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Show HN: A Truly Modular Keyboard

What HN thinks

Everyone loves the magnets; nobody wants to pay for 104 of them or reassemble them after a drop.

Cool idea, needs a full demo
Many found the magnetic snap-together keys delightful but want to see more than two keys before judging rigidity, latency and usability.
Impractical as a full keyboard
Skeptics point to roughly $6–20 per key, weak structural integrity, pogo-pin reliability and no staggered layouts or big keys, making a 104-key board unrealistic.
Better as a macro pad
Several suggest it suits configurable keypads for sim rigs or workstations, ideally with baseplates, spacers, blank modules and staggered support.

Consensus: Commenters agree the engineering is neat and well executed, but it is an early proof of concept whose cost and rigidity at scale are unproven.

Recommended in the comments

CAN bus (other): Suggested over I2C to avoid the 127-address limit and bus hangs with many keys.
NXP LPC11C00 ↗ (product): Cited as an MCU with built-in CAN, addressing transceiver size concerns.

Summarised by Claude from the comment thread 7 hours ago.

Points: 241
Comments: 85
Best rank: #3
Posted: 2026-10-25 by NotARoomba
Category: Hardware

mechanical-keyboard modular-keyboard kicad risc-v stm32 bluetooth pcb-design

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