ERCHAM

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Launching 2026
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one hand. full control.

Built for one hand. Designed for everyone.

Ercham MK1

ONE-HANDED GAMING & PRODUCTIVITY CONTROLLER

Built-in mouse - Fully programmable Ambidextrous

full customization across colors, themes, RGB, and control layouts.

360 view

Who This is For

ERCHAM MK1 is built for people who cannot use a traditional keyboard and mouse, including:

Amputees
Stroke survivors
Nerve and brachial plexus injuries
RSI and chronic pain users
One-handed gamers

These users need to move, aim, and press keys at the same time with one hand, something normal accessibility gear can’t do .

ERCHAM is also designed for people who want better performance and ergonomics, including:Power users and streamersMMO, MOBA, and FPS playersCreators, editors, and CAD usersPeople who spend long hours at a computer

Features:

True built-in mouse – A real optical sensor inside the device lets you aim, scroll, and move naturally while pressing keys.Full programmable keypad – 44 total customizable keys for movement, abilities, macros, and shortcuts.One-handed control – Use mouse and keys at the same time with one hand — no mode switching or compromises.Stabilizing strap & palm rest – Locks your hand in place for comfort, accuracy, and long sessions.Fully ambidextrous – Works for left- or right-handed users with the same device.Dual Ambidextrous / Clickable Scroll WheelDesigned for real users – Built for amputees, nerve injuries, RSI, stroke survivors, and anyone who can’t use a traditional keyboard + mouse.Design to work with all. (PC, Mac, Linux, Playstation, Xbox)Fully Customizable shells, skins, colors, schemes!

Pro Model Coming Soon! Add Suggestions Here

“There is literally nothing like this on the market. I would buy this immediately.”
— r/DisabledGamers user (anonymous)

“This would give me back my ability to play.”
— amputee gamer
(anonymous)

“Why hasn’t a big company made this already?”
— one-handed PC gamer
(anonymous)

(Real feedback from the disabled gaming community - shared anonymously)

Why ERCHAM is different

I guess, first off The name ERCHAM comes from Erchamion, an Elvish word meaning “one-handed.” It felt right — a name rooted in resilience, with a modern, tech-forward edge. Plus im a huge nerdI set out to build a device that lets people with limb differences work and play with either hand. Ambidexterity matters to me — because if someone in my situation only had use of their other arm, most existing devices would be useless. The Razer Tartarus, for example, is left-hand only, has no mouse, and no way to stabilize your hand. And while the Azeron Cyro points in the right direction, it’s expensive, limited to one specific hand, and many users struggle with quality and durability.ERCHAM was designed to solve all of that — one device, either hand, real mouse control, and a strap-stabilized grip built for true one-handed use.

Feature	ERCHAM MK1	Razer Tartarus	Azeron Cyro
Real mouse built in	✅ Yes	❌ No	✅ Yes
One-handed control	✅ Full	⚠️ Partial	⚠️ Partial
Ambidextrous (left & right)	✅ Yes	❌ Left-hand only	❌ Separate models
Strap-stabilized grip	✅ Yes	❌ No	⚠️ Partial
Designed for limb differences	✅ Yes	❌ No	⚠️ Limited
Gaming + productivity	✅ Yes	⚠️ Gaming-only	⚠️ Gaming-focused
Patent-pending system	✅ Yes	❌ No	❌ No
Price Target	~$199	~$80	~$230+

Founder Story

Hi — I’m Joe. In 2020, a motorcycle accident left me permanently without my right arm and suddenly locked me out of gaming, because nothing combined aiming, movement, and actions into one affordable, high-performance device.So I built one: I glued a mouse to a Razer Tartarus, added a strap, and remapped everything so I could aim, move, shoot, and interact with one hand—and it worked.We took what the Tartarus got right and finished it: made it fully ambidextrous so losing either hand doesn’t exclude you, added a built-in mouse sensor, and designed a stabilizing strap system for precision and long-session comfort.That scrappy prototype became ERCHAM, essentially the Tartarus V3, not a workaround but what it should have been from the start —because accessibility shouldn’t mean compromise, and performance, precision, and dignity belong in the same device.