The schematic for the gaming / racing wheel
interconnection is given above. Click on
it to see an enlarged image. The different
units are shown using block representation.
The explanation of the schematic is as follows:
The conn: circuit is a
PCB on which you can perform the interconnection.
You can either directly solder wires and
insulate them, or use a PCB instead. The
PCB or interconnections are better to be
housed within the gear box.
The Steering wheel is shown towards the
bottom. The green colored rectangle at the
center of the gaming / racing wheel represents
the horn-switch. The green wired cable coming
to it is the ground. The horn is connected
to the gameport switch S3 (pin 10)
using the yellow colored cable.
The grey colored rectangle at the end of
the steering wheel's axis is the potentiometer.
A +5V (pin 1) cable and
the cable connecting to X1 (pin
3) runs into it. The steering unit's
wires can be fed into the gear box and interconnected
in the PCB housed there. It is always better
to use connectors to connect wires between
units of the gaming / racing wheel, since
each unit could be individually disconnected
and moved.
The Pedals are shown to the bottom right.
+5V (pin 1) and +5V
(pin 9) are fed into the three
potentiometers of the gaming / racing wheel.
The varied signals from the potentiometers
gets returned to Y1 (pin 6)
, X2 (pin 11) and Y2
(pin 13) as shown in the diagram.
The gear box of the gaming / racing wheel
houses very simple connections. A ground
signal is fed to the gear's metallic shaft.
The metal contacts placed at the up and
down positions are connected to the switches
S1 (pin 2) and S2
(pin 7) respectively. If the gear
knob you used was a joystick's handle and
it houses a button, you can connect it to
a Gnd and S4 (pin
14) as shown in the diagram, in
order to use that button as hand-brake.
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