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View Full Version : Converting analog joysticks/pedals over to usb??



sewells
01-02-2002, 02:14 PM
Wanted to see if anyone has attempted to convert an analog joystick device over to usb. I found several chips that can do the job, but unless I plan on making a few 1000 of them they are just too much overhead.

After thinking about it, I realized the microsoft $23 joystick has great compatbility and the control electronics can be readily hacked into your favorite analog device. For me, I'm looking to convert my pro pedals and get them off friggen analog joystick.

Comments appreciated.

http://www.flightsim.com/dcforum/User_files/3c335b0a1716dbd3.jpg

SC008
01-02-2002, 02:26 PM
I have the the device you are looking for E-mail me
Scott

Simpit
01-02-2002, 06:09 PM
LAST EDITED ON Jan-02-02 AT 06:13PM (EDT)[p]Or you might go to Radio Shack and ask them for part no. 26-164, which is a USB adapter for $17.00. A lot easier than disassembling and reassembling your joystick. Of course, you could do it for the fun of it!

Derek

sewells
01-02-2002, 06:14 PM
very cool! have you tried it with fs2kx? I think I'll try picking one up today!

http://www.flightsim.com/dcforum/User_files/3c24c7e93e163a8d.jpg

Simpit
01-02-2002, 06:45 PM
I've got the converter, but I haven't gotten around to converting the rudder pedals to a 4 axis unit like Scott (above) has. I'll probably get to that this weekend and try it out.

Derek

HVB
01-02-2002, 07:06 PM
I also have a analog joystick with rudder pedals, and was thinking of converting them to USB. For those who have converted the signal using a sepperate device: What are the advantages of converting the signal? Does the signal still stutter making the joytick inputs shocky, or is the signal very stable?

regards,

http://www.flightsim.com/dcforum/User_files/3c322c4b1424a9a6.jpg

lnuss
01-02-2002, 08:07 PM
Hmmm... If that works with PFC pedals.....

Larry N.

http://www.flightsim.com/dcforum/User_files/3c22868f655d5d5a.jpg

sewells
01-02-2002, 09:03 PM
I'll let you know later. Just back from radio shack with the adapter. This was too easy!

http://www.flightsim.com/dcforum/User_files/3c24c7e93e163a8d.jpg

sewells
01-02-2002, 09:09 PM
LAST EDITED ON Jan-02-02 AT 09:20PM (EDT)[p]Hey Larry,

Darn those things are expensive at $1500!! They cost more than replacing the pedals in my 172 :)

According to the PFC site (http://www.flypfc.com/flight%20training%20hardware/singlepropedals.html)
they are 15 pin gameport device. So I suspect the answer is yes. Probably worth the $15 at radio shack to find out.

http://www.flightsim.com/dcforum/User_files/3c33bfa13f84093b.jpg

Spongey87
01-02-2002, 09:20 PM
I doubt it will change the stutering, etc... Because it is the mechanisms inside the joystick that make it stutter like that. Good luck though :)

sewells
01-02-2002, 09:42 PM
before I installed the radio shack converter, I thought I'd crack it open and see what i paid $14 for. It is the cypress USB controller chip. Here is an ap note from them as well as a photo.

Ap note: http://www.cypress.com/pub/appnotes/usbjoy.pdf


http://www.flightsim.com/dcforum/User_files/3c33c4d153734713.jpg

http://www.flightsim.com/dcforum/User_files/3c33bfa13f84093b.jpg

lnuss
01-02-2002, 10:21 PM
LAST EDITED ON Jan-02-02 AT 10:30PM (EDT)[p]I was really thinking of the Cirrus pedals (http://www.flypfc.com/flight%20training%20hardware/cirruspedals.html), only $395. I don't have them, but the CH things don't feel much like pedals, and are awkward to use. I've been waiting for PFC to come out with a USB version, but this converter might be the answer.

Larry N.

http://www.flightsim.com/dcforum/User_files/3c22868f655d5d5a.jpg

Simpit
01-02-2002, 10:28 PM
Ta for that - let us know how it works!

Derek

HVB
01-02-2002, 10:49 PM
Oh well. Let us know how it goes.

Hans

sewells
01-03-2002, 12:16 PM
I have three ideas on the studdering (or jittery joy sticks) on analog joysticks comes from.

Since this is a high impedance (100K Ohm) being ran over many feet on a noisy computer environement I believe some of this must be computer generated electrical noise.

The second is that since the joystick is measuring an analog property by timing the charge of a capacitor, it is sussectable to things that get in the way of software like other compute threads, masking interupts, etc.

Finally, these are resistive potentimeters. These things get dirty over time and the contact brush can build up some carbon on it.

so all said and done, I'm realy happy with my $23 optical encoded microsoft usb joystick and await for when we can move everything that way.

http://www.flightsim.com/dcforum/User_files/3c33bfa13f84093b.jpg

Spongey87
01-03-2002, 06:31 PM
So did it reduce stuttering?

sewells
01-04-2002, 09:38 PM
Well....

I can't tell who's soft/hardware to blame, but it appears as though the device has failed completly. I had limited functionality and was attempting to get the hat to function when the windows driver and/or the unit itself has decited to crap out. I attempted to system restore but for some reason it won't attempt the recovery. I'm currently without pedals either through the USB device OR the joystick ports. So right now, it wasn't the best $14 I've spent. I'm going to exchange for a new device tomorrow and see if that helps...

overall, I'd remain cautious about recommending this.

http://www.flightsim.com/dcforum/User_files/3c33bfa13f84093b.jpg