rec.autos.simulators

Logitech G25

Larr

Logitech G25

by Larr » Wed, 09 Jan 2008 02:41:03

Whether it NEEDS to or not is besides the point.  I'm only saying what
Logitech told me.  Which is apparantly wrong.

-Larry





>> *Date:* Fri, 4 Jan 2008 09:20:18 -0500

>> The shifter has no switches.  They are pots.  This came directly
>> from Logitech support.

>> -Larry

> Sorry Larry, but the shifter would not need to have pots.

> Pots (potentieometers) are used to measure the movement and position of a
> controller or device when there is more than just two potential positions
> (eg: on and off), for example to measure the position of a pedal or a
> steering wheel, as the potential position of the device is almost
> infinate (between two stop points), IYSWIM.

> For the shifter, the device or controller only needs to know whether the
> gear lever is in one of two positions (for each gear), eg: in that gear
> or not in that gear.

> Therefore this is easily achieved using micro switches.

> I hope my very simple explanation gets across what I am trying to say.

> 8-)

> *Peter* -  http://www.racesimcentral.net/

Larr

Logitech G25

by Larr » Wed, 09 Jan 2008 02:43:14

Ok, so I WAS right.  Any posts from me indicating I may have been wrong are
purely a figment of your imagination :)

-Larry







>>> *Date:* Fri, 4 Jan 2008 09:20:18 -0500

>>> The shifter has no switches.  They are pots.  This came directly
>>> from Logitech support.

>>> -Larry

>> Sorry Larry, but the shifter would not need to have pots.

> Well, in this case Larry is right. The shifter has two potentiometers and
> one switch (to determine whether it's pushed down or not). The mechanism
> is not unlike a joyistick that has a metal gate to only allow certainly
> positions, which are then translated into "gearshift buttons" by the
> firmware.

> This thread (http://www.youtube.com/watch?v=5uk-T46soz8) has some pictures
> and a little bit of discussion about the construction.

>> Pots (potentieometers) are used to measure the movement and position of a
>> controller or device when there is more than just two potential positions
>> (eg: on and off), for example to measure the position of a pedal or a
>> steering wheel, as the potential position of the device is almost
>> infinate (between two stop points), IYSWIM.

>> For the shifter, the device or controller only needs to know whether the
>> gear lever is in one of two positions (for each gear), eg: in that gear
>> or not in that gear.

>> Therefore this is easily achieved using micro switches.

> You describe one possible approach, likely the most obvious one. I am not
> sure why the "joystick" approach was chosen over the "microswitch"
> approach, but I'm sure there must be reasons.

Larr

Logitech G25

by Larr » Wed, 09 Jan 2008 02:44:37

Video removed by user :(

-Larry







>>> *Date:* Fri, 4 Jan 2008 09:20:18 -0500

>>> The shifter has no switches.  They are pots.  This came directly
>>> from Logitech support.

>>> -Larry

>> Sorry Larry, but the shifter would not need to have pots.

> Well, in this case Larry is right. The shifter has two potentiometers and
> one switch (to determine whether it's pushed down or not). The mechanism
> is not unlike a joyistick that has a metal gate to only allow certainly
> positions, which are then translated into "gearshift buttons" by the
> firmware.

> This thread (http://www.youtube.com/watch?v=5uk-T46soz8) has some pictures
> and a little bit of discussion about the construction.

>> Pots (potentieometers) are used to measure the movement and position of a
>> controller or device when there is more than just two potential positions
>> (eg: on and off), for example to measure the position of a pedal or a
>> steering wheel, as the potential position of the device is almost
>> infinate (between two stop points), IYSWIM.

>> For the shifter, the device or controller only needs to know whether the
>> gear lever is in one of two positions (for each gear), eg: in that gear
>> or not in that gear.

>> Therefore this is easily achieved using micro switches.

> You describe one possible approach, likely the most obvious one. I am not
> sure why the "joystick" approach was chosen over the "microswitch"
> approach, but I'm sure there must be reasons.

Ronald Stoeh

Logitech G25

by Ronald Stoeh » Wed, 09 Jan 2008 04:56:50


> Ok, so I WAS right.  Any posts from me indicating I may have been wrong
> are purely a figment of your imagination :)

At least partially... ;)

I really couldn't imaging they would use pots (internal, no calibration needed)
to implement this shifter, esp. as one can hear clicks while shifting.
But I read in a forum about shifter mods about pots, too. Unbelievable...

