go: to…
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Very custom FPV quadcopter for my daughter
When few months ago my older daughter (10 years old) started to express interest in FPV quadcopters, I was both happy and concerned. Happy, since I would have someone to fly with. Concerned, since she has no idea how to fly, I do not have a quadcopter for her and there is a big chance…
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GPS Racer: worklog #9 – double rangefinder setup
My GPS Racer is less and less fun project. For last few weeks it acts as sensor platform for my attempts to bring rangefinders and terrain following modes back to INAV. This time in a way that will work. Two weeks ago it was carrying HC-SR04 sonar (crappy device). Week ago it was carrying US-100…
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Depron Airboat Worklog #3
In the beginning, sorry for small delay. I’ve finished this project 4 weeks ago, but somehow it always missed schedule. Anyhow, depron airboat with 3D printed propulsion elements is ready!
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Depron Airboat Worklog #2
Next week passed and Depron Airboat is almost ready. Almost, since it still needs some finishing and I’m missing a BEC. Turned out that total power usage of one 9g servo and FrSky X4R receiver is slightly too high to just use single LM7805. 350mA during servo movement means more that 2W of heat ((12-5)…