Voltage input "out of range"

[MCRider]

Hi Dynon,

The position information for aileron trim and flaps in my aircraft is not coming from a resistive sensor but a voltage generated by separate circuits (the potentiometers are used by the respective controllers). With a "C type" input and a modified sensor definition it works fine - except when the trim or flap controllers are not powered. In this case the indicator shows the maximum value - although the voltage is "out of range" (i.e. beyond the max and min calibration values - I think it is 0 volts for trim and 5 volts for flaps). Is it possible to let the trim/flap indicator show an error condition in this case (green triangles disappearing or - better - "red X" showing up)?

If not this is my feature request: "Show a red X if an analog input with user calibration is reading a voltage beyond the calibrated values (with a little safety margin to avoid false alarms)".

Best wishes for 2014 - and please keep on improving a good product!

Regards
MCRider

 

[dynonsupport]

Currently, we do not support "X" displays on position sensors.

If your trim goes to 0V as part of a real calibrated value, and also goes to 0V when unpowered, how would we detect this condition? The out of range checking can only work if an error value is outside of the normal set of values, and it sounds like your sensors use up the whole 0-5V range.

 

[MCRider]

I just looked it up in my config file to be 100% sure: The minimum values are well above 0V (1.3 and 0.7). Whenever you have to generate an analog signal with some sort of converter (in my case: a little microcontroller circuit roughly described here dynonavionics.com/cgi-bin/yabb2/YaBB.pl?num=1375244521 and an op amp working as voltage follower) you can easily manage to keep the signal in a range slightly smaller than 0 to 5V.