[sdiy] Keyboard Control

[harrybissell]

Hi Thomas

Higher pitches (to the right side of the keyboard) get higher
voltages...
so the current source should go on the highest note side...

H^) harry

Thomas Holley wrote:

>     I have a rather fundamental question. In a keyboard controller
> resistor ladder, does the high voltage side go to high pitch key or
> the low pitch key. I have been tinkering with an old keyboard and
> soldered up a 100 ohm resistor between each key for a nice ladder when
> it finally dawned on me that I had not a clue which side to put the
> current source on and which one to ground. Thanks for your help Thomas