Turning A Typewriter Into A Mechanical Keyboard

Is your keyboard too quiet? Is your Cherry MX Blue board not driving your coworkers crazy enough? If the machine gun fire of a buckling spring keyboard isn’t enough for you, there’s only one solution: [Russell]’s typewriter turned into a mechanical keyboard.

Converting typewriters into keyboards has been done for a very long time; teletypes, the first computer keyboards, were basically typewriters, and the 1970s saw a number of IBM Selectrics converted into a keyboard with serial output. Even in recent years, typewriters have been converted into keyboards with the help of some switches and an ATMega. [Russell]’s mechanical keyboard improves on all of these builds by making the electronic interface dead simple, and a project that can be done by anyone.

Instead of installing switches underneath every key or futzing about with the weird mechanics of a Selectric typewriter, [Russell] is only installing a touch-sensitive position sensor into the frame of the typewriter. When a key is pressed, it strikes a crossbar in the frame of the typewriter. With a single ADC chip and a Raspberry Pi, [Russell] can determine which key was pressed and use that information to output a character to a terminal.

It’s a very simple solution for an electrical interface to a mechanical device, and the project seems to work well enough. [Russell] is using his new keyboard with Vim, even, something you can check out in the video below.

Continue reading “Turning A Typewriter Into A Mechanical Keyboard”

Hackaday Prize Entry: Emoticon Keyboard

The Internet is raising an entire generation that can speak entirely in emoticons. This reverses the six thousand year old evolution of written language and makes us (╯°□°)╯︵ ┻━┻. It is, however, fun. There is a problem with these newfangled emoticons: no one actually types them; they’re all copied and pasted. This is inefficient, and once again technology is here to save us once again.

For his Hackaday Prize entry, [Duncan] is working on an EmojiPad. It’s a (mechanical!) keyboard for typing emoticons, but it can also be used for gaming, CAD design, or as a USB MIDI device.

The keyboard uses 16 Cherry MX switches in a standard diode matrix configuration. This is a USB keyboard, and for the controller, [Duncan] is using an ATMega328 with the V-USB library This is all well-worn territory for the mechanical keyboard crowd, so to spice things up, [Duncan] is going to add individually addressable LEDs underneath each keycap. The ATMega328 doesn’t have enough pins to do this the normal way, so all the LEDs will be Charlieplexed.

A keyboard for emoticons demands custom keycaps, but [Duncan] is having a hard time finding a good solution. Right now he’s planning on using blank keycaps with vinyl decals, a somewhat expensive option at $1 USD a keycap. A better, even more expensive option exists, but for something as ephemeral as an emoticon keyboard a sticker will do just fine.

The 2015 Hackaday Prize is sponsored by:

Hackaday Links: May 24, 2015

A few months ago, we heard about a random guy finding injection molds for old Commodore computers. He did what the best of us would do and started a Kickstarter to remanufacture these cool old cases. It’s the best story on retrocomputing this year, and someone else figured out they could remanufacture Commodore 64 keycaps. If you got one of these remanufactured cases, give the keycaps a look.

Remember this Android app that will tell you the value of resistors by reading their color code. Another option for the iOS crowd was presented at Maker Faire last weekend. It’s called ResistorVision, and it’s perfect for the colorblind people out there. An Android version of ResistorVision will be released sometime in the near future.

A few folks at Langly Research Center have a very cool job. They built a hybrid electric tilt wing plane with eight motors on the wing and two on the tail. It’s ultimately powered by two 8 hp diesel engines that charge Liion batteries. When it comes to hydrocarbon-powered hovering behemoths, our heart is with Goliath.

A bottom-of-the-line avionics panel for a small private plane costs about $10,000. How do you reduce the cost? Getting rid of FAA certification? Yeah. And by putting a Raspberry Pi in it. It was expoed last month at the Sun ‘N Fun in Florida, and it’s exactly what the pilots out there would expect: a flight system running on a Raspberry Pi. It was installed in a Zenith 750, a 2-seat LSA, registered as an experimental. You can put just about anything in the cabin of one of these, and the FAA is okay with it. If it’ll ever be certified is anyone’s guess.

3D Printed Mechanical Keyboard

Tired of buying boring keyboards with almost no customization available? We’ve seen lots of keyboard hacks before, but if you want to take it a step further — why not make it from scratch and have it 3D printed?

