… and alla others allso i have understood, had realy lousy analog “joysticks”, the deadband is like a mile wide, and then it changes value up to 127, and then it is a deadband AFTER allso … and the deadband isnt centerd, and it isnt the same on the different axis … 
Had anyone done any tweaking, or is it a dead call ?? ( and that is why you all are building your own homebuilt controllers) ??
can smething be done about it ?
I have found the Lynxmotion ones better than some of the others like the original Sony ones as they are usually consistent. That is when you move the sticks and release it comes back to the same zero points, the original ones that I have tried did not which was a pain.
I have found that the PS2s give me some large granular values, like maybe 3-5 maybe 10 real values in each direction. For things like the Brats and rovers and the somewhat for the hexs I find it is sort-of OK as I want to go slow or maybe medium or maybe high speed. Which you can do reasonably well. Many of the programs give a large dead band in the center that they map to zero to remove the differences from PS2 to PS2 and different directions on the individual PS2s…
But for fine control the Gimbals on RC receivers (and our DIY controllers) give us much more accurate and more controllable values. We did find differences in these as well, which is why the DIY code has some calibration code in it. This code has you move the sticks to the max and min values in each direction and to release them so they center. The code than maps the actual inputs from the each of these such that the zero point is 127(or was it 128) and that each side of the center point maps correctly such that the top value is near 255 and low value is near 0… Lots more details about this in the threads on the DIY remote as well as the code…
PappaNiklas,
I find that the Lynxmotion Robot Controller works very well for the beginner to average robot and robot builder, I tried other Sony wireless and they weren’t that great compared to the Lynxmotion one.
But if hi-tech is what you want then I’d highly recommend the DIY robot controller that the guys are working on. There is absolutely nothing out there that is better for our purposes to control the Lynx robots, just a note ( I do more lurking than anything on these forums and am just amazed at the brilliant ideas that actually come together in a physical form, well enough giving everyone a fat head ), any how I would suggest to anyone to build the controller, you’ll be glad that you did. I’m collecting to parts to do it myself.
Dave
I dont demand that much of a thing for 20 bux, you sort of get what you pay for
my Futaba 4PK cost $600 and of corse it is better…
My question was more of “has anyone tweed the PS2 to get it better ?”
There are a lot of propellerheads here, i was thinking about maby someone had changed the analog sticks to two real yoysticks or something like that… if you follow my thinking
I here ya, it’s possible that larger more throw sticks would give better handling control but for conversation sake a 50k ohm pot is a 50k ohm pot no matter how large or small the device is, I think earlier in this thread it was mentioned that the DIY robot controller was able to adjust the perimeters of the joysticks through software in the Robot Controller that’s why I would look into building it…but that’s only my opinion because I’m one that can use or reverse engineer someone else s devices but can’t seem to initiate a start, once the device has been started then gung-ho I follow and understand the rest.
A good joystick will have mechanical adjustments, and trim pots. It will have better gimbal bearings, and a better “feel”.
Commercial joysticks can get quite expensive!
Alan KM6VV
Buy an old RC unit …rip out the pots and try it out 
Nowadays even the good joysticks don’t have trimmer pots. They uses switches and handle everything in software.
I found this one today, cost me $30 (incl VAT)
http://nc.sverige.net/nc/robot/DSC09400.JPG
The sticks is in alu and has a good grip, but the gimbals pure plastic fantastic…
http://nc.sverige.net/nc/robot/DSC09398.JPG
The inside is allmost empty, and the gimbals is very easy to take away, or maby a lot of space to import a PS2-controller …
http://nc.sverige.net/nc/robot/DSC09390.JPG
The trim is mechanic old school and the pot’s are 5k, and thats good
http://nc.sverige.net/nc/robot/DSC09391.JPG
Swedish link
teknikmagasinet.se/db.pl?tf= … dio%20USB&
International Link:
art-tech.com/english/Article … icleID=135
