KeyBoy Advance is PromoType's first project. It brings the GBA to a 50% keyboard with refined elements, built around good typing feel, good typing sound, and a fun visual experience.
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Inspiration
Inspired by the Game Boy Advance, one of Nintendo's best-selling handheld consoles
The small keyboard size captures that compact, portable feeling
The GBA's wide aspect ratio, together with a number row, makes a small board more approachable for enthusiasts
Lands on a 50% layout
Design Concept
The GBA's bold, irregular design makes direct copying unwise. It would break design principles and look odd. So the focus is on capturing its spirit, not its shape, while keeping the basic form of a keyboard.
Top View
The front uses deconstructed elements to evoke a handheld console, with an incised line running to the back to mimic a battery cover
The upper right keeps the iconic power indicator LED
The upper left adds an asymmetric light strip to balance the composition
The lower right keeps the basic shape of the speaker module, with a recessed split design for color separation and layered texture
Back and Side
The bottom deconstructs and reshapes the GBA's complex form into distinctive upward-curving sides
Together with the upward micro-curve of the front bottom edge, this gives the case a floating feel
Structure
Top mounting system with a small O-ring
A pillar with Poron raised from the bottom case to kill the resonance of the stepped spacebar
Shoulder buttons use micro switches to replicate the feel and function, fully customizable via Vial
Layout and PCB
1.6mm black core PCB, supports up to Tri-mode
MX Wired Soldered
MX Wired Hot-swap
MX Dual-mode Hot-swap
MX Tri-mode Hot-swap
Designer: PromoType (Galo)
Layout: 50% (HHKB)
Typing angle: 7°
Front height: 19mm
EKH: 22.9mm
Mounting: Top mount with O-rings
PCB: 1.6mm black core, Tri-mode capable
Shoulder buttons: micro switches, fully programmable via Vial
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