[PSUBS-MAILIST] instrument and environment display

[Steve McQueen via Personal_Submersibles]

Jon, very cool. What application creates the new graphics?
Steve

On Mon, Jul 13, 2015 at 3:09 PM, Jon Wallace via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

>
> I am going to move to complete computerized display of sensors (depth,
> temp, compass, etc).  My original plan was to feed a bank of 7-segment LCD
> displays (see attached image) but the cost of moving to a tablet is going
> to be less than double and the tradeoff of a superior display is worth that
> extra cost.  If I can find a reasonable priced 10 inch (or so) touchscreen
> display I could even use a raspberry-pi instead of a tablet.  I may try
> this first since I already have a PI.
>
> I've got a prototype for the graphics available at
> https://www.youtube.com/watch?v=t9X5iX5pRjM which includes depth,
> vertical rate, pitch, roll, and compass heading modeled after an aircraft
> multi-function display (MFD).  Note that in the demo code the depth and
> vrate are not synchronized, nor are the green up/down indicators associated
> with VRATE.  I've set a yellow alert at 500 foot depth and a red alarm at
> 600 feet depth.  I've also set a yellow alert at 60 feet-per-minute
> vertical rate and a red alarm at 90 feet-per-minute vertical rate.
> Remember Matilda?  This is where her sultry voice will gently reinforce the
> prospect of impending doom if the visual alarms are missed (or ignored).
>
> I will be adding cabin/water temperature, humidity, cabin pressure, O2 and
> CO2 levels and a clock to the display as soon as I can figure out what I
> want them to look like.  Might be simple dials, might be graduated
> bars...we'll see.
>
> Jon
>
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