The keyboard tag has no wiki summary.
2
votes
2answers
121 views
+50
Building a wireless keyboard (preferably with a kit)
This is the project that spawned these earlier questions.
I'd like to create my own keyboard. Functionally it's going to be a keyboard, but visually it's going to bear more semblance to a joystick ...
3
votes
1answer
78 views
Electrical properties of keyboard keys
I'm looking to hack together a keyboard by taking an existing keyboard and connecting it to switches that I'll assemble separately.
What I want to know: What should be the electrical properties of ...
3
votes
2answers
92 views
How to uniquely identify USB HID class device?
I would like to identify a USB keyboard uniquely(something equivalent to unique mac-id for the Ethernet cards) on a computer. Does the USB HID profile has a support for such identification ? If so ...
3
votes
1answer
69 views
Tuning an electric organ keyboard
I have an old (1960's) Whippany Dart combo organ. Each set of three keys has a tuning pot that raises and lowers the pitch of those three notes (turning clockwise lowers the pitch, and ...
4
votes
3answers
156 views
How to find socket for keyboard connector?
I am looking for a socket which is able to receive the connector of the ThinkPad X41's keyboard. How do I identify the socket so that I can find it on the (German) market?
Background: I want to build ...
2
votes
1answer
245 views
Arduino as full fledged keyboard controller?
I am considering connecting a ThinkPad X4x keyboard to a PC, using a programmable KeyWarrior keyboard controller in between the keyboard's ribbon cable and the USB cable to connect it to the PC. Not ...
-2
votes
1answer
104 views
How Can I Program a Universal Application Keyboard? [closed]
IMPORTANT NOTE: This is a question from who has no experience and knowledge on this area. So before giving negative rep, please provide constructive suggestion.
I want to program a universal ...
0
votes
0answers
179 views
vUSB Keyboard with AtTiny using processing
I think that this is a very noob question, but... Anyway...
Here is the problem. I am trying to make a device that receive a RF code (333Mhz) and send to the keyboard (HID) via USB.
I already made ...
2
votes
3answers
202 views
How does the ZX80 keyboard avoid ghosting and masking?
I believe that a keyboard matrix needs a diode on each key to avoid ghosting and masking.
http://pcbheaven.com/wikipages/How_Key_Matrices_Works/
The ZX80 (and probably ZX81) has only a diode for ...
1
vote
1answer
327 views
using the PS2 keyboard library with Arduino Leonardo
I'm having difficulties getting the PJRC PS2 keyboard library working reliably with the Arduino Leonardo. I'm relatively new to using the Arduino, but this library seems to be the recommended way to ...
1
vote
1answer
142 views
usb keyboard with many simultaneous key presses
I am looking to make a keyboard that allows for 2 or so keys pressed at the same time by the same finger. ie s and w would both register and a total of 8-10 keys registered at 1 time. the keyboard ...
1
vote
2answers
581 views
Creating a keyboard with a microcontroller, do I need an input pin for each key?
I am planning to implement V-USB with an ATMega8 microcontroller. I am interested in implementing an HID device; more specifically, I want to try and make my own simple 26 key keyboard (each ...
2
votes
1answer
2k views
How to make an USB keyboard work with Bluetooth instead?
I have an USB keyboard (HHKB) which has some great irreplaceable features(That's why I would not like to buy a Bluetooth keyboard directly) and I love to use it very much. But the only improvement I ...
1
vote
0answers
95 views
Using a Keyboard in a 556 Stepped Tone Generator
I'm in the process of making a simple stepped tone generator using the 556 timer, but I want to be able to have different resistors to change the pitch of the tone I get out. I think it would be ...
0
votes
1answer
91 views
Keyboard and mouse chips to buy
i need to buy a keyboard and mouse chips(every thing in mouse and keyboard not made of plastic ) and i want to know what`s the prices of each and how to buy it and thnx in advance.
2
votes
1answer
84 views
How do you make the LEDs come on for a PS/2 keyboard?
I'm making a simple console type thing for the mbed with a PS/2 keyboard and VGA monitor. I have a PS/2 library working and can receive scancodes and such. I want to go above and beyond what it allows ...
1
vote
5answers
257 views
Interface 5v digital pulses to keyboard contacts?
I currently have the following bit of kit: Photoplethysmographic sensor for measuring heart rate
It outputs a 5v pulse each time your heart pulses. What I need is to do is interface this pulse output ...
4
votes
6answers
265 views
Need a device that can take single input and covert to a keyboard key press on USB
Let me explain what I'm doing currently.
