From Motorcycle Crash to Maker: Why Joe Built His Own One-Handed Controller
When a motorcycle accident cost Joe Tomasulo his right arm, it also abruptly cut him off from the PC games he loved. He tried to bend existing hardware to his needs, adapting a Razer Tartarus keypad, strapping on a wireless mouse and endlessly rebinding controls in software. The result was playable, but never natural: two separate devices designed for two hands, hacked into a one-handed compromise. Instead of waiting for a company to solve the problem, Joe decided to design the one handed controller he couldn’t buy. The device that emerged, the Ercham MK1, fuses mouse and keyboard functions into a single surface that can be fully driven with one hand. His journey, from crash survivor to hardware designer, underlines a hard truth about accessible gaming peripherals: the most meaningful innovations are still coming from players forced to build what mainstream manufacturers don’t offer.
The Ercham MK1: A Custom Gaming Controller That Re-Thinks Mouse and Keyboard
Joe’s Ercham MK1 starts from a deceptively simple idea: if two peripherals are the barrier, collapse them into one. The unit sits flat on a desk, with an optical sensor on its underside so the entire controller glides like a conventional mouse. On top, the hand can simultaneously move, click, scroll and trigger more than 30 programmable inputs laid out in a compact grid within natural finger reach. A strap system secures the hand to the surface, reducing the need for a tight grip and helping players with limited strength or residual limb use maintain precision over long sessions. Crucially, this custom gaming controller is ambidextrous; angled control modules on both sides allow it to work for either hand, unlike most gaming keypads that default to the left. Designed with amputees and stroke survivors in mind, it also caters to players managing RSI, chronic pain and other mobility challenges.
Where Accessible Gaming Peripherals Still Fall Short for One-Handed Play
Joe’s experience exposes a wider gap in accessible gaming peripherals. Many products marketed to disabled or one-handed gamers are essentially modified versions of standard gear: single-hand keypads, extra buttons, or software remapping tools. These can be effective for some console setups and specific genres, but they rarely replace the full flexibility of a mouse-and-keyboard combo that PC gaming assumes by default. For players who can only use one hand, managing camera control, movement and complex keybinds often means juggling multiple devices or relying on awkward workarounds. Existing keypads are usually designed for the left hand only, sidelining right-handed amputees and people with right-side impairments. And even when hardware can technically be reconfigured, ergonomics, fatigue and inconsistent support across games become persistent obstacles. The Ercham MK1 demonstrates how a purpose-built adaptive gamepad design can address these pain points, but its very existence highlights how few comparable options exist off the shelf.
Design Priorities: What Truly Inclusive PC Gaming Hardware Must Get Right
The Ercham MK1 encapsulates several principles that accessible hardware designers increasingly view as non-negotiable. Ergonomics comes first: the flat, glideable base and hand strap reduce strain for players who can’t maintain a traditional mouse grip, and the dense grid of keys keeps actions within minimal reach. Remappability is equally critical. With more than 30 programmable inputs and macro support, a one handed controller can translate complex control schemes into manageable layouts tailored to each game and player. Durability and reliability matter too, because players may exert unconventional forces or use the device for many hours each day. Finally, true accessibility depends on broad compatibility: plug-and-play support across PC platforms and, ideally, consoles so that users do not need separate setups. Joe’s design hints at a future where adaptive gamepad design is not a niche add-on, but a baseline expectation for inclusive PC gaming hardware.
Why Community Innovation Still Matters More Than Brand Checkboxes
Major gaming brands have started to talk more about accessibility, but Joe’s story shows why community-led hardware remains vital. The Ercham MK1 did not emerge from a focus group; it grew out of a hacked-together prototype built by someone who genuinely needed it and could not wait for a corporate roadmap. That urgency led to features big brands often overlook, like full ambidexterity and a focus on users with very limited grip strength. As esports expands and games become more socially central, excluding people for whom standard devices are unusable is no longer acceptable. Accessible hardware opens doors, from competitive play to casual hangouts and content creation. Community inventors and disabled players will continue to define what truly inclusive PC gaming looks like. The industry’s next step is to listen, collaborate and scale these ideas, instead of treating accessibility as an afterthought.