Sorry been busy today and just saw this.
I bought a 2nd hand touch screen (3M Microtouch). A part from being
cheap, $25 AUD I figured it would be a fairly rugged piece of kit (very
little use). So it's only 17" but with the lack of space in my work area
it fits right in. Touch a little bit of fiddling to calibrate but I
found a great python3 base utility that worked wonders.
On 2/6/21 5:14 pm, John Dammeyer wrote:
Hi Gregg,
My observation is that in the last decade or so human factors engineering has
taken a back seat to getting a product out the door. Possibly with the idea
that it will be out of date in a couple of years so why bother.
Way back when I was in University it was the Arts Department at the University
of Alberta that introduced a Industrial Design stream for students to take
which was exactly about that. How big should buttons be? What sort of
positions should they be in and where. I was friends with a guy that was doing
that while I was taking what is now called Computer Engineering but then was
Computing Science with a few EE courses. Never forgot the comments he made
about design.
Lately it appears to take a back seat.
In essence perhaps that's what my question about touch screens is all about.
John
-----Original Message-----
From: Gregg Eshelman via Emc-users [mailto:emc-users@lists.sourceforge.net]
Sent: June-01-21 11:55 PM
To: Enhanced Machine Controller (EMC)
Cc: Gregg Eshelman
Subject: Re: [Emc-users] Touch screen for LinuxCNC
I always liked the rotary click wheel on many CRT monitors. Nice big wheel with
an offset dimple. Put fingertip in dimple and push to
get the menu, spin to highlight the configuration option then push. Spin again
to select (for example) vertical position then push and
spin to move the raster up or down. No slower (for me it was faster) than a mouse
interface with "spin" controls that scroll a list or
change a number. Only took me a few seconds to have a CRT's image all tweaked.
That's why people lamented the loss of the
clickwheel on iPods. It was FAST, easy to use, and didn't need eyes on it to be
able to use it.
My current LCD has five buttons on the back. Only the bottom one (on/off) has a
tiny bump. The other four are ??? and after the
menu is brought up, their positions don't align with the order of the menu
selections so one is literally poking around blindly trying to
find what does what. Even a row of clearly labeled buttons on the front of a
monitor was slower than a click wheel. If TV and monitor
designers want a "blind poking" physical interface tucked around on the back
side, they should bring back the click wheel. I have a
couple of Samsung TVs that have, of all things, a tiny joystick *and* some
buttons on the back. Now that is a crazy thing.
On Tuesday, June 1, 2021, 7:38:13 PM MDT, John Dammeyer
<jo...@autoartisans.com> wrote:
Personally I like the tactile feedback of a button that moves.� But moving
from buttons over to a mouse to then select entries is
tedious so I can see either a number of buttons or a touch screen for that sort
of thing.
For the same reason I really detest those interfaces based on Arduino's that,
due to limited I/O use a rotary knob and button to select
from all sorts of menus.� Or worse test enter each digit one at a time using
the rotary knob.
Shudder!!!!
Way back HP had the right idea with what they called soft keys.� A row of
mechanical buttons along the edges of the screen to select
options displayed beside the button.� My Tek scope has those and the stupid
rotary knobs.� Invariably since they have two of those I
tend to choose the wrong one first.
But to design such a user screen for LinuxCNC implies you also have to provide
the buttons (and maybe a knob).� Easy to do with
CANopen or ModBus or if you have one of the high i/o count MESA boards but then
you are also running a bundle of wires up rather
than a network cable.
Thanks for the feedback.
John Dammeyer
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