Reddit user [Wildpanic] has just finished his first attempt at a 3D printed keyboard and he’s even shared the files to make it over at Thingiverse. The frame is entirely 3D printed, but he’s chosen to use pre-manufactured key switches, which is probably for the best. They are the Cherry MX Green variety, which have these little clips in the side which make them super easy to install — especially on a 3D printed frame.

He’s wired them all using 20ga copper wire (which might be a bit overkill) to a Teensy 2.0 microcontroller. The diodes he chosen to use are 1N4148 which he was able to get fairly inexpensively. Total cost is just a bit over $50. Not bad!

Oh and in case you’re wondering, he’s chosen the style of keyboard that makes use of 4 keys for the space bar — as made popular by the planck style custom keyboards — you know, for people who love symmetry.

For more awesome keyboard hacks, check out this roundup [Adam Fabio] put together in a Hacklet last year!

[via reddit]

RaspPi/Keyboard Project called Kiiboard, Still Pronounced ‘keyboard’

[b10nik] wrote in to tell us about a pretty sweet project that he just finished up. It’s a mechanical keyboard with an integrated Raspberry Pi 2 Model B inside.

[b10nik] purchased a new Filco Ninja Majestouch-2 keyboard just for this project. Although it may make some people cringe, the keyboard was immediately taken apart in order to find an open cavity for the Raspberry Pi. Luckily there was space available towards the left rear of the keyboard case.

RaspPi2 Keyboard insideIf you are familiar with the Raspberry Pi 2 Model B, you know that all of the connections are not on the same side of the board. The USB, audio, HDMI and Ethernet jacks were removed from the PCB. The Ethernet port is not needed since this hack uses WiFi, but those those other ports were extended and terminated in a custom 3D printed I/O panel . The stock keyboard case had to be cut to fit the new panel which results in a very clean finished look.

There’s one more trick up this keyboard’s sleeve, it can be used with the internal Raspberry Pi or be used as a standard keyboard. This is done by way of a FSUSB30MUX USB switch IC that completely disconnects the Raspberry Pi from the keyboard’s USB output.

For another RaspPi/Keyboard solution, check out this concept from a few years ago using a Cherry G80-3000 mechanical keyboard.

 

[Sprite_TM]’s Keyboard Plays Snake

Hackaday Prize judge, hacker extraordinaire, and generally awesome dude [Sprite_TM] spends a lot of time at his computer, and that means a lot of time typing on his keyboard. He recently picked up a board with the latest fad in the world of keyboards, a board with individually addressable LEDs. He took this board to work and a colleague jokingly said, ‘You’ve had this keyboard for 24 hours now, and it has a bunch of LEDs and some arrow keys. I’m disappointed you haven’t got Snake running on it yet.” Thus began the quest to put the one game found on all Nokia phones on a keyboard.

The keyboard in question is a Coolermaster Quickfire Rapid-I, a board that’s marketed as having an ARM Cortex CPU. Pulling apart the board, [Sprite] found a bunch of MX Browns, some LEDs, and a 72MHz ARM Cortex-M3 with 127k of Flash and 32k of RAM. That’s an incredible amount of processing power for a keyboard, and after finding the SWD port, [Sprite] attempted to dump the Flash. The security bit was set. There was another way, however.

Coolermaster is actively working on the firmware, killing bugs, adding lighting modes, and putting all these updates on their website. The firmware updater is distributed as an executable with US and EU versions; the EU version has another key. Figuring the only difference between these versions would be the firmware itself, [Sprite] got his hands on both versions, did a binary diff, and found only one 16k block of data at the end of the file was different. There’s the firmware. It was XOR encrypted, but that’s obvious if you know what to look for.

flashdata The firmware wasn’t complete, though; there were jumps to places outside the code [Sprite] had and a large block looked corrupted. There’s another thing you can do with an executable file: run it. With USBPcap running in the background while executing the firmware updater, [Sprite] could read exactly what was happening when the keyboard was updating. With a small executable that gets around the weirdness of the updater, [Sprite] had a backup copy of the keyboard’s firmware. Even if he bricked the keyboard, he could always bring it back to a stock state. It was time to program Snake.

The first part of writing new firmware was finding a place that had some Flash and RAM to store the new code. This wasn’t hard; there was 64k of Flash free and 28K of unused RAM. The calls to the Snake routine were modified from the variables the original firmware had. If, for example, the original keyboard had a call to change the PWM, [Sprite] could change that to the Snake routine.

