WalleFPV

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FPV Designer & Pilot Former GEPRC product engineer OddityRC product consultant Now creating his own brand WalleFPV https://wallefpv.com/

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14 oktober 2026 om 00:23

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WalleFPV

You can subscribe to our store at: https://wallefpv.com/

Expected to launch in November–December.

13 oktober 2026 om 02:44

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WalleFPV

The camera can also be moved forward or backward; it is currently positioned in the center.

For better protection, you can shift the camera backward, though the propellers or the drone body might become visible in the O4 Pro's ultra-wide-angle mode.

Alternatively, you can choose to install a UV or ND filter.

13 oktober 2026 om 02:43

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WalleFPV

The propulsion system is too powerful and mismatched with the default PID settings, causing self-oscillation.

This can be resolved by adjusting either the propulsion system or the PID parameters.

This is a common occurrence during testing; we need to determine the limits of each prototype.

12 oktober 2026 om 03:46

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saving my new sub-100g FPV drone with bare hands!

Hey guys, Walle here from WalleFPV.

Just took our new sub-100g Eagle3 engineering prototype out for its first outdoor hover and motor linearity check today, and well... it turned into a near-fatal flyaway survival challenge! 😂

As you can see in the video, the moment I armed and gave it a slight punch, the high-frequency oscillation went absolutely crazy. Before I could even react, the quad completely lost control and initiated a full-throttled FLYAWAY, screaming and shooting straight up into the air!

To save the fresh Naked DJI O4 Pro camera sensor from smashing onto the concrete or disappearing over the roof, I had to jump and pull off a sketchy bare-hand interception right out of the sky. Luckily, the new custom CNC machined camera guard works great as a hand-hold, the frame is perfectly fine, and I've still got 10 intact fingers to finish the tuning tonight!

The Tech Challenge:

Designing a sub-100g 1.8" True X frame with a Naked O3/O4 setup means balancing weight vs. structural rigidity. The extreme gyro noise on this initial test saturated the PID loop instantly, leading to this sudden runaway.

My plan for tonight back at the bench:

1. Revamp the Betaflight filter settings (sliding up the D-term dynamic filters and tweaking the dual PT1 lowpass).

2. Lower the D-term gains significantly to prevent runaway saturation.

3. Check if the FC soft-mounting is transmitting frame resonance.

Have any tuning gurus here solved mid-to-high frequency resonance causing flyaways on micro 45mm setups without adding heavy carbon beef? Would love to hear your thoughts or filter layout suggestions in the comments!

Proper 4K raw cinematic footage from the O4 will be posted here as soon as I wipe out the gyro noise. Cheers!

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https://www.youtube.com/shorts/i7LAd31Bshw?t=5&feature=share

12 oktober 2026 om 03:28

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WalleFPV

It is very fast. The camera has some room to slide back and forth; currently, it is positioned in the center, as placing it too far back would result in the drone's body and propellers appearing in the shot.

12 oktober 2026 om 03:27

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WalleFPV

yes，https://wallefpv.com/products/wallefpv-naked-o4-pro-ultralight-o4-pro

12 oktober 2026 om 03:26

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WalleFPV

Thank you

10 oktober 2026 om 06:30

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WalleFPV Eagle3 Prototype - Sub 100g Naked O4 Pro FPV Drone Upgrade

Hello DIYFPV community, I’m Walle from WalleFPV, bringing an update on our Eagle3 prototype, successor to Eagle2.

The core design goal: keep Naked O4 Pro on board while keeping takeoff weight <100g, and fix the weak point of Eagle2 — the protruding camera lens.

Changelog Eagle2 → Eagle3

• New machined camera guard structure, fully wraps the Naked O4 Pro lens, reduces crash damage risk

• Switched to true X frame layout, optimized CG and motor power distribution for more predictable handling

• Compatible with 45mm / 1.8" propellers

• Buzzer fitted as standard

Dual battery choices: 3S380mAh lightweight pack, or 3S550mAh longer runtime pack

Legal note: The sub-100g takeoff weight could mean registration exemption in UK and Japan. This is not legal advice; every operator must check local drone regulations.

Flight testing is underway. Will post O4 raw footage soon. Happy to answer your technical questions below.

Walle | WalleFPV

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