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WeirdFlexButOk keyboard

Penk Chen's unibody ergo WeirdFlexButOk PCB has kerf bending cuts for tenting.

KBD.news
Published June 8, 2024
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The WeirdFlexButOk is a hot-swappable unibody ergo split keyboard by Penk Chen. The PCB is thin enough so it can flex to follow the case’s contour, providing tilting and tenting.

I just finished another build / PCB design. Basically a 0.8mm FR4 PCB with built-in kerf bending cuts, so it flexes and bends for tenting – Penk.

The board was inspired by Joe Scotto's handwired ScottoErgo but opts for Choc spacing and hot-swap sockets, plus a super-bendy 0.8mm PCB with kerf bending cuts.

Pic:

It provides a 15° tilt and 10° tent via a single FR4 PCB.

Specs

  • monoblock split
  • 36 keys (5x3+3)
  • hotswap, Choc, Choc spacing
  • flexible PCB
  • RP2040-Zero

According to Sneftel, who used a similar approach on the thumb cluster for his Gull, 0.8mm FR4 can take a 60mm bend radius without breaking or buckling "if it’s treated carefully and you don’t give it weak points" – a real game changer for e.g. keywell designs.

Pic:

Very long traces, but it works.

Pic:

Resources

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Published on Sat 8th Jun 2024. Featured in KBD #167 (source).


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