MIDIbox

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====== MidiBoxKB ======

Since Thorsten released a 8*8 scan matrix driver,

it's easily possible to use a C64 Keyboard with MIOS.

{{kb:keyboard_standard.gif}}\\

http://www.midibox.org/forum/index.php?topic=6505.msg40727#msg40727

The C example can be downloaded here :\\

  * http://ucapps.de/mios/sm_example2_v1.zip\\
  * http://ucapps.de/mios/sm_example1_v2.zip\\


First, i did this pcb (on a breadboard) :\\

{{kb:sm_shematics2.gif}}\\


===== The program =====

Use that sample program to test your keyboard connection : \\
  * {{kb:c64-keyboard-test-v2.zip}} (sources are included)

This small app display the key number, the corresponding Character, the midi note number associated to that key,
and play a note on channel 1.
The keyboard mapping can be found in the "variables.h" file.
More than a test, it's a good base for your own programs.

A bigger and more interesting program (a funky sequencer) is still on developpement... stay tuned !



===== It can look like this =====
{{youtube>small:OZGhumzoR70}}\\

{{kb:c64-board.jpg}}\\
\\
Please write me if you have questions. \\

Get various files and details related at http://jambonbill.free.fr or http://jambonbill.free.fr/?rep=./midibox-kb\\
\\
 --- //[[jambonbill@yahoo.fr|bill]] 2006/05/02 05:06//


===== More photos =====


{{kb:mbkb-01.jpg}}\\
{{kb:mbkb-02.jpg}}\\
\\


====== Bugs ======


Atm, some key combination lead to errors :\\
\\
The C64 keyboard pcb do not have signal leds.
So, when you try to play some chords (no worry, only a few of them) the scan matrix do not read the keyboard correctly.
I guess that problem exist on the real C64, but is not a problem because there's no need to press 4 keys at the same time, in a normal way of use.
Most or all 3 notes chords can be played with no problem.\\



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  I dont know why the formating of this page is all fucked up :s
MIDIbox

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