MobiFlight Community Support

Hi, I have an 8 position 2 channel enocder that I want to use for my transponder. I chose the 8 position encoder so I would get a full rotation (0-7). This is the item I have:

http://www.mouser.com/ProductDetail/Grayhill/25LB45-Q

When I wire it up and program it with Event ID, I only get a change in the number every four clicks in either direction. Am I doing something wrong?, or do I have the wrong item to do what I want it to do?
thanks, Dave

Hi Dave,

that is normal. Look into your linked Data sheet, first page, right side "Quadrature 2-Bit Code 1/4 Cycle per Detent".
1/4 cycle per detent means one event all 4 detents. The last note at the bottom is your key: "Code repeats every 4 positions".

Ugh. I missed that. Thanks Stephan.

HI. We talk about this some time ago that there is a little problem in a Full realistic Transponder building.

In FSUIPC there is a missing part to SET a single position of the 4 Transponder numbers.... You can Increase and Decrease it... But you can not SET it with a Event.
Additional there is no way to Write a halfbyte directly with mobiflight.... So it is not possible here too ( Only with own scripting maby or in a future version i just plan at the moment.)

Result... We have to work with the Increase/Decrease Logic finaly.... Whatever with a Encoder or 2 Buttons for +/- .

With encoders it is not possible to have a Realistic switch position corespondening to the shown number in Display.... SO it is normaly not need to use a 8 Detent Rotary here.
This would only be needed for a "rotary switch" ... here with 8 Positions (45 degrees) we could directly SET a Number for every postition. BUT AGAIN.... This is alredy not possible with curent technics in the software (Mobi and/or FSUIPC).
So if the Encoder is not used for fixed position/Number logic it is not needed that it have exact 8 detents !


I Would recommend.... Simply use a standard encoder with whatever number of detents.... Thats the easy solution.