FMS Interface
USB Joystick Interface
PIC Serial Interface
Gameport Interface
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R/C Joystick Interface
This circuit is an interface between a radio control transmitter and a computer gameport. It connects between the transmitter trainer jack and a computer game port, 15 pin. The interface reads the PPM data from your transmitter and converts the pulse widths to numbers. It then sends those numbers to 2 dual digital pots. The interface connects to a computer game port which will read the value of the 4, 100k digital pots. Aileron, Elevator, Rudder, and Throttle control the 4 axes. Channels 5 and 6 control the Fire Buttons.
Note: Due to the fact that no physical Fire Button is installed on the interface this unit will not work with the following conditions, Windows 95, 98, ME, and also if using a 4 channel transmitter. If using a 5 or more channel transmitter it will work fine. Windows XP, 2000, will work ok with 4 to 10 channel transmitters.
Interface Features
- Works with all Windows Versions, see note above.
- 4 axis, 2 Fire Buttons.
- Will handle 4 to 10 channel transmitters.
- Full 8 bit range used for PPM width
- Digital Pots are updated every PPM frame, approximately 50 times a second.
- Auto Powerdown after 60 seconds without PPM signal.
- Auto Powerup when PPM signal returns.
- Works with either Futaba, Hitec, JR. Just change transmitter connector.
- Very easy to setup.
- Compact size.
The PIC code described here does not work with Airtronics but I do have a working hex code for an interface that works with all brands including Airtronics. If interested you can a request it by email.
Interface - Simulator Compatibility
