[NSRCA-discussion] Airborne voltmeter

[James Oddino]

I considered building something but in my old age I don't like to  
chase after the parts I need to build one.  Besides the eLogger does a  
lot more stuff so I ordered it with the display.  I'll probably leave  
both units in the plane.

Jim


On Aug 5, 2009, at 10:02 AM, Bob Richards wrote:

> Depends on what you mean by "light". I've used the eLogger from  
> Eagle Tree:
>
> http://www.eagletreesystems.com/MicroPower/micro.htm
>
> But, seeing as how this is pattern, this will probably put a lot of  
> planes over the weight limit. :-)  The nice thing about the elogger  
> is the data logging capability. With the external display, you can  
> program it to display information about the flight as well (min  
> voltage, max amps, mah consumed, etc).
>
> OTOH, a simple op-amp circuit and a bar graph LED display might do  
> what you need.
>
> Bob R.
>
>
> --- On Wed, 8/5/09, James Oddino <joddino at socal.rr.com> wrote:
>
> From: James Oddino <joddino at socal.rr.com>
> Subject: [NSRCA-discussion] Airborne voltmeter
> To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>
> Date: Wednesday, August 5, 2009, 1:28 PM
>
>
> Has anyone run across a small, light voltmeter that could be left in  
> the plane wired across the input to the ESC?  The idea is to make  
> sure your pack is fully charged when you plug it into the ESC.  It  
> would need a range from 30 to 42 volts and needs a resolution of at  
> least one volt.  I want to see a difference between 38 and 41 volts.
>
> Jim
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