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JeNo 3 - Front view

JeNo 3" and 3.5"

3-3.5" drone FPV frame compatible with Air Unit O3 and designed for Freestyle, Freeride and Cinematic. Many customizable options are available.

[!NOTE] Designed in France by members of the WE are FPV community, the JeNo is already flown by hundreds of pilots and is now being sold by Drone FPV Racer (affiliate link). The French version of the project is available on Printables. Note that a 5.1-6" version and a 7" version of the JeNo exist.

JeNo classic - 3D render

Table of contents

Key features

Presentation

The success of the JeNo 5.1" has led us to develop a little brother, in 3 and 3.5" form factor. This frame will therefore be just as comfortable for Freestyle as for cinematic shooting.

On 5" and larger builds, we might be tempted to keep an Action Cam, whereas on a compact and light machine, the DJI O3 reveals its full potential.

The design of a frame of this size turned out to be more delicate than expected :

After several iterations, we have come to a first version of the JeNo that ticks all these boxes ! This is the 3" Classic version, unibody with a 4mm bottom plate.

We were initially not enthusiastic about the unibody design, but this approach has proven to be an excellent compromise. With a thickness of 4mm for the bottom plate, we get exceptional strength and flight behavior worthy of a 5". The assembly remains easy, and the absence of separate arms allows for sliding a 20x20 stack while taking advantage of the 20mm height of the body.

WE are FPV banner

Other versions are available :

The JeNo 3 follows in the footsteps of its big brother : the front cage tilted at 25° provides a clear FOV. Notches are provided to slide in any type of ND filter, and the propellers are not visible in the FPV feed or in HD recording.

Two types of camera plates are available : full carbon or soft-mounted. Note that to benefit from Gyroflow (or RockSteady) stabilization, it is imperative to opt for the soft-mounted camera plates.

Finally, as this frame was designed by members of the WE are FPV community, a "WaF edition" is available (the logo is engraved on the bottom plate). Join us on the WAF forum in the official JeNo 3-3.5" thread to discuss it further.

WE are FPV banner

The JeNo is also available in 5.1-6" version and 7" version.

Detailed specifications

GeometryWide-X
Props size3 to 3.5" (depending on the versions)
Weight40 to 55 g depending on the versions, including screws
Arms4mm for unibody, 3mm for separate arms
Body height20 mm
Stack height20 mm (unibody)
Bottom plate4mm for unibody, 2mm for separate arms
Middle plate2 mm (separate arms)
Top plate2 mm
Camera plates2.5 mm
Motors mounting9 to 12 mm
Camera20 mm (DJI), Micro, Nano. Clear FOV. Ajustable.
Main stack25.5 mm x 25.5 mm (M2) AiO and 20 mm x 20 mm (M2) stack
Supported VTXAnalogic, DJI Vista, DJI Air Unit O3, WalkSnail, HDZero…
Strap passageYes

Customization

The JeNo is customizable, offering several options to best adapt to different needs and individual preferences :

Two versions of 25° camera plates are available: freestyle (full carbon) or cinematic (soft-mounted).

[!IMPORTANT] Please note that to benefit from Gyroflow (or RockSteady) stabilization, soft mounting is mandatory.

A high tilt version (40°) is available in community remixes (by Bard Fpv).

[!IMPORTANT] By default, we have left the stack holes at a 2mm diameter (M2). If your stack uses M3 screws, you will need to enlarge these holes. Please note, carbon dust is hazardous, to avoid inhaling it, run a trickle of water while drilling/filing.

For your information, we have tested this frame with the following setup:

Below, you will find a complete build example as well as several flight videos with this setup.

Buy it or cut it !

It is up to you : you can get it cut or you can get a classic or cine version directly from Drone FPV Racer :

The JeNo 3" and all its variations are also available from CNC Madness (Canada).

Of course, you can directly contact your favourite carbon fiber cutting service.

The "dxf" folder contains all the files you need to get it cut in your favourite flavour :

[!NOTE] Each file contains all parts. All camera plates versions are included in the files.

"extras" folder will contain specific and optional parts.

