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Head to head · Prices checked Oct 21, 2026

Cidoo Nebula vs KEEBD Contra65% Wireless Kit vs 40% DIY Kit

Choose the Cidoo Nebula for a ready-to-use, versatile wireless experience, or the KEEBD Contra for an ultra-compact, budget-friendly soldering project.

CIDOO Nebula VIA Keyboard Kit

65% Wireless Kit

Cidoo Nebula

3.4 · 48 reviews

from$55at Mechkeys

Shop nowSee all prices

Quick verdict

Which one should you get?

Get the

Cidoo Nebula

65% Wireless Kit

If you want

  • Versatile three-mode connectivity (Bluetooth, 2.4 GHz, wired).
  • Hot-swappable PCB with full VIA programming support.
  • Includes a gasket mount structure with Poron and IXPE foam padding.

And can live with

  • Requires purchasing separate switches and keycaps to complete.
  • The ABS case material may feel less premium than metal alternatives.
  • Larger 65% form factor is less portable than smaller layouts.

Get the

KEEBD Contra

40% DIY Kit

If you want

  • Extremely affordable entry point for a DIY keyboard kit.
  • Ultra-compact 40% ortholinear layout maximizes desk space.
  • Includes an FR4 plate and acrylic bottom plate in the kit.

And can live with

  • Requires soldering diodes, a controller, and switches (not included).
  • The 40% layout has a steep learning curve and lacks a number row.
  • No built-in wireless connectivity or battery.

Bottom line

For most users, the Cidoo Nebula is the recommended choice. It delivers modern features like wireless connectivity, hot-swap sockets, and a gasket mount in a usable 65% layout for a reasonable price. Only choose the KEEBD Contra if you specifically desire the challenge of building a soldered, ultra-compact 40% ortholinear keyboard and are comfortable with its significant layout limitations.

What actually differs

The differences that matter

Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.

Cidoo Nebula

KEEBD Contra

  • Layout size

    65%

    40%

  • Hot-swappable

    Yes

    No

  • Case material

    ABS

    Acrylic, Plastic

  • Knob

    Yes

    No

  • VIA

    Yes

    No

KeebFinder scores

How we score
  • Cidoo Nebula
  • KEEBD Contra
Performance
48
55
Build quality
63
41
Productivity
74
48
Customizability
85
53
Portability
88
60
See every spec side by side

Best for

What will you mostly use it for?

The Cidoo Nebula is the more versatile choice, winning in gaming, office, programming, modding, and content creation due to its practical layout, wireless features, and customization options. The KEEBD Contra's sole victory is for travel, where its extreme compactness and lower cost are primary advantages. For most users seeking a daily driver, the Nebula's feature set is more applicable.

For gaming

Pick the Cidoo Nebula

  • The Cidoo Nebula's 65% layout retains dedicated arrow keys, which are commonly used in games.
  • It offers versatile three-mode connectivity including a 2.4 GHz wireless option for a stable connection.
  • The vendor description mentions a gasket-mounted structure with foam padding for a softer typing feel.

From real owners

What owners say

Ratings and quotes collected from verified store reviews, including the critical ones.

Cidoo Nebula

3.4

48 owner reviews

Praise
“Overly happy! the material is really good and the keyboard is way beyond expectations. One of the best company and support ive seen!”
Lumia M.Verified buyer· via Epomaker
Critique
“The keyboard itself is lovely but one of the key isn't working at all and the key next to it also doesn't work when pressed normally, you have to hit it hard...”
Seo L.Verified buyer· via Epomaker

KEEBD Contra

No owner reviews collected yet.

Full specs

Cidoo Nebula vs KEEBD Contra specs

Every tracked spec, side by side. Rows marked with a dot differ between the boards.

10 of 20 specs differ

Cidoo Nebula

KEEBD Contra

Typing & switches

Switch options

—
Tactile

Hot-swappable

Yes
No

Mount style

Gasket Mount
—

Screw-in stabilizers

No
Yes

Layout

Layout size

65%
40%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
—

Battery

3,000 mAh
—

USB-C

Yes
No

Build & materials

Case material

ABS
Acrylic, Plastic

Plate material

—
FR4

Weight

457 g
—

Dimensions

35 x 120 x 325 mm
—

Backlight

RGB
None

Firmware & software

VIA

Yes
No

Mac & Windows

Yes
No

Extras

Released

2023
2021

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

Lowest price across stores, Amazon excluded.

Cidoo Nebula2 stores
  • MechkeysCN

    In stock
    $55Visit
  • AmazonGlobal

    Check price
    ~$55Visit
KEEBD Contra2 stores
  • KEEBDAU

    In stock
    $25Visit
  • AmazonGlobal

    Check price
    ~$25Visit

Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.

FAQ

Cidoo Nebula vs KEEBD Contra: your questions

No, the Cidoo Nebula is sold as a kit. According to the vendor, it includes the case, PCB, plate, and stabilizers, but you must provide your own mechanical switches and keycaps to complete it. It does not require soldering due to its hot-swappable sockets.

The KEEBD Contra kit requires several additional components. You must source a Pro Micro compatible controller, MX-style switches, keycaps, and a 2u clip-in stabilizer for the spacebar. You will also need soldering equipment to assemble the through-hole diodes and components.

Only the Cidoo Nebula offers wireless connectivity. The vendor description confirms it supports three modes: Bluetooth, 2.4 GHz via a dongle, and wired USB-C. The KEEBD Contra is a wired-only keyboard that requires a USB connection from its microcontroller.

Yes, but the methods differ. The Cidoo Nebula supports VIA programming, allowing for real-time key remapping without flashing firmware. For the KEEBD Contra, you must flash precompiled firmware found online onto the microcontroller, which is a more technical process.

The Cidoo Nebula is more beginner-friendly. Its hot-swappable design means you can install switches without soldering, and it includes more components like stabilizers. The KEEBD Contra requires soldering and sourcing more parts, making it better suited for those with prior electronics experience.

The KEEBD Contra does not have dedicated arrow keys. As a 40% ortholinear keyboard, arrow functions must be accessed through a function layer, meaning you hold a modifier key to use other keys as arrows.

The Cidoo Nebula includes a 3000mAh battery. While the vendor mentions "extended battery life," the exact runtime will depend on usage patterns, RGB brightness, and the wireless mode used.

The Cidoo Nebula uses a gasket mount, which is described as a soft-elastic structure with foam padding. The KEEBD Contra uses a tray mount system, where the plate is screwed directly into the acrylic bottom case.

Stabilizer inclusion varies. The Cidoo Nebula vendor description does not explicitly list stabilizers, but they are typically included in such kits. The KEEBD Contra listing states a 2u stabilizer is "required to complete" and is not included in the base kit.

Only the Cidoo Nebula features RGB backlighting. The vendor description mentions dynamic RGB that can be customized. The KEEBD Contra has no underglow or per-key RGB lighting.

The Cidoo Nebula case is made from ABS plastic. The KEEBD Contra uses a combination of materials, with an FR4 switch plate and an acrylic bottom plate.

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