Easily Add Toggle
Switches to Your . . . .
Microsoft's Flight Simulator
FS2000, FS2002 & FS2004
Using a device called a USB Hub (that can be
purchased On-Line, Best Buy, Office Max, Office Depot ect.), you can
connect an unlimited number of Interfaces to your Computer (limitations
on the actual number of Interface devices depends on your computer
Manufacturer). Below is a schematic on how to connect up to 10 Spring
Return buttons to a USB/10 Button Interface using a standard 15 pin FEMALE Connector
(MIDI Cable will work just fine). The internal circuitry in the
Interface includes what is called Switch De-Bouncing. De-Bouncing is a
term to discribe the action (internal to a switch) when the terminals
make multiple connections when the switch is pushed once. If de-bouncing
is not taken into consideration, your Flight Simulator will act upon
these switch closures.
Model #505 No Longer
Connecting a Single Pole Double Throw (SPDT) Toggle Switch to the
Figure 1 shows a rather simple circuit that uses a Toggle
switch, 2200uf capacitor and a 5 volt DC relay. Figure 2, you will find
a simple Power Supply fashioned from inexpensive parts that can be
purchased from a number of suppliers that can be found on the
BG Micro ALL Electronics Corp.
555 N. 5th Street Suite 125 905 S. Vermont Ave.
Garland, TX 75040 Los Angeles, Cal 90006
(NOTE: If you wish to use ONLY Spring
Return Switches, the Power Supply is NOT
When wired to
this configuration, 5VDC from the Power Supply (Fig 2) is allowed to
enter the Relay through the CLOSED contacts of the SPDT Toggle Switch.
The Relay Pulls-in for about .5 seconds. With the Normally Open contacts
of the Relay are wired to the USB Interface's J1 Connector (Example Pins
1 and 9); your Flight Simulator senses this relay closure and preforms
the function YOU Assigned to the program using the Flight Simulator's
Now if the SPDT Toggle is switched to
its opposit direction; the capacitor now Discharges through the Relay.
Thus allowing it to once again, Close for another .5 seconds. Example;
say you programmed your Flight Simulator to turn the FUEL PUMP "ON/OFF"
using this Toggle Switch. Onced programmed to preform this operation,
you can wire up to 10 SPDT circuits (Fig 1);
Connect all 10 switches to the 5VDC Output from the Power Supply; then
using the Microsoft's Flight Simulator's Settings/Assignment page;
program the 10 SPDT Switches to preform all sorts of useful functions on
your aircraft (See Fig 3).
If you wish to purchase this USB
Interface ( $24.00USD + S/H ), Click HERE