</begin modded quote>
Any posts from me indicating I may have been completely right are purely a
figment of your imagination :)
</end modded quote>

ronny

> -Larry








>>>> *Date:* Fri, 4 Jan 2008 09:20:18 -0500

>>>> The shifter has no switches.  They are pots.  This came directly
>>>> from Logitech support.

>>>> -Larry

>>> Sorry Larry, but the shifter would not need to have pots.

>> Well, in this case Larry is right. The shifter has two potentiometers
>> and one switch (to determine whether it's pushed down or not). The
>> mechanism is not unlike a joyistick that has a metal gate to only
>> allow certainly positions, which are then translated into "gearshift
>> buttons" by the firmware.

>> This thread (http://www.youtube.com/watch?v=5uk-T46soz8) has some
>> pictures and a little bit of discussion about the construction.

>>> Pots (potentieometers) are used to measure the movement and position
>>> of a
>>> controller or device when there is more than just two potential
>>> positions
>>> (eg: on and off), for example to measure the position of a pedal or a
>>> steering wheel, as the potential position of the device is almost
>>> infinate (between two stop points), IYSWIM.

>>> For the shifter, the device or controller only needs to know whether the
>>> gear lever is in one of two positions (for each gear), eg: in that gear
>>> or not in that gear.

>>> Therefore this is easily achieved using micro switches.

>> You describe one possible approach, likely the most obvious one. I am
>> not sure why the "joystick" approach was chosen over the "microswitch"
>> approach, but I'm sure there must be reasons.

John Smit

Logitech G25

by John Smit » Wed, 09 Jan 2008 13:49:59


Doh! It'd help if I posted the correct link...

http://forum.rscnet.org/showthread.php?t=277322

That's the one I meant to post yesterday ;)

Larr

Logitech G25

by Larr » Wed, 09 Jan 2008 23:01:01

Wow.

They could not have made this any more complicated if they tried!

Like everyone else, I don't understand why they didn't just use switches.

-Larry




>> Video removed by user :(

>> -Larry

> Doh! It'd help if I posted the correct link...

> http://forum.rscnet.org/showthread.php?t=277322

> That's the one I meant to post yesterday ;)

P Ga

Logitech G25

by P Ga » Thu, 10 Jan 2008 03:03:41

Aha, well I stand corrected, they have indeed used a pot, although WHY
they have used a pot is beyond me when microswitches would have been a
much better solution IMHO?

Thanx for the info tho, and the photos in that thread are very good, its
handy to see what a G25 looks like from the inside....

8-)

*Peter*

Larr

Logitech G25

by Larr » Thu, 10 Jan 2008 03:25:49

Uncle Larry would never steer you wrong :)

-Larry


Quentin Queerbotto

Logitech G25

by Quentin Queerbotto » Sat, 12 Jan 2008 18:53:15

Okay, looks like there's only one switch (the one I saw) and that you're
correct.


> Hmmm.... Interesting.  I don't know why Logitec would have told me
> otherwise...

> -Larry



>> Larry, I took mine apart and it has switches in it.



>>> The shifter has no switches.  They are pots.  This came directly from
>>> Logitech support.

>>> -Larry



>>>> Hi, Steve!

>>>> Of course, the shifter only contains springs and switches.
>>>> Some will never "get it", although they never calibrated those
>>>> mystic "pots"... ;)

>>>> l8er
>>>> ronny



>>>>>> Thanks Chaps

>>>>>> Any known issues with pots or switches wearing out? Does the wheel
>>>>>> use a pot or is it solid state?

>>>>>> Cheers

>>>>>> Steve




>>>>>>>> Thinking about getting one. Any issues about getting it to work
>>>>>>>> with GPL or NR2003?

>>>>>>>> I also read the gearstick is not that great. Could I use the wheel
>>>>>>>> and pedals with my ACT Labs shifter (gearstick)?

>>>>>>> I find the gearstick is perfectly fine in sequential mode but feels
>>>>>>> unlike a real gear lever in h-pattern mode and makes a lot of
>>>>>>> clicking noises.

>>>>>>> Overall it is a fine wheel and pedals and I would recommend it.

>>>>>>> I see no reason why it wouldn't work with the act-labs shifter, both
>>>>>>> are usb devices and should show up as separate controllers you can
>>>>>>> select the controls from to mix & match.

>>>>>>> Cheers
>>>>>>> Tony


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