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Circuit diagram for FMS interfacing

FMS interface uses the parallel port or serial port on the computer, but there are many kinds of real circuits, the following is my collected some of the online schematic for reference production.
1 parallel port interface (discrete components)
For Windows 95/98/Me operating system. This circuit with the FMS software of the circuit with more than a 200K resistor, this is mainly to connect with JR's remote control, remote control coach for JR's mouth seems to be open collector design, and needs a pull-up resistor to function properly. However, the circuit is full of simple, with few components, it is not too high level for the radio production of friends, but not for a little pity on Win2000/XP.

2, serial interface (discrete components)
Operating system for Windows 95/98/Me, the circuit is not very complicated, of course, the circuit components more often than the parallel port, serial port and parallel port is much smaller than the shell, how these components are placed in a small enclosure where you will inevitably have to Think it was. As a small size is its greatest advantage, and do not take the computer parallel port, because now there are some still use the parallel port printer. Drawback is also not supported Win2000/XP.
(Production process see: FMS Serial Interface Design (discrete components))

3, PIC serial interface (using the PIC12C508 microcontroller)
For Windows 95/98/Me/2000/XP operating system. Circuit is simple, just use MicroChip company PIC12C508 MCU, inevitably use to the programmer to write programs to the chip, this thing may not be generally friends, but most places have sold microcontroller programmer, you just take the floppy disk to need to use the HEX file copy to your boss to help you write on it. The biggest advantage of this interface is supported Win2000/XP operating systems, you can use this software to PPJOY virtual game controller with remote control to play computer games.
(Production process see: FMS Serial PIC interface to production)

4,25-pin PIC serial interface (using the PIC12C508 microcontroller)
For Windows 95/98/Me/2000/XP operating system. With 9 pin interface circuit is basically the same, just a 25-pin serial port connection, it is not used a lot.

5,9-pin PIC serial interface (using the PIC16C84 MCU)
For Windows 95/98/Me/2000/XP operating system. However, because PIC16C84 MCU is a 18 pin integrated circuit, the serial port to be loaded to the general case is impossible, and if the use of chip package models might be possible, but in general not as good as the first 3 to use PIC12C508 Microcontroller to convenience.

6,25-pin PIC serial interface (using the PIC16C84 microcontroller)
For Windows 95/98/Me/2000/XP operating system. This is a circuit on the 25-pin serial port version, but 25-pin serial port of the shell more lenient, all components are placed in the shell interface, or there is no problem.

Click to enlarge
The above six kinds of circuit to the choice depends on personal use of the operating system and skilled at. If you are Win95/98/Me operating system, then that both 1 and 2 is the most appropriate, make simple. If Win2000/XP operating system, then the first 3 the most appropriate course, if your computer can use only 25-pin serial port, then select the first 4 just fine. 4 in front of the interface I have produced, if you have any questions, then you can contact me.

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Circuit diagram for FMS interfacing