The Ploopy A+ expands the company's open-source trackball platform with eight programmable buttons, dual rotary knobs and layered controls powered by QMK firmware. Two additional buttons introduced over the earlier Adept design also function as rotary encoders, supporting high-resolution vertical and horizontal scrolling while remaining fully remappable through VIA. Gesture controls allow users to hold a button and move the trackball in eight directions to trigger configurable shortcuts, while dual operating layers provide access to navigation functions and on-device settings without requiring companion software. LED indicators display the active layer directly on the device.
The ambidextrous design incorporates a detachable wrist rest that can be removed or permanently secured to the chassis. A Pixart PMW-3360 optical sensor delivers 1,000 Hz polling, while Omron D2LS-21 switches handle button inputs. The 3D-printed enclosure, firmware, hardware files and assembly documentation are released as open-source resources.
Image Credit: Ploopy
Key Themes Behind This Trend
- Open-source Peripherals
- Community-accessible hardware files and firmware create room for customizable input devices tailored to niche workflows, accessibility needs and professional software environments.
- Programmable Ergonomic Controls
- Highly remappable buttons, gesture inputs and layered functions signal a shift toward peripherals that reduce repetitive strain while consolidating complex commands into compact hardware.
- Software-free Customization
- On-device settings, visual layer indicators and firmware-based configuration support a future where advanced personalization works across systems without proprietary companion apps.
Where This Applies
- Computer Hardware
- Modular, 3D-printed and open-source device architectures introduce new competitive models built around repairability, user modification and enthusiast-led product iteration.
- Workplace Ergonomics
- Ambidextrous designs, removable wrist rests and precision trackball controls expand possibilities for comfort-focused tools that adapt to varied desk setups and physical requirements.
- Gaming Accessories
- High-polling sensors, rotary encoders and shortcut gestures blur the line between productivity peripherals and performance-grade controllers for gamers, streamers and power users.
