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RAII RP2040 & RAII Wireless

Two Sweep derivatives with splay: RAII by unspecworks – wired or wireless.

KBD.news
Published March 5, 2026
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The RAII by unspecworks is a customized variant of waffle87's Sweep featuring splayed columns and various PCB and footprint updates. Beside the wired variant with on-board RP2040 MCU, there's also a wireless version with nice!nano or compatible devboards – based on the Sweep Bling LP.

The main focus of this mod was incorporating splay for the ring and pinky fingers while keeping a consistent form factor across both wired and wireless versions. I've also designed matching cases for both – unspecworks.

The name is a reference to the resource acquisition is initialization programming idiom.

Pic:

Features

  • 34 keys (5x3+2)
  • low-profile Choc v1, v2 switch compatibility
  • Choc spacing
  • hotswap-only switch footprints
  • Controller: integrated RP2040 (RAII) or Nice!Nano v2 compatible (Pro Micro-sized nRF52840)
  • splay

Pic:

Resources

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Published on Thu 5th Mar 2026. Featured in KBD #207 (source).


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