brydling Posted February 26, 2011 Posted February 26, 2011 At NovelAir we have long dreamed about making our own Digital-to-Synchro-converter. I have finally made a prototype D/S-converter and tested it with success! A D/S-converter outputs synchro-signals, which is a set of signals corresponding to the angle to which an instrument should point. Synchros are commonly used in aircraft instrumentation due to the simplicity of transmitting an angle from one place to another when using them. A video of the successful test can be seen at . This is a pretty simple electronics project for anyone who has original synchro-based instruments and want to control them from the computer. 400 Hz power supply required. /Niclas 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.
Succellus Posted February 26, 2011 Posted February 26, 2011 nice this could be interesting if coupled with the right instrument and if simulation efectively give a signal to be read HaF 922, Asus rampage extreme 3 gene, I7 950 with Noctua D14, MSI gtx 460 hawk, G skill 1600 8gb, 1.5 giga samsung HD. Track IR 5, Hall sensed Cougar, Hall sensed TM RCS TM Warthog(2283), TM MFD, Saitek pro combat rudder, Cougar MFD.
brydling Posted February 26, 2011 Author Posted February 26, 2011 (edited) The instruments that use synchros are typically instruments dealing with angles, for example attitude indicators and heading indicators. You put one synchro on for example the roll axis in the gyro platform, and one synchro on the roll axis in the attitude indicator. Connect the two synchros together and the attitude indicator will follow the gyro automatically. With this solution you replace the transmitting synchro with a D/S-converter. However, many types of instruments are modified to be synchro-driven for simulator use, so instruments showing angles are not the only synchro-based instruments out there. The one in the movie for example is a brake pressure-indicator from a real AJ37 Viggen simulator. If it would have been a "real flying" instrument, it would probably not have been able to move outside of the scale. It would probably also be purely mechanical. Edit: I have to correct some facts here. First, I'm not sure that the instrument in the movie belongs to the Viggen. I just checked the pilots manual and it doesn't look the same. It could be some other Swedish Airforce aircraft (except for the Draken, I know what that one looks like). Second, both the brake pressure indicator in the J35 Draken and the AJ37 Viggen actually are synchro-driven in the real flying version too, so that one in the movie might be that as well. However the yellow chassis indicates that this particular one has been used in a simulator. Seems odd to sense brake pressure with a synchro, but since the receiving synchro (in the indicator) is driven by currents and not by voltage the signals are very robust. Edited February 26, 2011 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.
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