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Meteor 75 with 660mAh battery. Flies really well.

The gates are made with 2812 LED strips. They're driven by an Arduino. The Arduino is powered by a regular old USB wall wart. We're indoors, we have extension cords and outlet strips and a bunch of the USB cables are 20' long. In operation, they draw around 300mA. So if we were to want to power them off a LiPo, a 2S 3000mAh pack (with a 5V regulator) would run them for much more than 10 hours. The gates are made from a 5' length of pre-cut 1/2" PEX tubing purchased at my local Home Depot. The LED strips slip right through. Wrapped in to a hoop, that gives you a circle with a diameter of about 19" if I remember right. I think I picked this because someone who used to fly with us said a standard Whoop gate is 20". There's a 3D printed joiner that holds the two ends of the tube together and that joiner bolts to a clip that snap-fits over 3/4" PVC. The joiner puts another 1.5" in to the diameter and gets it really close to 20". The red start button isn't hard to make. I bought them off Amazon, I think they had a recorder function to record a sound and then they'd play it whenever the button was pushed. I pulled that stuff out and replaced it with a small microcontroller (don't remember, maybe a DF Robot "Beetle". It emulates a keyboard and generates a <SPACE> when pressed, but not all of the little micros on the market can do mouse/keyboard emulation. Has to be the right type, but it wasn't anything special or expensive) with a USB cable routed out of the housing. Added some code that watches for the button to be pressed (which is wired to one of the GPIO inputs on the MCU) and when it sees it, it outputs a <SPACE> character over the USB connection. I have a much more advanced start button design that uses battery power, bluetooth and mesh networking (basically, every racer gets a button, the race is "initiated" by whoever is running it, and once every racer has hit theirs, the race starts automatically). I've been meaning to post the details to a sub project on the race timer Git. But I need to clean up the code a bit first, it's embarrassing, so I haven't gotten around to it.

Thanks, yeah, a clever comment is often followed quickly by a crash. :]

It's an 808 #16 Car Key Chain Micro Camera. If you search for that on eBay you can get them for about $45. There are cheaper keycams out there, but a lot of them are less reliable and shoot poorer-quality video. My keycam has the 'B' lens (no fish-eye effect), which I prefer.

David and I were flying FPV; the robot plane was flying a simple pattern. Yeah, much fun!

Yeah, next time I need to try to shake it off!

The app is available through the etheli link in the description. It's installed by clicking on the .apk file.

etrc1 I see. . Very cool! Thanks

Thanks. Not sure what you mean be "proper" intermod calculator. My IMD Tabler tool (linked to in the video description) calculates IMD effects for 5.8GHz frequencies.

Excellent! I missed the link in your description. Thank you!

Wonderful tool! Thanks again!

Nice chunk out of the wing. :]

At the beginning of the video I show a receiver at 5685 and a transmitter at 5925 (5925-5685=240), running with no interference. If you have a test I can reproduce showing this kind of interference, please describe it.

What I've since found is that transmitters will produce interference at frequencies 240MHz above them (but not below). See my "ArduVidRx and Controller Android App Demo" video for a demonstration of this.

+Daniel White QMFC field: See qmfc.org

haha I grew up right down the street from there. That's actually where I got my first bicycle! (when it was in operation). Thanks for the Info. and cool video. Ive got a 250 FPV racing quadcopter and plan on building a wing soon. Maybe Ill Have to join the QMFC....

+Ed Dugo Thanks. The rods are .050", they are included in the kit from racores.com. I found that I didn't need guides for the control rods, but they're in the kit if needed. It all goes together really nicely; quick and easy build. --ET

+etrc1 Thank you! I like the idea of 2 1 cell lipos

Thank you for the tip!