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Re: [Paparazzi-devel] External Voltage Sensor for Battery Warnings

From: Felix Ruess
Subject: Re: [Paparazzi-devel] External Voltage Sensor for Battery Warnings
Date: Wed, 18 Jan 2012 23:55:13 +0100

Hi Balazs,

you can add <define name="VoltageOfAdc(adc)" value="(0.0246*adc)"/>
(with the ratio you need of course to your airframe file (e.g. BAT
Then you also need to change the ADC channel that is used to read the
voltage, e.g. <define name="ADC_CHANNEL_VSUPPLY" value="ADC_4"/>. You
have to add that to the ap firmware section, so it will be a global
define and just one in the generated airframe file.

To not get errors because ADC_CHANNEL_VSUPPLY gets redefined, pull
again from master...

Cheers, Felix

On Sun, Jan 15, 2012 at 7:52 PM,  <address@hidden> wrote:
> Dear Developer,
> we are using a TWOG in an EasyGlider for two years, and we are very
> satisfied with it and very pleased that you make it accessible for all the
> world.
> We would ask you for some support now. We changed the airframe to a
> Trainer 60 with a 6cell 5000mAh LiPo. Because of the higher accu voltage
> (22.2V) we had to apply a switching power supply to provide power for
> TWOG. We installed a Sparkfun Current Sensor to the ESC, too. We
> configured successfully the ADC channels, and now we are able to display
> the actual motor current and battery voltage on the GCS with a papget.
> Unfortunately we didn't find the way, how to use the ADC channel of
> battery voltage for generating the warnings (LOW, CRITICAL, CATASTROPHIC
> BATT. LEVEL). Is there any way to do it without to change the code
> directly?
> Thank you in advance
>  Balazs
> Budapest University of Technology and Economics
> Department of Aircraft and Ships
> _______________________________________________
> Paparazzi-devel mailing list
> address@hidden

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