Keyboard Builders' Digest / Projects
RAII RP2040 & RAII Wireless
Two Sweep derivatives with splay: RAII by unspecworks – wired or wireless.
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.
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
Resources
- RAII RP2040 on Github
- RAII Wireless on Github
Published on Thu 5th Mar 2026. Featured in KBD #207 (source).
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