Re: [PSUBS-MAILIST] Controller/Display

[Jon Wallace <jonw@psubs.org>]

Hi Hugh,

Vertical speed is calculated in software by comparing depth over time.  
I'm using signed display (+ and -) to indicate direction, a positive 
number indicates downward motion and negative number indicates upward 
motion.  I felt this was important in cases of night diving where there 
is no reference point in mid-water although just watching an analog dial 
motion would also give an idea of how fast you were ascending.  But it 
only takes about ten lines of software code, so it's cheap, so why not 
just add it was my philosophy.

Jon


On 4/13/2012 5:44 PM, Hugh Fulton wrote:
> Hi Jon,  What are you using for rate of climb/descent. Calculations from
> pressure sensors or an instrument?  Chs, Hugh




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