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Build Log: GEPRC GEP-CX3 PRO with Caddx Vista Nebula Pro

Written by: Tony Korologos | Date: Sunday, July 18th, 2021
Categories: Aerial ImageryBuild LogDJIEquipmentFPVMultirotor AircraftReviews
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I just finished building a GepRC GEP-CX3 Pro recently. I haven’t built a 3″ for awhile and was itching to add another fun but small ripper to the fleet. This one I decided to put in a Caddx Vista Nebula as I have no desire to add anything analog to the fleet except for larger long range FPV quads.

The frame is an H style, so there are no props in the view of the camera. The rounded front and back make the body look like a Hebrew National, so I’ve named this on “The Hebrew National Quad.”

There was not much space for both 20×20 stacks to fit. One stack was the Vista Air Unit and the other a Mamba F405 mini stack. Wiring sticking out from either stack meant issues, but I did fit it in.

Parts List

    • Frame: GepRC GEP-CX3
    • Video Transmitter/Camera: Caddx Nebula Pro
    • Flight Controller/ESC Stack: Diatone Mamba Stack Basic F405 Mini MK3.5 40A 6S 8bit – 20x20mm
    • Motors: Diatone MAMBA TOKA 1206 3600KV FPV Racing Motors
    • Receiver: TBS Crossfire Nano RX

The build went fine and the maiden flight was successful. The only issue I’ve had is the motors are hot and the battery life is not as high as I’d like.  I’ve been in Betaflight messing with the gains and may have to also adjust the flight controller dampening.


Law Enforcement’s Drone Education

Written by: Tony Korologos | Date: Tuesday, February 2nd, 2021
Categories: Multirotor AircraftRandom

I tried my 2nd Skydio 2 test flight today at a local bike park. It was quite muddy around so when I saw the park police officer there I thought I’d check in with him so make sure I was about to ride trails that were okay to ride. I had already launched my Skydio 2 and it was hovering about 30 feet front-right of me.

The cop was annoyed by the drone and asked me to move down 50 yards to talk. He didn’t realize the drone was tracking me. So after we moved I explained to him I was in control of the drone. That’s when the entertaining, but sad conversation took place.

Me: “I’m controlling that drone.”
Officer: “You can’t fly that thing under 400 feet.”
Me: “No. Drones can’t be flown OVER 400 feet.” (see pic where I’m motioning with my hand, 400 feet)
Officer: “You can’t fly that thing under 400 feet AGL.”
Me: “No. Above 400 feet. This drone won’t even fly above 400 feet. It’s programmed not to.”
Officer: “You can’t fly that thing over people.”
Me: “I’m not flying over people.”
Officer: “You can’t fly that thing over houses.”
Me: (He’s wrong, but I didn’t tell him) “I’m not flying over houses.”
Officer: “Do you have a license for that?”
Me: “Yes.”
Officer: “What’s your question?”
Me: “I just want to know what trails are okay to ride here, given the muddy conditions.”

So this officer was damn sure you can’t fly a drone under 400 feet. I didn’t ask him, but how would one launch the drone, since you know, the ground is under 400 feet AGL (above ground level). I suppose one could fly a helicopter up to 400 feet then hand launch it from there. It sounds to me like the officer had one briefing on drones and all he could remember was 400 feet.


First Flight – Skydio 2 Drone

Written by: Tony Korologos | Date: Saturday, January 16th, 2021
Categories: Aerial ImageryMultirotor AircraftPhotography
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I’ve been waiting for technology like this for a long time. Finally I have a craft that can follow me on my skiing, biking, hiking and whatever-ing adventures, and capture 4K video. Say hello to the Skydio 2.

Skydio 2 is not quite like other drones from DJI, Autel, Parrot, or Yuneeq. This drone is specifically build as a follow-me drone for action sports. Though a hand controller with sticks is available, most who use it for chase videos use the Skydio 2 app for their mobile device, or even better, the “beacon.”

Skydio 2 and accessories


In the photo above you can see the Skydio 2, the controller, the beacon (left of center), a couple of batteries, the dual battery charger, SD card, some extra propellers, and the semi-hard case the drone comes with. My setup is the sports package.
With the beacon the user can control the drone easily and the drone will follow the beacon while simultaneously avoiding obstacles. Check out my first test video:

Now imagine mountain biking, skiing, boating… This is going to be fun. I do understand the drone can’t perfectly avoid everything. If there are bare tree branches or power lines or any thin obstacles like that the craft may hit them. So I’ll have to fly accordingly.


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