keychron_qmk_firmware/keyboards/controllerworks/city42

city42

A pre-built, low profile, unibody split keyboard based on the RP2040 processor

• Keyboard Maintainer: Kevin Gee
• Hardware Supported: city42 split unibody ergonomic keyboard
• Hardware Availability: Controller Works Retail Site Hardware is available as pre-built units only. Make example for this keyboard (after setting up your build environment):

    make controllerworks/city42:default

Flashing example for this keyboard:

    make controllerworks/city42:default:flash

See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.

Features

• Highly integrated design with microcontroller and USB connectors on the main board
• RP2040 processor by Raspberry Pi Foundation running at 130 MHz with 16MB flash memory
• 40mm Cirque trackpad
• 42 per-key RGB LEDs
• ESD and over-current protection on USB
• Reset and boot tactile switches
• USB C host connection
• Hot swap connectors for Kailh Chocolate PG1350 switches
• Chocolate key spacing (18mm horizontal x 17mm vertical)

Bootloader

Enter the bootloader in 3 ways:

• Bootmagic reset: Hold down the upper left key while plugging in USB
• Physical reset button: Press the RST button twice, rapidly
• Keycode in layout: Press the key mapped to QK_BOOT if it is available