We have made a finger heart rate monitor, each time your heart pulses a transistor is switched on via its base. The collector and emitter of the transistor ...
0
votes
1answer
157 views
Keyboard USB cable reconnnection
I've just tried to repair my keyboard's usb cable as it has been damaged right where it goes into the keyboard. I've cut out the bad part of the cable and reconnected the wires. I've tried it and all ...
-1
votes
1answer
322 views
DIY wireless keyboard from mouse [closed]
I was just wondering is there any way or has someone tried to make a wireless keyboard from a wireless mouse. I had a wireless mouse, which broke, but still works, and I wanted to make a wireless ...
1
vote
1answer
128 views
How do you output a frequency/note with a 1V octave keyboard controller?
To be specific, I made this:
from here
And to test the CV output, I used this schematic:
from here
It works as a oscillator. Every time I hit a key it will oscillate at that note, but it wont ...
3
votes
1answer
719 views
Teensy usb keyboard + Android
I've just gotten one of these Teensy boards: http://www.pjrc.com/store/teensy_pins.html
I am trying to set it up using the basic keyboards tutorial. It is working correctly on Windows PC devices when ...
0
votes
1answer
324 views
Arduino Power On notebook PC
Is it possible to "Power On" notebook PC with Arduino (or with USB keyboard) without pressing notebooks power button ?
Notebook PC is Acer 5720Z.
4
votes
2answers
942 views
Can I get the chip or electronic kit of a USB keyboard alone whithout the plastic case?
first of all, understand that I have a very basic knowledge of electronics.
I have a Commodore 64 case and I want to turn it into a USB keyboard.
My approach would be taking a keyboard appart and ...
8
votes
3answers
2k views
Arduino PS/2 Keyboard Emulator Issues
Yes, I've searched the Arduino.cc forums and here. Yes, I've found the articles regarding the ps2dev library. Yes, I've read (okay, some I skimmed) the definitive PS/2 interface article at this ...
1
vote
2answers
1k views
Is there an easy way to test if my PS/2 -> USB adapter is passive?
I own a couple of PS/2 to USB adaptor/converter connectors that look like the following:
Is there anyway to test if these adapters are passive without disassembling them (or risking damage by ...
-6
votes
4answers
2k views
How to build a custom laptop computer with original chassis, keyboard, etc? [closed]
I'm interested in building a custom laptop computer with the hope of being able to sell it and make a profit. The only problem is I have no idea where to start. I have an idea for a laptop chassis ...
2
votes
2answers
598 views
'keyboard from scratch' registering key presses
For my first hardware hack I'm taking a stab at a 'mechanical keyboard from scratch' (where scratch means individual components).
I plan to use a teensy++ board (16MHz) and was wondering about how to ...
4
votes
1answer
254 views
what sensors to use in touch sensitive furniture
I'm trying to make a wooden table with a touch-sensitive top, made up of a mosaic of small wooden pieces resembling scrabble playing pieces separated by thin glass separations. each wooden piece would ...
1
vote
4answers
307 views
Keyboard fixing
I have near 5 keyboards broken because poured water or juice, etc...
Most problems are keys that don't work or swapped keys.
I want to know (just for electronics exercise - I know that keyboards are ...
1
vote
2answers
561 views
Adaptor to use old AT&T / keytronic keyboard with DB9 connector?
I have an old keyboard (circa 1998) with a male DB9, and I'd like to use it on a modern PC with a female PS/2. The keyboard is AT&T branded, Comcode #405748401, FCC ID CIG8AVE03417 Keytronic ...
4
votes
3answers
621 views
how to have custom Scancode set
I'm new to hardware field in general. For one of the projects, I'm trying to create a custom keyboard that will have some extra keys, say 20-25 more than the standard keyboard.
I read about scan ...
5
votes
1answer
399 views
Old Hall-Effect Keyswitches?
I have a keyboard from an old Silent 700 TTY that I'm trying to bring to life. The problem is that each individual keyswitch appears to be a hall effect sensor. There are no part numbers; the chip ...
4
votes
3answers
3k views
Cheapest, simplest way to implement a Bluetooth keyboard/mouse?
Thinking of building a device for sending text and probably mouse movement into a computer, but I want it to be wireless and compatible with many computers/PDAs/phones without a specialized dongle, ...
5
votes
3answers
2k views
Apple Desktop Bus (ADB) to USB Adapter
I have an old Apple keyboard that I would like to use but it uses the ADB bus instead of the newer USB bus. Griffin used to produce a product called the iMate which was an ADB-to-USB converter but ...
