[Amps] Front Panel Express Help

[Jim W7RY]

Got it to work... The trick is to NOT make segment 2 zero (0). If you do, 
then the tool will not generate a file.... That would have been handy to 
know.. :(

73
Jim W7RY




-----Original Message----- 
From: Jim W7RY
Sent: Wednesday, April 09, 2014 10:31 PM
To: Paul Christensen ; amps at contesting.com
Subject: Re: [Amps] Front Panel Express Help

I don’t seem to be able to create a file with the Java application. Not sure
why... The instructions seem pretty vague. Could it be a java issue?

Ideas?
Thanks
73
Jim W7RY


-----Original Message----- 
From: Paul Christensen
Sent: Wednesday, April 09, 2014 6:49 AM
To: amps at contesting.com
Subject: Re: [Amps] Front Panel Express Help

Jim,

That works slick.  I just created a 150 degree scale arc with six band index
ticks.   After importing, the Reference Point menu should be changed  to
"Origin of HPGL File."  That way the image cross-hair center can be placed
directly over the switch hole center and the scale lines will be perfectly
positioned with the switch.   The new file extension must read ".plt"

Once the scale is placed on the panel, optimizing the size can be done by
changing percentages.  Unless I'm mistaken, that's about the only editing
that can be done after creating the scale export.   So, there's some trial
and error involved that requires starting over in order to get it looking
right.

Paul, W9AC









-----Original Message----- 
From: MU 4CX250B
Sent: Wednesday, April 09, 2014 8:58 AM
To: Paul Christensen ; amps at contesting.com
Subject: Re: [Amps] Front Panel Express Help

There is a utility you can download from the front panel express
website for designing dials, arcs, and so forth.
Jim W8ZR

Sent from my iPhone

On Apr 9, 2014, at 5:52 AM, Paul Christensen <w9ac at arrl.net> wrote:

>> "Can anyone give me some pointers on creating a 150 degree arc label for 
>> a band switch for Front Panel Express? I have a radio switch 86 switch 
>> with 30 degree detents. 6 positions, 160-10 meters."
>
> If an actual arc is needed, you can select "Insert Curved Slot" from the 
> menu.  Then select the engraving width/depth (e.g., cutter 0.6mm).  The 
> slot can be rotated, expanded, degrees set, etc.
>
> To set up 30-degree index positions (and optionally with with engraved 
> lines radiating from center), you can use trig functions on Cartesian 
> coordinates. For all switches, I used the switch center hole as the 
> Cartesian origin. Once you decide on the distance to engrave from the 
> switch center -- and you already know the angle, then solve for (X, Y). 
> Take the computed X coordinate and add it to the the origin's X 
> coordinate.  Do the same computation for the Y coordinate.
>
> When recently solving this for a 2-position switch,  I wanted to take 
> advantage of the switch's locking tab and insert it into a blind hole on 
> the panel reverse side.  So that the position center center lined up 
> vertically, this meant that position 1 is 15 degrees left of vertical and 
> position 2 is 15 degrees right.  Instead of solving by using the actual 30 
> degree arc, it was easier to solve using 15 degrees.
>
> You're welcome to my panel file if you want to have a look.
>
> Paul, W9AC
>
>
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