9981 BLE & USB Keyboard Pro

A tiny titan of typing, the 9981 BLE & USB Keyboard Pro packs a full keyboard and trackpad into a compact, open-source package designed for hacker-friendly projects and multitool rigs. Built around the powerful Nordic NRF52840 microcontroller and running community-driven ZMK firmware, this keyboard bridges retro charm with modern utility.

ZitaoTech GitHub

Key Highlights

🔥 Dual Wireless & Wired Support — Connect seamlessly over Bluetooth Low Energy (BLE) or plug in via USB-C for low-latency wired use.
🧠 ZMK Firmware Powerhouse — Fully programmable with layers, custom keymaps, and advanced behaviors so you can tailor layouts to your workflow.
🔡 Mini But Mighty — A petite footprint with true n-Key rollover (NKRO) means every simultaneous key press gets registered — perfect for hotkey combos and one-handed use.
🖱️ Trackpad + Scroll Wheel — Built-in trackpad doubles as a scroll wheel when Caps Lock is engaged — blending typing and pointing in one pocket-friendly device.
🔋 Long-Life Battery — Integrated Li-ion power keeps you typing for months under typical use.
🤝 Multi-Device Pairing — Pair with up to four devices, then switch between them with the flick of a key.
🛠️ Open Source DNA — Full hardware and firmware source available under MIT license — hack, modify, rebuild.
⚙️ Premium Materials — An aluminum top shell with 3D-printed lower chassis combines durability with lightweight portability.

Whether you’re building a cyberdeck, enhancing a handheld Linux rig, or just want a nerd-approved external keyboard for rapid mobile workflows, the 9981 BLE & USB Keyboard Pro elevates productivity without sacrificing size. Its open-source ethos and programmable firmware make it a favorite among tinkerers, coders, and hardware hackers alike