Am 07.03.2012 18:14, schrieb Roberto Inzerillo: > Hi everybody, > it's a few weeks I'm dealing with a few analog to digital converters, I'm > using them to convert external analog signals and use them as inputs to > FlightGear controls. > > I'm wondering which resolution is best when dealing with properties of type > double. My analog values get converted to digital ones before being fed to > FGFS. I see FGFS likes doubles, that's ok, I am converting those digital > inputs to appropriate double values. > > I'm talking about stuff like /controls/flight/aileron or > /controls/engines/enigne/throttle. > > I'll try and be as precise as possible with my hardware so that I get > reliable/stable/consistent readings to feed to FGFS, I'm getting closer to > make rid of any unwanted highres noise, still I am going to deal with 8, 10 > or 12-bit resolution digital values. That may be too much and useless. I'd > like to crop them down to more reasonable resolution if possible/usefull. > > I see FGFS keyboard/mouse interface uses 7/8bit resolution. I'd like to know > if someone can help me figuring out what input resolution should I use for: > /controls/flight/aileron > /controls/flight/aileron-trim > /controls/flight/elevator > /controls/flight/elevator-trim > /controls/flight/rudder > /controls/flight/rudder-trim > /controls/gear/brake-parking > /controls/engines/enigne/throttle > /controls/engines/engine/cowl-flaps-norm > /controls/engines/engine/propeller-pitch > > I'd prefer keep using 8bit resolution (cheap and reliable solution). I'm open > to use 10bit resolution if usefull. I'm willing to go with a 12bit resolution > input only if _really_ needed. That's how I see it now. > > I don't want to discard usefull information, nor I want to use useless > over-precise values. I'm looking for a reasonable compromise here, but I > don't know the internals of FGFS. > > Cheers, > Roberto > > Hi Roberto,
for my poor mens procedure trainer, I use 10bit for the flight controls and found 8bit by far to coarse. Currently I use 8bits for the toe breaks and the engine controls and see some jitter at times. I'll use 10bit when I update the firmware the next time. Parking brake is just a on/off flag (1bit). HTH Torsten ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
