Firefly 2S Nano Baby 20 O4 lite 38g

By Sebfbr on Jan 19, 2025

7 0 9

It's essentially just a Firefly 2S Nano Baby 20 analog, converted to DJI O4 Lite. A fantastic 2-inch quad that only gained 1 gram with the O4 Lite upgrade.

What an amazing time for this fantastic hobby! I absolutely love flying in the yard. It's incredible that digital FPV is now possible on such a small scale.

Thanks to its lightweight design (77g AUW with a 660mAh GNB LiHV), it offers impressively long flight times and minimal damage to the drone or surroundings during impacts. ;)

Photos

Part List

Frame	Firefly 2S Nano Baby 20 Analog Frame kit Flywoo.net	$19.99
Flight Controller	GOKU F405 1-2S 12A AIO W / build-in ELRS 2.4g RX For Flylens 75 \ 85 (4 builds) Flywoo.net	$89.99
Motors	4 x Flywoo ROBO 1002 15500KV / 23500KV Fpv Motor (3 builds) Flywoo.net	$51.96
Propellers	Gemfan Durable 2015 2-Blade Propeller (Set of 8) - 1.5mm Shaft Flywoo.net	$3.99
FPV Camera	DJI O4 Air Unit Store.dji.com	See Site
Batteries	GNB 660mAh 2S 90C HV Rotorama.de	See Site

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Discussion

Thumpah 25 days ago

Looks good! How complex was the tuning, do you have a preset?

Sebfbr 24 days ago

I used the Nano Baby 20 preset from Flywoo with a few minor PID adjustments.

Sebdewey 25 days ago

WHoow. Is it good for freestyle?

earflapjetpack 28 days ago

what's it like flying with a narrower angle of view? i have an 04 lite on the bench, but i haven't decided where to put it.

Sebfbr 28 days ago

Not the best experience so far. Disabling EIS makes no difference in fov for me. so I would guess there's a bug which crops the frame nonetheless? 4:3 is "okay", 16:9 is horrible.

carlèt Jan 21, 2025

Very nice! what's the throttle hover %?
I have 19000kv 1002 motors with 1s and I'd like to put them with 2s. Do you think is possible using them 2s with a throttle cup?
thanks!

RippinRich 30 days ago

Nice

Sebfbr 30 days ago

Thanks! Hover is pretty low. Around 20-25 percent. I don't see a problem with 19000kv motors, as long as your FC can handle it. Try a 60-70% throttle cut and keep an eye on the amps. This quad is already pretty fast on biblades.

Jodie Froster Jan 19, 2025

What a time, indeed!!!!
38 grams, digital, brushless, ELRS. WIld. Actually looks decently durable. I have been flying my 4" 4s on 03 around the house/yard, and the video is amazing but it's too fast sometimes, this looks perfect. You may have just planned my next build for me!

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