The Coolest Controller Mod, Hands Down

Video games are a great way to relax, and sometimes get your heart rate up at the same time. But unless you’re playing something like Dance Dance Revolution, the controls pretty much always require the use of both hands. Even the old Atari controller benefited from using the other hand for support.

But what if you don’t have the use of both hands? Or you have a repetitive stress injury? Or you just want to eat cheese curls with chopsticks while you play? [Akaki Kuumeri] has you covered with one of the hands-down greatest uses for 3D printing we’ve seen — a PlayStation DualShock 4 controller modified for one-handed use. If this looks familiar, it may be because [Akaki] made a PS5 controller version a while back, but who can get one of those, anyway?

Though [Akaki] does most of the demonstrating in the video below with their left hand, they were cool enough to make a right-handed version as well. In the left-handed version, the symbol buttons and right trigger are actuated with the left hand, and the right joystick is used by moving the whole controller against your leg, the table, the arm of the couch, or whatever you wish.

[Akaki] even designed some optional pieces, including a leg strap. The right-hand version of course does the D-pad instead. But what should the order of the arrow buttons be? After much contemplation, [Akaki] settled on the standard DDR configuration of ←↓↑→.

We love that the symbols are made from raw filament pressed into grooves, and think it’s totally awesome that this is made to be attached to the controller and removed with one hand. Check out the video below to see it in action with a handful of games.

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Custom Reddit Keyboard Only Needs One Hand

Sometimes you might want to browse your favorite social media site while eating a sandwich, or throwing darts, or fending off an attacker with a sword. You know, normal things that might occupy only one of your hands. If you’ve ever found yourself in such a situation, then this custom Reddit keyboard could be for you.

Built by [jangxx], this little board is about as simple as it gets. Even if you aren’t looking for a way to browse /r/cooking while practicing your single-handed egg cracking technique, the same principles could be used to quickly throw together a macro keyboard for whatever your particular needs might be.

Inside the 3D printed enclosure is nothing more exotic than an Arduino Pro Micro and five Cherry MX Red switches. The switches have been wired directly to the GPIO pins on the Arduino, and a simple Sketch takes care of the rest. [jangxx] has written the code in such a way that you can easily define the mapping of USB HID keys to physical switches right at the top of the file, making it easy to reuse for your own purposes.

As simple as this project is, we really like the trouble that [jangxx] went through on the 3D printed key caps. The white up and down arrows allow you to navigate through the posts, and the center key selects the one you want to view. Since it’s for Reddit, naturally the red and blue buttons for rapid voting. When you want to go back to the list of posts, just hit the center button again.

Back in 2011 we saw a dedicated Reddit voting peripheral, but we think the addition of simple navigation keys makes this project a bit more compelling. Incidentally, if you can think of any other reason you might want a one-handed keyboard for browsing Reddit…we definitely don’t want to hear about it.

Smartphone Case Doubles As Chording Keyboard, With Gesture Inputs

Smartphones and other modern computing devices are wonderful things, but for those with disabilities interacting with them isn’t always easy. In trying to improve accessibility, [Dougie Mann] created TypeCase, a combination gestural input device and chording keyboard that exists in a kind of symbiotic relationship with a user’s smartphone.

With TypeCase, a user can control a computer (or the smartphone itself) with gestures, emulate a mouse, or use the device as a one-handed chording keyboard for text input. The latter provides an alternative to voice input, which can be awkward in public areas.

The buttons and motion sensors allow for one-handed button and gestural input while holding the phone, and the Bluetooth connectivity means that the device acts and works just like a wireless mouse or keyboard. The electronics consist mainly of an Adafruit Feather 32u4 Bluefruit LE, and [Dougie] used 3D Hub’s on-demand printing service to create the enclosures once the design work was complete. Since TypeCase doubles as a protective smartphone case, users have no need to carry or manage a separate device.

TypeCase’s use cases are probably best expressed by [Dougie]’s demo video, embedded below. Chording keyboards have a higher learning curve, but they can be very compact. One-handed text input does remind us somewhat of a very different approach that had the user make gestures in patterns reminiscent of Palm’s old Graffiti system; perhaps easier to learn but not nearly as discreet.

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Single Hand Keyboard For Tablets

To us it makes a lot of sense to hold the tablet in one hand and type with the other. That’s exactly how [Adam Kumpf] has implemented this one-handed typing interface which was originally conceived by [Doug Engelbart].

As you can see, there’s a large contextual area for each finger on your right hand. Letters and navigational keystrokes are input through this interface based on single touches, or combinations up to and including all five digits. This offers up 32 possible combinations (including all on and all off) which is enough to cover the modern English alphabet.

[Adam’s] demo page works for most tablets so give it a whirl. Yes, it works with iDevices too which is a surprise as we would have thought this was using Flash. If you’re not near a touch-sensitive device you can get the gist of the operation from the demo video embedded after the break.

Now, who’s going to be the first to make this into a replacement keyboard on iOS 5?

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