# One-Hand Gaming Controllers Ercham MK1 Controller Combines Keyboard and Mouse into a Single Device By Amy Duong | Published 2026-04-28 | Tech Source: Trend Hunter, https://www.trendhunter.com/trends/mk1-controller References: [reddit](https://www.reddit.com/r/pcmasterrace/comments/1svqyza/the_onehanded_gaming_controller_i_designed_after/)  The Ercham [MK1](https://www.trendhunter.com/trends/timex-and-fortnite) controller introduces a one-handed input system designed to replace the traditional keyboard and mouse setup. The Ercham MK1 controller was developed by Joe Tomasulo after losing his right arm in a motorcycle accident, leading him to build a device that allows full control with one hand. It integrates an optical sensor underneath the unit, enabling it to function as a mouse while a compact grid of over 30 [programmable keys](https://www.trendhunter.com/trends/x5-alteron) handles input simultaneously. The design places all controls within natural finger reach, supported by a strap system that stabilizes the hand during extended use. Angled control modules and dual-side inputs allow the device to be used with either hand, departing from standard gaming keypads that typically favor left-hand use. The layout supports gaming, productivity tasks, and macro-based workflows, with programmable inputs allowing customization across applications. Image Credit: Joe Tomasulo ## Trend Insights (Trend Hunter) - Score: 7.4/10 - Popularity: 76% | Activity: 74% | Freshness: 72% - Audience gender: 50% men, 50% women - Primary generations: Gen Z, Millennial, Gen X - Top markets: North America, South America, Europe, Asia, Africa ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Tech](https://www.trendhunter.com/tech) > [Games](https://www.trendhunter.com/games) ## Key Themes ### What's Driving This Trend - **One-handed Input Systems:** A growing focus on compact, single-handed controllers suggests novel form factors that could replace dual-device setups for many users. - **Ambidextrous Controller Design:** Designs that support equal functionality for left- and right-handed use indicate opportunities for inclusive product lines that broaden market reach. - **Integrated Pointing and Key Grids:** Convergence of optical sensors with dense programmable key arrays points to new hybrid devices that combine precision pointing and complex input in one unit. ### Who This Affects Most - **Gaming Hardware:** Next-generation controllers with one-handed layouts present possibilities for differentiated peripherals targeting competitive and accessibility-conscious gamers. - **Assistive Technology:** Adaptive input devices tailored to users with limb differences reveal avenues for personalized hardware and software ecosystems that enhance independence. - **Productivity Software:** Macro-driven workflows and compact key grids suggest opportunities for software platforms to optimize application-specific mappings and context-aware shortcuts. ## Related on Trend Hunter - [Heritage Fragrance Expansion Lineups](https://www.trendhunter.com/trends/jacques-bogart.md) - [Fully Recyclable Oil Packaging](https://www.trendhunter.com/trends/frylight-packaging.md) - [Dual-Chamber Beauty Packaging](https://www.trendhunter.com/trends/dualchamber-beauty-packaging.md) - [Generous Student Bundle Offers](https://www.trendhunter.com/trends/ultimate-college-bundle.md) - [Organic Surface Hypercar Concepts](https://www.trendhunter.com/trends/aston-martin-veil-concept.md) - [Heritage Padel Collections](https://www.trendhunter.com/trends/padel-collection.md) - [Accessible Plane Cabin Solutions](https://www.trendhunter.com/trends/aircraft-interiors.md) - [Overhead Bin Retrofit Solutions](https://www.trendhunter.com/trends/mechanical-lift-system.md) - [Design-Led Dorm Furnishings](https://www.trendhunter.com/trends/dormify.md)