Bill of materials

In addition to the carbon fiber, you will need the following hardware to complete the assembly of the frame.

Standoffs

It is recommended to use 5mm diameter standoffs, especially for those that will serve as support for TPU (backpack and capacitor). Moletted standoffs can still be used, but the TPU supports will need to be modified accordingly.

[!WARNING] Attention: For the Light version, you will need to provide M2 standoffs and corresponding screws (M2 instead of M3)

QuantityDescriptionDetails
6M3x20mm standoffsfor the body
2M3x20mm standoffsfor the camera

Stack materials

[!WARNING] Attention: M2 screws are mentioned here because they are most commonly found in this format. However, some 20x20 stacks use M3 screws. In this case, you will need to enlarge the stack holes.

QuantityDescriptionDetails
4M2x16mmfor the stack
4M2 nuts for stack screws
QuantityDescriptionDetails
4M2x20mm countersunk screwsfor the stack
4M2 nuts for stack screws

Frame materials

QuantityDescriptionDetails
6M3x6/8mm countersunk screwsfor the top plate
10M3x8mm screws (titanium if possible)for the bottom and camera plates

Additional materials

QuantityDescriptionDetails
16M2x7mm screws (if using arms protections) or M2x6mm (if no TPU)for the motors
4M2x3mm screws if soft mounted or M2x4mm if NOT softmountedfor the camera

Additional materials for separate arms versions

QuantityDescriptionDetails
5Pressnuts (Flywoo or SourceOne alike)4 for the arms, 1 for the middle plate
5M3x10mm screwsfor the pressnuts

Fasten the lipos

The JeNo allows the use of non-slip straps thanks to its strap slots. You can also use a LiPo pad if desired.

Building/Assembly guide

Find numerous examples of builds on the DroneBuilds page of WE are FPV. DroneBuilds

Some clarifications before assembling the frame:

JeNo 3 Capacitor and RX

JeNo 3 RX Antenna

The assembly is simple (you can also find the detailed assembly instructions in PDF format among the project files) :

JeNo 3 Assembly step 01

JeNo 3 Assembly step 02

JeNo 3 Assembly step 03

JeNo 3 Assembly step 04

JeNo 3 Assembly step 05

Inspiration

It is primarily inspired by its big brother, the JeNo 5.1", especially for the camera plates system.

Tuning, Betaflight Preset ?

For the JeNo 5.1", we provided a preset.

For the 3", we will not share a preset in the short term because there are too many factors that can alter the quad's behavior:

If, with a little more perspective, we see that a preset is feasible, we will share it. In the meantime, we have shared some settings that should work with most setups in this post.

However, one piece of advice, if you find your quad too challenging to handle in confined spaces, do not hesitate to adjust the throttle curve by adding a bit of expo around the "hover point" :

JeNo 3 Throttle curve

Blackbox

Here is an overview of vibration distribution on the 3 axes for the JeNo 3" 4mm Unibody. This is indeed the unfiltered gyro signal freestyle flight :

JeNo 3 Blackbox

Videos

Flight preview of the JeNo 3" Unibody Classic 4mm version (Cinematic, camera plates soft-mounted), stabilized with Gyroflow :

JeNo 3" Cinematic

Flight preview of the JeNo 3" Unibody Classic 4mm version (Freestyle) :

JeNo 3" Freestyle

Flight preview of the JeNo 3" Unibody Classic 4mm version (Bando):

JeNo 3" Bando

JeNo 3" review on WE are FPV (French) :

JeNo 3" Review

Builds examples

You can find many build examples on WE are FPV's DroneBuilds :

Authors

The JeNo was designed by :

TPU

Among the downloadable files, you will find a variety of TPU to protect your JeNo 3" :

Community (remixes and TPU)

Fork/remix

TPU

In addition to the TPU options available on this repo, you will find here some TPU designs created by the community.

Changelog

[!TIP] Compatibility is consistently maintained between each version: if your frame was a v1, the parts from v1.2 will be compatible. The same applies to TPU accessories. That's why we don't keep the history of previous versions.