Sputnik Split Keyboard |Handwired Corne| ZMK |Ergo

Affordable DIY ergonomic split keyboard designed for THOCK.This handwired, wireless build uses a Pro Micro nRF52840 (Nice!nano V2 clone), ZMK firmware, and repurposed 13×34 mm ~550 mAh vape cells.A sandwich case with felt between plate and case plus thick 3D‑printed keycaps delivers a deep, thocky sound. STEP files are included.Wireless + wired: ZMK BLE wireless; USB wired works tooController: Pro Micro nRF52840 (Nice!nano V2 clone)Battery: 13×34 mm ~550 mAh repurposed vape cellsSound: Felt-damp