> On Fri, 2009-04-17 at 01:06 -0700, Michael Jones wrote:
> ... snip
>> I've used the first script in the knowledgebase as a initial attempt,
>> but am having a slight problem.  When I let go of the stick on the pad
>> the axis keeps going.. UHOH! ;-)
>>
>> I've looked at the other scripts in the knowledgebase and noticed a
>> setting called a "deadzone".  Would this solve my problem?
>>
>> Any useful tips?
>>
>> Thanks
>>
>> - Micahel
>
> I seem to recall that there was either a loadrt parameter or component
> parameter that let you set the jog mode to either follow the commanded
> position or follow the input activity. In other words, when the joystick
> is held the position commands build up, when you release the joystick,
> EMC2 continues to try to move to the commanded position causing a
> run-on. In the other mode, when you release the joystick, the motion
> stops at the release and cancels the position command.

What you are reffering to is valid for MPGs, not for joysticks.
(there counts are remembered, and if you stop spinning, the machine might 
still move to get to the count you intended).

For joysticks you need to see what each axis outputs.
There are joysticks which output (-value .. 0 .. value), and others that go 
(0 .. value).
The first kind you can easily connecto to halui jogging with speed 
presetting. (then based on how far you move the stick, halui will command 
the speed of the jog move).
Deadband is used so the axis doesn't slowly creep away if your joystick 
doesn't output quite 0 when in the neutral position.

Before you start hooking the joystick up to halui for jogging, I would first 
load the joystick component (just like in the HAL file), then use a halmeter 
and look for the values it outputs for +max, neutral and -max. Also see how 
linear the values are.
Based on these numbers, we'll try to suggest you the best way to hook it up.

Regards,
Alex


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