this post was submitted on 29 Apr 2025
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Hello guys!

I was wondering if anyone could help me building a 3S FPV quad from scratch. Originally I was looking forward to buy the Crux3 limited edition 2S DIY set, but I got my money refunded because it‘s not available anymore. Instead of getting any other 2S Quad that’s capable of carrying a RunCam Thumb, I was thinking about building a 3S from scratch, which I will take as an opportunity to learn more, and hopefully I will not fall down this rabbit hole and not fly anymore.

So yeah, main thing I want this to do is using the RunCam.

Anyway, I want her to be analog, ELRS, 3S; a big plus would be removable prop-guards.

Sadly, I have no idea what FC (or is it AIO FC?) to use, but I was thinking about the SpeedyBee F7 V3 FPV Flight Controller, since the description says 3S-6S - and it’s currently on sale.

Is it a good choice? Thanks in advance!

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[–] [email protected] 2 points 3 days ago

If I were you I would go on https://oscarliang.com/builds/ And look how and with what parts they built a 3s drone Speedybee f7 is in general a good FC but you have to check if it fits in your frame.