Snake is fun, but with a huge, powerful ARM in a device that people will just plug into their keyboard, there’s a lot more you can do with a hacked keyboard. Keyloggers and a BadUSB are extremely possible, especially with firmware that can be updated from a computer. To counter that, [Sprite] added the requirement for a physical condition in order to enter Flash mode. Now, the firmware will only update for about 10 seconds after pressing the fn+f key combination.

There’s more to playing Snake on a keyboard; Sprite has also written a new lighting mode, a fluid simulation thingy that will surely annoy anyone who can’t touch type. You can see the videos of that below.

Continue reading “[Sprite_TM]’s Keyboard Plays Snake”

Hacklet 17 – Keyboards

This week on The Hacklet we’re featuring some of the best keyboard hacks from Hackaday.io!

Hackers are really into their keyboards. Everyone has a favorite, and those favorites vary wildly. Mechanical, soft touch, ergonomic, QWERTY, DVORAK, chorded, you name it, there is a hacker, maker, or engineer who loves it, or absolutely hates it. For some, no commercial product is perfect. All is not lost though, as a custom keyboard is just a hack away!

ergo60

[Warren Janssens] gets things rolling with Ergo60, his 60 key ergonomic keyboard. [Warren’s] layout is a pair of 25 key hand clusters, each with a matching 5 key thumb cluster. This layout minimizes lateral wrist movement. With the reduced key count and stacked keys, the user’s hands never move from the home row. [Warren] rolled his own PCBs for Ergo60. A Teensy 2.0 running a fork of TMK serves as Ergo60’s controller. [Warren’s] is running Cherry Black switches and his keycaps are from Signature Plastics. [Warren] is using Ergo60 as his daily driver these days, so it’s no surprise that he’s set the “Completed Project” tag.

keycaps

Some say he needs no keyboard at all, and that his heartbeat sounds just like an IBM Model M. All we know is he’s called [Brian Benchoff]. [Brian’s] created a pair of minimalist keyboard projects. The Unhappy Hacking Keyboard takes us back to basics. After all, computers run on 1’s and 0’s, right? What more could a person need? Apparently just a space and return. Unhappy Hacking Keyboard uses an ATtiny85 with V-USB as the controller and the interface. Keys are cherry MX blues. The keycaps are [Brian’s] own Hackaday Cherry MX Keycaps printed by Shapeways.

zxkeyboardAn entire generation of hackers don’t know the joy of typing on a tiny rubber keyboard. [Alistair MacDonald] aimed to fix that, so he turned an old computer into a keyboard with his ZX Keyboard. [Alistair] started with a broken ZX Spectrum. He gutted the original electronics and added an Ardunio Pro Mini running the V-USB library. [Alistair] directly wired the row and column I/O lines from the keyboard to his Arduino. The result is a keyboard which is the perfect size for cell phones, Raspberry Pi’s and the like.

chordkey[Servo] teaches us new ways to type with Chordy KEY, his chording keyboard project. Chordy Key is meant to be used in the left hand. Five finger buttons and three thumb buttons are all that is needed to chord out 64 different letters and symbols. [Servo] utilized an ATmega32U4 powered Sparkfun pro micro to control his keyboard. Chordy Key is a proof of concept, but with [Servos’s] use of 3D printed parts, Chordy Key looks like it’s ready for your next wearable computing project!

chord2[jmptable] is also working on a chorded keyboard design. Chord Keyboard uses only 7 keys to send the entire ASCII character set and a few control combinations. [jmptable] used an ATmega328P as his processor. Chord keyboard isn’t wired though. An RN-42-HID module provides bluetooth connectivity to the world.

[jmptable] has provided an amazing amount of detail on his research, including one of his goals of adding a chorded keyboard to the Gameboy Advance. They keyboard itself would be mounted on the spine of a game cartridge. We would love to see that idea come to fruition, [Servo]!

 

mightyFinally we have [Gertlex], who just wanted a scroll wheel embedded in his keyboard. He got there with the help of an Apple Mighty Mouse. Keyboard with Apple Mouse Scroll Ball is one of those hacks that looks like it original equipment. [Gertlex] took a drill to a Targus slim USB keyboard, putting a small hole right between the ESC and F1 keys. He fit the scroll ball from his Apple Mighty Mouse in the hole. Electronics are as simple as plugging the mouse and keyboard into the same USB hub. The only downside to the design is that [Gertlex’s] keyboard doesn’t recognize fast enough to send key presses during the boot process.

That’s just about enough keystrokes for this episode of The Hacklet. As always, see you next week. Same hack time, same hack channel, bringing you the best of Hackaday.io!

Update – check our our keyboard list right here!