First & Second Touch Implementations

[John]

For organ manuals with "second touch" switches, we can make two separate switch matrices and connect them to the MIDI CPU. In the diagram, one matrix (column) of switches is for "first touch", and the second identical matrix is for "second touch". It looks like this:



Detailed discussion of the approach above:

http://forum.highlyliquid.com/showthread.php?t=397

An alternative solution will become possible with the forthcoming version 1.3 firmware.

Some organs have existing wiring in place which makes it difficult to divide the first & second touch switches into separate matrices. So it may be easier to do something like this:



We can discuss the second approach in more detail when firmware 1.3 is available.

[stefanuk]

Would this work?

[John]

Originally Posted by stefanuk

Would this work?

Yes. This would work fine. The positions of the switches and diodes can be swapped, as long as the cathodes connect to the select lines and the anodes connect to the data lines.

[stefanuk]

All right! SO if nothing else works, i can always tear down and rebuild. I am looking into reprogramming MIDI using MidiOX, if it works I would not need to do any physical work. If it does not, this last schematic would work perfectly. If I could think of it 4 months ago, I would be playing this manual now... I don't necessarily feel so smart, but it all is a learning experience! Well, at least I did come up with it... Three months too late.

Happy Easter!