Pando Keyboard

Pando is a wired 58-key column-staggered split keyboard. It uses an integrated MCU design on the STM32 platform (STM32G0B1) with an IO expander (PCA9555) on the secondary half, connected over USB-C.

[!NOTE] 📘 The Documentation pages contain a Build and Firmware guide.

[!TIP] 🚀 Want one? Pre-assembled and PCB-tested kits are available on Etsy. Your support helps me keep this project open-source and encourages the development of new models!

Features

• STM32G0B1KBT6 MCU (64 MHz Cortex-M0+, 144 KB SRAM)
• PCA9555 IO expander on the secondary half
• USB-C split communication with ESD protection on all ports
• Hotswap switch sockets
• Single-sided SMD components for hotplate soldering
• Vial firmware for keymap configuration
• Same key layout as the Pando58, but as an assembled PCB instead of a DIY kit

Repository

Directory	Description
kicad/	Schematics and PCB (left, right, switch plates)
firmware/	QMK/Vial keyboard definition
ergogen/	Layout configuration and case/plate generation
case/	3D printed case models (FreeCAD)
docs/	This project's documentation site (built with Zensical)

Firmware

Pando runs Vial firmware. Precompiled builds are on GitHub Releases — flash with dfu-util, or build from source with the keyboard definition in firmware/keyboards/. See Installing Firmware for details.

License

Pando Keyboard © 2026 by Julian Yap is Open Hardware, licensed under CERN-OHL-S v2. See LICENSE.

The firmware in firmware/ is licensed under the GPL v2.