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Subject: Re: Joystick controllers: Was: Controllers for modulars

From: JWBarlow@...
Date: 1999-11-30

In a message dated 11/29/99 9:50:06 PM, jlarryh@... writes:

>Or a voltage adder to the final joystick output, ala MOTM
>fashion on its CV voltage adding inputs. Come to think of it, the range
>pot could also be done that same way and it would not have to be a double
>pot. (stooge thinking aloud here waiting for the guys that REALLY know
>to
>correct me).


This is exactly what I've been planing on doing: two single pots at the wiper
of each axis, one as a divider and one as an offset. But also having a switch
for each axis to allow the input of signals instead of +V and -V on each side
to allow it to be used for crossfading.


>So controls are: X-axis range, X-axis trim, Y-axis range, Y-axis trim.


I'd change range to scale, and trim to offset.


>I would want some way to reverse the output voltage. You could use a DPDT
>switch to reverse the DC supply voltage to the joystick resistor. However,
>what would REALLY be cool was to have opposite voltages available for each
>axis at the same time. So, have the joystick voltage drive an inverting
>amp and have 4 output jack X volts +, X volts -, Y volts +, and Y volts


I'll have to think about this.


>Function # 2: Generate a gate a trigger when depressed.


Again, this is what I was thinking of since some examples off hand are gate
an EG, clocking a S/H (with the input of the S/H from one axis of the
joystick), and using it with a flip flop to switch between inputs with the
MOTM 700.

JB