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LUNAR II

Second generation compact AEK keyboard by Switchplate Peripherals and ai03

Building upon the legacy of the first generation design, Lunar II brings the acclaimed curved design to a more accessible price, complete with an entirely seamless exterior, increased typing comfort, and solenoid support.

Lunar ii proto side rear cold
Lunar ii proto weight front
Lunar ii proto side rear left
Lunar ii diagonal cropped
Lunar ii variety 05
Lunar ii silver kit 01
Lunar ii built front 01
Lunar ii built side
Lunar ii silver bottom 05
Lunar ii silver bottom 03
Lunar ii silver bottom 06
Lunar ii silver bottom 07
Lunar ii silver diagonal

Project Status

Extras sale

Extra units from group buy sale are available at Switchplate Peripherals

Extras sale

2024-07-20

Extra units from group buy sale are available at Switchplate Peripherals

Shipping

2023-11-24

Units have completed fulfillment; awaiting extras sales

Manufacturing

2023-08-03

Currently waiting on reanodizing for some silver unit ano issues; final packaging and shipment to vendors to follow afterwards

Manufacturing

2022-12-01

PCBs have finished manufacturing; cases have finished machining and are heading into finishing/anodizing/coating phase

Manufacturing

2022-09-03

Units have begun manufacturing

Group buy closed

2022-08-02

Unit cap reached
Preparing for manufacturing

Group buy

2022-07-26

Group buy live at Switchplate Peripherals and TypePlus

Pending group buy

2022-07-06

Group buy launching on the 26th

Announced

2021-07-28

Undergoing revised prototype testing

On hold

2020-10-17

Project delayed due to necessary solenoid improvements and life workload

Announced

2020-09-18

IC published at GeekHack

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A Worthy Successor

Lunar II takes user feedback into mind as it improves upon the first generation design.
The curvature has been refreshed completely to reduce the front ledge height for easier typing, and the 1.2mm aluminum plate balances typing comfort, acoustics, and ease of assembly.
A weight has been added for additional heft and aesthetic accent while retaining the low typing angle.

Zero-Seam Design

Whereas the original Lunar hid the seam on the bottomside, Lunar II removes the seam completely with a single-piece case, with nothing to break the continuous smooth curvature.
A carefully engineered mounting method secures the plate to the case via O-ring-tipped standoffs, allowing for maximized flex on the typing surface without the stiffness of a typical tray mount.

Making Noise

Solenoid support allows for audible feedback at will. Use the electromagnetic hammer to add clickiness to tactile or linear switch without changing feel, or supplement and amplify the sound of clicky switches to a further level. When in need of quiet, simply toggle the solenoid off.

Alps For All

The Lunar II brings the mini-AEK form to a more affordable price point with easier assembly.
Lunar II only requires a single Apple Extended Keyboard’s worth of keycaps and stabilizers to build, making the task of sourcing parts much easier than the original.
Choose between the unified and split backspace plate options to tailor the build to your needs.

Specifications

Specifications Table Header

Case

Aluminum, single part design

Case Colors

Silver, Grey

Weight

Stainless Steel

Plate

Aluminum, through-PCB standoff mount, unified and split backspace variants

PCB

ESD protection, in-switch caps lock LED support for SKCL-LED variants, solenoid switching support (Solenoid included in kit)

Case Mass

~1.2kg (Case, weight, plate)

Layouts

Note: Each layout requires its own plate; select the correct one as necessary.
Layout diagram

Units

100 total

Price (at time of group buy)

419USD at Switchplate Peripherals, 399USD at TypePlus

Vendors

Switchplate Peripherals, TypePlus

Advice and Notes

  • Tweezers may be helpful for hooking the stabilizer wires.
  • Prepare and test all switches before building.
  • Solenoid installation requires slightly advanced soldering and assembly.
  • Tweezers and soldering helping hands may be useful.
  • The prototype case is an early unit with a brass weight; a solenoid cutout has been added in a later revision.

Photo credits go to Switchplate Peripherals.

Files and Resources

Build guide

View online here

PCB Outline

Download

Plate files

Download
ai03 Design Studio

The pursuit of the best input.

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