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Digital-To-Synchro converter for interfacing real aircraft indicators


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Posted

All the instruments that I want to use synchros on are for the most part Malwin simulator instruments. I like Mike's design, but unless I want to re-draw the whole board, I get to be obscenely over-charged by ExpressPCB to have them make the boards. I've found a source of both 26V and 115V static inverters - I'm just waiting to find out how much they'll cost me. :)

 

tnx.

 

g.

Proud owner of 80-0007.

http://www.f15sim.com - The only one of her kind.

Posted (edited)

Simulator intstruments are perfect, then you have a good chance it will work without too much struggle. Do you know if they have electronics built-in or do they just consist of a synchro control transformer and an AC-motor for each axis?

 

If the inverters are too expensive I'm sure you can build your own on a breadboard. I don't think there are many parts involved.

Edited by brydling

Digital-to-Synchro converter for interfacing real aircraft instruments - Thread

 

Check out my High Input Count Joystick Controller for cockpit builders, with support for 248 switches, 2 POV hats and 13 analog axes. Over 60 units sold. - B256A13

 

www.novelair.com - The world's most realistic flight simulators of the J35J Draken and the AJS37 Viggen.

Posted

That sounds odd. If you can get your hands on some technical documentation or open them and take some photos of the components inside I'm sure we can figure out how to bring them to life :)

Digital-to-Synchro converter for interfacing real aircraft instruments - Thread

 

Check out my High Input Count Joystick Controller for cockpit builders, with support for 248 switches, 2 POV hats and 13 analog axes. Over 60 units sold. - B256A13

 

www.novelair.com - The world's most realistic flight simulators of the J35J Draken and the AJS37 Viggen.

Posted (edited)

The ADI should be straightforward as you say :-) What I think you should worry most about is the standby attitude indicator.

 

Why is there a synchro and a resolver for each axis? I think that is very odd since a synchro and a resolver is basically the same thing with a different number of phases. Don't you mean a synchro and a 2-phase AC-motor?

Edited by brydling

Digital-to-Synchro converter for interfacing real aircraft instruments - Thread

 

Check out my High Input Count Joystick Controller for cockpit builders, with support for 248 switches, 2 POV hats and 13 analog axes. Over 60 units sold. - B256A13

 

www.novelair.com - The world's most realistic flight simulators of the J35J Draken and the AJS37 Viggen.

Posted

Ok. Just give me a shout if you want any help when you have the necessary equipment :)

Digital-to-Synchro converter for interfacing real aircraft instruments - Thread

 

Check out my High Input Count Joystick Controller for cockpit builders, with support for 248 switches, 2 POV hats and 13 analog axes. Over 60 units sold. - B256A13

 

www.novelair.com - The world's most realistic flight simulators of the J35J Draken and the AJS37 Viggen.

Posted

Will do. Right now I'm in the middle of the right side console wiring job. Once the side console wiring harnesses are complete, I'll worry about the instrument panel. :)

 

g.

Proud owner of 80-0007.

http://www.f15sim.com - The only one of her kind.

  • 3 months later...
  • 3 months later...
Posted

Finally got my boards hooked up and running my ARU/2B ADI. Worked well first time!

 

The one question I have is when I set the angle to 0 it is actually -60. This is trivial to offset in software, but does it mean I have something wired wrong?

 

The Milspec on my ADI lists the input to the syncros as x, y and z not s1, s2 and s3. I just wired s1-x, s2-y and s3-z. Would rotating those change anything?

Posted

That's great news! :)

 

By changing the position of the wires you can move both the zero position and the rotation direction. Many indicators don't actually have the electrical zero at the visual zero position, so an offset will always be needed in software for these. But in Helios it is possible to make whatever mathematical manipulation of the values you want by using Lua if I have understood correctly?

Digital-to-Synchro converter for interfacing real aircraft instruments - Thread

 

Check out my High Input Count Joystick Controller for cockpit builders, with support for 248 switches, 2 POV hats and 13 analog axes. Over 60 units sold. - B256A13

 

www.novelair.com - The world's most realistic flight simulators of the J35J Draken and the AJS37 Viggen.

Posted

Correct and I've already accounted for it there. I'll need to check the mil spec at where the electrical zero is to see if I've wited properly.

  • 5 months later...
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