wafer101
Member level 4
mkc midi controller
I would like to extend the capability of this MKC from the basic 64 key controller
(there is also a 128 key available) to a full 8 octave keyboard...
I know somhow we have to add more 3x8 decoder (74LS138) as to make a grid to cover all 8 octave (full piano keyboard) --- this is the easy part.
the other thing to do is to reprogram the PIC16F84 to include it all
take a look here:
http://www.geocities.com/JDPetkov/Hardware/midikeyb/midikeyb.htm
there you can find a downloadable 64 key ver. the author is not supplying the asm code though but just a compiled one. Haveing the code would be much easyer to expand this project.....
any help...... any idea how to go about?
wafer101
I would like to extend the capability of this MKC from the basic 64 key controller
(there is also a 128 key available) to a full 8 octave keyboard...
I know somhow we have to add more 3x8 decoder (74LS138) as to make a grid to cover all 8 octave (full piano keyboard) --- this is the easy part.
the other thing to do is to reprogram the PIC16F84 to include it all
take a look here:
http://www.geocities.com/JDPetkov/Hardware/midikeyb/midikeyb.htm
there you can find a downloadable 64 key ver. the author is not supplying the asm code though but just a compiled one. Haveing the code would be much easyer to expand this project.....
any help...... any idea how to go about?
wafer101