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Drew: Here are my part search notes, May 2008. (Note, I think analog mux plus on-board ADC's might be a better option)
Digikey, in-stock search, Package with 64-128 pins, reveals three ADC...
This design is for two digital switches per key.
2 Arduino outputs -> 4 bit Binary Counter -> 4 to 16 Decoder (really a couple 3 by 8's ) -> 16 x 11 diode matrix -> 11 Arduino inputs....
Some Fatar Keybeds have used a conducting spring that can come into contact with two conducting rails as a keyswitch. Since the spring is used as an electrical contact, it is advantageous to...
The primary maintainer of the DIY Keyboard project is Drew Wagner. Any administrative questions can be addressed to him at moc.liamg|0891mwerd#moc.liamg|0891mwerd
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Currently the best explanation of the Janko key layout is at Noel Cragg's Page:
The Uniform Keyboard
Paul Vandervoort plays professionally on a Janko MIDI controller he build himself. He is in the...
How to Join the DIY Keyboard wiki
1. Create a Wikidot login.
2. Register to the diykeyboard google group, introduce yourself, and mention you'd like to be added to the wiki. Please include your...
The action of the keybed is what provides the mechanical interface between the musician's fingers and the keyboard. At one extreme the action could be as simple as a momentary pushbutton switch. At...
The actual arrangement of the keys can have a significant impact on how difficult it is to learn to play a keyboard instrument, and what musical styles are possible even for those skilled at the...
The key scanning circuit provides the electronic interface between the key switches and the micro-controller. Digital keyboards have many key switches. At least 88*2 are required for a velocity...
Key switches provide the interface between the mechanical and the electrical portions of the piano.
Rubber Membrane Keyswitches
The vast majority of commercial keyboards use rubber membrane...
Key Designs
DIY Keyboard keychain
This keychain was generated from Rhinoscript code that is stored in the repository. The key is defined parametrically, so parameters like the keychain height and...
This page posted by Drew Wagner
One way in which most digital pianos are thoroughly deficient compared to their analog counterparts is in the quality of the pedals provided. For example, for the...
Here are more pictures of the little pedal box I built, along with the schematics. CORRECTIONS: In the schematic I forgot to draw the ceramic bypass cap that one customarily throws across the rails...
88 keys
1 reflective object sensor per key producing 88 analog signals.
16 * 6 = 96 = 88 + 8 extra analog inputs for sliders and knobs.
A single controller board has a controller.
Six MUX boards...
General Description
The most likely candidates for optical keyswitches are called reflective object detectors. They include a photo-diode and an infrared LED embedded in IR transmissive resin, and...
Ken, put your idea for a keyboard up here!
The main advantage of using a PC for audio is that it can handle very large samples, especially if you have multiple gigs of RAM. There are two main routes for this:
Use a stand alone software...
/*
* MIDI Pedal box by Drew Wagner. Public Domain. Have fun!
* Sorry it's a bit unpolished; I just wanted to get it up online before moving
* on to other projects.
*/
#define...
The DIY Keyboard Project diykeyboard.org is an open hardware development project with the goal of making all of the CAD files, microcontroller code, etc… necessary for a hobbyist to build a...
A Janko keyboard using cherry keyswitches and AVR uc's youtube video
Ken Rushton has been working on Janko-like MIDI Keyboard retrofits
Paul Hirsh has STL files for a chromatic adaptation of the...
Just about the only advantage of rubber membrane key switches is that they are very inexpensive to manufacture. They don't seem to result in particularly accurate velocity measurements, and they...
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A sound module converts the information from the keyboard's sensors into an (analog or digital) audio signal. Building a good sound module is very non-trivial; indeed there is an entire industry...
example menu
example item 1
example item 2
contact
Ken Rushton advocates a 6 row Janko layout modified so that the top three rows are shifted by an octave, similar to a double manual piano.
Other enhancements to the Janko layout are possible. These...
Ever wanted to build your own digital piano/MIDI Keyboard/Synthesizer? Well, you're in the right place. The DIY Keyboard open source hardware project aims to enable hobbyists to build their own...
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A Wiki ([ˈwiː.kiː] <wee-kee> or [ˈwɪ.kiː] <wick-ey>) is a type of website that allows users to add, remove, or otherwise edit...
Introduction
After buying my Yamaha P85 digital piano, I was not satisfied by any of the commercial pedals available. You can buy high quality single pedals (i.e. the Yamaha FC-3), and you can buy...
