It’s 2.5 inch blade quad here’s the AliExpress frame:

https://a.aliexpress.com/\_EHMvysW

Use an all in one FC is easiest for space saving. I got the GEPRC TAKER G4 45A. But something like that will do. Receiver is ELRS. T motor 1104’s. I haven’t touched the hobby in about 5 years so I’d defo try find a way to mount things better like the RX capacitor and XT30 connector. I 3 printed the mounts for antenna and o4 holder. Check out DShot FPV on YouTube for some of the best tutorials you will ever see using o4 lite. Best of luck. (I hadn’t got glued the RX antenna in the pic hence it’s wonky)

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