Rudder Information including Pinouts

by
Albert S Crane


The rudder pedals I made for Bob are similar in design to the ones ThrustMaster makes. I made the base of .060' ALUMINUM 12" x 15" with .75" fold over on the edges. The rudder pedal arms (RR) were attached to two cross members (XX) pivoted in the center (O). They were made of Al channel with .5" sides and 2" wide. I used .25" bolts for center pivots with 1" nylon washers between bearing surfaces. One really needs a good bearing here at O and O. To make up for that I mounted two closet door rollers under each rudder to bear the foot weight. On top of the pedal cross members I mounted some 30 degree foot rests.

 ______________________
| XXXXXXXXXXOXXXXXXXXX |
| RR                RR |
| RR                RR |
| RR        P       RR |
| RR        G       RR |
| XXXXXXXXSSOXXXXXXXXX |
|______________________|

In the corners (R&X) were pivots consisting of #10 screws with nylon bushings and a nylon bearing surface washer. P&G represent a step up gear with 1:3 ratio to drive the 100k ohm pot nearly full travel. The return to zero spring was located at SS is a little tricky. I used a big safety pin type spring made with 0.060 dia spring steel with 4" legs. The cross member xx was slotted on the bottom to allow two stop posts to come up from the base. I suggest you look at ThrustMaster's to see how they implemented a coil spring with straight legs straight in conjunction with the stops.

I had access to aluminum, shears and break. I'm sure one could make this out of wood also.

Pin-out details:


PIN	JOYSTICK	FUNCTION
1	A		+5V FOR X&Y AXIS
2	A		BUTTON INPUT
3	A		X-AXIS INPUT
4	A		GND (SHIELD) FOR BUTTON
5	B		GND (SHIELD) FOR BUTTON
6	A		Y-AXIS INPUT
7	A		BUTTON INPUT
8	GND		SHIELD
9	B		+5V FOR X-Y AXIS (RUDDER POT)
10	B		BUTTON INPUT
11	B		X-AXIS INPUT (RUDDER POT WIPER)
12
13	B		Y-AXIS INPUT
14	B		BUTTON INPUT
15	
You can see that the rudder is used as joystick B and uses only pins 9 (Or 1) and 11. Shilded cable is recommended to reduce stray noise pick-up. A Y connector can be made to plug into the computer to pass the main signals to the joys stick and pick up the rudder cable.

Sorry I don't have more complete plans. Hope this helps.


Return to Build Your Own Cockpit