Example Wiring Diagram

I hope you know pullup resistor configurations. Google is you friend if you don't.
External resistors only if your microcontroller doesn't have internal resistors.

#include <Bounce.h> // this is needed to use the bounce library



#define KEYP_1 KEY_Z // here we are making it easier to change the key bindings later



// button pins

const int key_1 = 0; // input pin for your keyswitch; not necessary but helpful for doing other things like LED effects



Bounce button1 = Bounce(0, 8); // first number is pin number and second number is debounce time



void setup() {

  pinMode(key_1, INPUT_PULLUP); // here we are telling the teensy what pin 0 is being used for

}



void loop() {



  button1.update(); // this is reqired for your code to  actually send the keypress to the computer



  if (button1.fallingEdge()) { // fallingEdge is when the key is pressed

    Keyboard.press(KEYP_1);

  }

  if (button1.risingEdge()) { // risingEdge is when the key is not pressed

    Keyboard.release(KEYP_1);

  }

}

pinMode(key_1, INPUT);

#define <KEYP_X> <keycode> // keycode is the keycode for whatever you want the key to be



const int <key_X> = <pin> // pin is the pin your button is connected to



Bounce <buttonX> = Bounce(<Y>, 8); // Y is the pin number



pinMode(<key_X>, INPUT_PULLUP); 



<buttonX>.update(); 



if (<buttonX>.fallingEdge()) { 

Keyboard.press(<KEYP_X>);

}

if (<buttonX>.risingEdge()) { 

Keyboard.release(<KEYP_X>);

}

Some 3D inspiration to get you started

Mine ended up like this

Sanwa build







New Build 12/29/2017

Thnikk wrote:

If there's anything I'd add, it would be that the Teensy LC is still the best option of the Teensy series for its price and is still more than powerful enough, even if you wanted to add LEDs and do some fancy stuff. Also, the trinket is a nice option but harder to use for a 4-key since there's only 3 pins you can use for input while communicating with the computer, so you'd have to use some magic with resistors to get multiple buttons working on the same pin. They are great as a cheap controller for a 2-3 button keypad, though!

Saphirshroom wrote:

Pretty cool.
Is it comfortable to play on? Mostly asking because of the screws and the edges, and because it looks very light.

KanoSet wrote:

it's sad that i can't get most of the list if not all
rip fun i could get making one
nice btw

The Gambler wrote:

Updated with new info, hope the new stuff is useful.

Also wondering if this thread should be in Development or G&R. It feels like a bit of both.

school takes so much time

ZenithPhantasm wrote:

I was hoping you would design custom housing for MX switches instead. Ones that are easily swappable.

ZenithPhantasm wrote:

I was hoping you would design custom housing for MX switches instead. Ones that are easily swappable.

ArionW wrote:

Looks great! I'm planning to build my own osu! keyboard based on ATMEGA8, it may not be so easy in terms of coding, but this microcontroller is almost 20 times cheaper. Although I will probably use your wiring diagram as a reference. So, thanks for that!

fb39ca4 wrote:

ArionW wrote:

Looks great! I'm planning to build my own osu! keyboard based on ATMEGA8, it may not be so easy in terms of coding, but this microcontroller is almost 20 times cheaper. Although I will probably use your wiring diagram as a reference. So, thanks for that!

Did you ever build your keyboard? The Atmega8 doesn't have any USB hardware, so you would have to bit-bang everything. If you just need something cheap, you can buy Arduino Pro Micro clones pretty cheap.

iman mutou wrote:

didn't expect to find such project here. I used to work on Arduino projects and I can get the most of the stuff, but I don't know where to get Cherry MX switches. Maybe I'll try it once I get them since it looks interesting.

dongwon900 wrote:

I've been looking at a lot of these osu! keyboards lately. thnikk's keypads are very nice, as well as the one on the osu! store.
I do a lot of keyboards built from parts and this is nothing completely new to me, but its the first time I will be hand-wiring switches.

I'm just gonna use the arduino nano clone from dx, and a custom cnc cut acrylic housing.
What I will add to the previous designs is a palmrest. I'll come up with some more designs in the future.
Switches will be custom lubed 55g vintage cherry mx blacks. my all-time fave

Vodes wrote:

I will probably try to make one with a pro micro, Kailh Speed Copper switches and a case I have laying around. Maybe I will post some pictures then

Vodes wrote:

Well. All the stuff came in yesterday morning. So I made a case out of some wood I found in my basement. It was my first time soldering anything. I'm okay with what came out of it xd It's a Pro Micro (5v, 16mhz) I bought from mehkee aswell as the keyswitches (Kailh Speed Copper). The keycaps are some cheap blue ones from banggood.

As for people living in germany shipping was quite fast except for the mehkee stuff. (Almost 2 weeks for that)

Pictures (bad Camera used)

Kiciuk wrote:

What's better these keypads can be made with almost anything.
I made mine with old pad PCB.
Only soldered switches properly and it works.

Overall cost=2 switches 0.52$
Yes i know it looks like shit, but hey it works.

Vodes wrote:

Here is a bad video for my keyboard

Youtube Video

The Gambler wrote:

Vodes wrote:

Here is a bad video for my keyboard

Youtube Video

Don't worry, mine sounds like a toy too. My Sanwa build sounds like hitting a shoebox with a stick.

TV-Size Kun wrote:

For Teesy 2.0 and 2.0 ++ this will work?

DireDoge wrote:

I know this post is pretty old, but I just want to say thank you for this guide. It helped me a lot!

quinton69 wrote:

I can't understand any thing about some techinacl shit anyone can help me

In indonesia someone sell it the price is too high about 40$ and I can't use my credit card too (controlled by my mom)

quinton69 wrote:

Anyone know teensy alternative for the no-no keyboard i found the Leonardo one help me pls and in Indonesia it's very rare to found 3d printing place