city42 Prototypes
city42 Prototypes
Regular price
$392.28 AUD
Regular price
$590.78 AUD
Sale price
$392.28 AUD
Unit price
/
per
This listing is for the city42 prototype units. These units are tested and ready to ship. There is a separate listing for the production units of the city42.
The city42 is a 42 key low profile ergonomic unibody split keyboard inspired by the Corne (CRKBD) and designed for Kailh Choc switches. Key features include:
- Fully pre-built with no assembly required.
- CNC milled, anodized aluminum case including top and bottom plate. Switches mount directly in the integrated top plate for extra rigidity.
- RP2040 processor with 16 MB flash memory
- 40mm Cirque trackpad controller
- Per-key LEDs
- "Chocolate" spacing: switches are spaced 18mm (width) x 17mm (height) apart
- USB-C port with over-current and ESD protection
- Hot-swap sockets for Kailh "choc" PG1350 low profile switches. Switches come pre-installed and tested if ordered with a keyboard.
- Pre-loaded with QMK Firmware and Via GUI support
- Premium construction: RoHS components, lead-free solder paste on all PCBs.
Required for Operation:
- 42 Kailh "Chocolate" switches
- 40 Kailh "Chocolate" 1u keycaps
- 2 Kailh "Chocolate" 1.5u keycaps
- 1 USB-C cable
Product Comparison
Feature | city42 Low Profile | Corne Chocolate |
Soldering | Pre-built | DIY |
Connection |
USB-C |
Depends on micro-controller board, TRRS |
Processor | RP2040 | ATMega32U4 |
Program Memory | 16 MB | 1 KB |
Clock | 133 MHz | 16 MHz |
Firmware | QMK |
QMK |
Keymap | Via, Vial |
Via, Vial |
Spacing | Chocolate | MX |
Lighting | Per-key | Per-key and back-light optional |
Display | N/A | OLED module |
Pointing | 40mm Cirque trackpad | N/A |
Backplate | CNC machined aluminum |
PCB |
Switches | Kailh Chocolate only | |
Keycaps | Chocolate spacing only | MX spacing |
Circuit Protection | ESD and over-current on USB-C | N/A |
Materials
Materials
Aluminum case and FR4 main board.
Shipping & Returns
Shipping & Returns
International shipping can be complex. Please ask on chat for custom shipping quotes for international orders. Key cap sets can be shipped in a small bag or in the original packaging for an additional charge.