Change

• Changed logo to SideraKB.

More info and other file remains the asme as Rev 2.1

Rev 3.x aims to make it wireless.

Demo video

Changed

• Changed MCU from RP2040 to nRF52840 (E73-2G4M08S1C).
• Changed LDO voltage regulator to boost converter (TPS61220DCK).
• Removed 3.5mm TRRS and USB Type-C for two halves communication.

Compatibility

• ErgoSNM Vial-QMK Firmware Ver 3.0.0
• ErgoSNM nRF Firmware Ver 0.3.0, Ver 0.2.0

Left	Right	Thumb cluster

Added

• Added front (top layer) LED pads.
• Added screw mounting hole for plate.

Changed

• Replace JST GH 1.25 with FPC 0.5mm 8P connector.

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QMK Firmware Document Blog post: ErgoSNM——有軌跡球的分離式人體工學QMK鍵盤 (v2.1)

Left	Right	Thumb cluster

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Fixed

• PJ-393 8P TRRS jack footprint fixed.

First release.

⚠️ Known Issue

• The PJ-393 8P TRRS pin order provided by the seller is wrong, solder it on the PCB will short VCC and GND.