Opencockpits USB servo card

[fordgt40]

Bill

Well done, on to the next challenge then

David

[Rockeyes]

The next challenge !

Whilst I work on my simultaneous equations for calibrating the instrument (Baron58 link), I am wondering how to reverse the servo rotation through the software. The problem, due to the servo fit and gearing used the roll is working in the wrong direction

[fordgt40]

Offhand, I would reverse the values on the servo sioc command line for posL to 1023 and posR to 1

Stand to be corrected though Watch the servo for stall, though I doubt this would happen as I think that the servo does not know left from right - it is just the range of values

[Rockeyes]

Sorry for the late reply, this volcanic cloud amongst other things has been keeping me busy.

I also thought that reversing the values might do it, but unfortunately not.

As the servo is so small, a modification to its standard direction of travel by swapping over its motor and pot wires was not an option. I've settled for an in-line servo reverser from the local model shop which at the moment seems to be working fine, although an expensive solution.

[fordgt40]

Bill

Glad you got it fixed! Next time perhaps try tinkering with the code - it should be cheaper. In the programme calcs,
try multiplying with negative numbers or take away the answer from 1024. In the latter case a previous value of 1024 becomes 0 and vice versa. There is a simple coding answer, but you need to get your feet wet

David

[737NUT]

Bill

Glad you got it fixed! Next time perhaps try tinkering with the code - it should be cheaper. In the programme calcs,
try multiplying with negative numbers or take away the answer from 1024. In the latter case a previous value of 1024 becomes 0 and vice versa. There is a simple coding answer, but you need to get your feet wet

David

Yes, you are correct. Simple math in the code for sioc, But he isn't ready for that step yet. Baby steps.

[Rockeyes]

So there is the gauntlet being firmly laid down

[fordgt40]

No Gain without Pain

[Rockeyes]

[fordgt40]

Bill

Take a bow and open a can of beer! Well done sir, it looks great - now onto greater things

David