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Generic Filightsim Interface (8 axis)

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muzland:
Sorry I missed off the price........

The guy wanted

PoDunkMoFo:
Interesting

Here is a guy that sells the completed product.

http://www.lbodnar.dsl.pipex.com/joystick/

$29.99

Seems as if all the buttons are in a Matrix so I don't know if ghosting is an issue or if that's a keyboard only problem.

refusnik:

--- Quote from: muzland on February 27, 2006, 06:11:50 pm ---The guy wanted
--- End quote ---

muzland:
Hi Refusnik,

Glad you took it in good spirits. I did not realise that it was special delivery rates.

Have you any information on any ghosting or blocking issues that may occur with this?

Also, I would probably have bought one (would have been interesting to build up on a bit of veroboard) but it was the thought of having to source all of the caps, resistors, 4Mhz Clock, USB socket and pin outs separately that put me off. It can cost a fortune to get just a small number of each of these parts. Anybody know of good sources for this??

As an example, I ordered 100 .187" female push on crimp connectors recently for my button and joystick wiring. They ended up costing me just over

refusnik:

--- Quote from: muzland on February 28, 2006, 07:52:55 am ---Have you any information on any ghosting or blocking issues that may occur with this?

Also, I would probably have bought one (would have been interesting to build up on a bit of veroboard) but it was the thought of having to source all of the caps, resistors, 4Mhz Clock, USB socket and pin outs separately that put me off. It can cost a fortune to get just a small number of each of these parts. Anybody know of good sources for this??

I think the built up board is a good option. Is this really dollars or GBP as I though Pipex was a UK ISP? Even in pounds it is comparably prices to an IPAC with the added extra of analugue inputs.
--- End quote ---
I have nothing to hide  ;D

The scan matrix is a scan matrix.  If you don't use diodes in series with buttons than three buttons pressed simultaneously in such a way that they form three corners of a box (L-shape)  will short together two row and two column scan lines and there is now way to tell whether the fourth corner button is pressed or not.

There are two ways around that:
1. Use diodes - guaranteed to work on wires up to few feet long and no cross-influence between the buttons/switches.
2.Put some thinking in arranging the buttons so that those, that are most probably pressed at the same time does not create an L-shape, e.g. putting 6 buttons on either line or diagonal of the scan matrix will make them completely independent and not causing any ghosting even if they are closed at the same time.  However, press anything else and there will be L-shape created.

I did not put scan matrix diodes on the PCB on purpose due to its size.  It is easier to mount them directly on the buttons/switches themselves.  And many people just don't need them at all as they use onl momentary presses (e.g. many flight simulators, weapon firing, etc...)

I really wanted to give all the options to the builders by providing chip-only option - on a shoestring you don't need a USB B socket - you can slice and solder USB cable directly to the proto board.

The cost IS in USD and flat over the world - so boils down to

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