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geekhack Community => Keyboards => Topic started by: Idiot_Hacker on Wed, 27 May 2009, 13:07:51

Title: G80-3000lpceu-0
Post by: Idiot_Hacker on Wed, 27 May 2009, 13:07:51

G80-3000 Standard PC Keyboard (USB /PS-2 Combo Key, US 104 Key MX Gold and XPoint) - Color: Light Grey

http://www.posglobal.com/G80-3000LPCEU-0.html (http://www.posglobal.com/G80-3000LPCEU-0.html)

Can someone tell what cherry switch this keyboard has and what is XPoint?

Title: G80-3000lpceu-0
Post by: pmyshkin on Wed, 27 May 2009, 13:19:20

Quote from: Idiot_Hacker;92951

Can someone tell what cherry switch this keyboard has and what is XPoint?

I believe the P stands for linear, so blacks.

http://www.cherry.de/english/products/keyboards_G80-3000.htm

Look under "Models"

Title: G80-3000lpceu-0
Post by: lowpoly on Wed, 27 May 2009, 13:48:44

XPoint: Someone abbreviated Crosspoint (or Gold Crosspoint). It's how the contact inside the switch is designed.

Title: G80-3000lpceu-0
Post by: Z Redux on Wed, 27 May 2009, 13:58:58

Here (http://park16.wakwak.com/%7Eex4/kb/tech_cherry_mx.htm) are a few pictures showing the crosspoint contact inside Cherry MX switches (about half way down the page).

The link comes from Chloe's Cherry Switches Wiki page (http://geekhack.org/showwiki.php?title=Cherry+switches).

Title: G80-3000lpceu-0
Post by: Idiot_Hacker on Wed, 27 May 2009, 16:39:48

Quote from: Z Redux;92967

Here (http://park16.wakwak.com/%7Eex4/kb/tech_cherry_mx.htm) are a few pictures showing the crosspoint contact inside Cherry MX switches (about half way down the page).

The link comes from Chloe's Cherry Switches Wiki page (http://geekhack.org/showwiki.php?title=Cherry+switches).

Thanks, I didn't even know there was a wiki for it

Title: G80-3000lpceu-0
Post by: patrickgeekhack on Thu, 28 May 2009, 08:04:28

Quote from: Idiot_Hacker;92951

G80-3000 Standard PC Keyboard (USB /PS-2 Combo Key, US 104 Key MX Gold and XPoint) - Color: Light Grey

http://www.posglobal.com/G80-3000LPCEU-0.html (http://www.posglobal.com/G80-3000LPCEU-0.html)

Can someone tell what cherry switch this keyboard has and what is XPoint?

If you are interested in getting this keyboard, I suggest you try getting someone on the phone from POSGlobal: not an easy task. The system might let you create the order even though they don't any in stock.

Title: G80-3000lpceu-0
Post by: itlnstln on Thu, 28 May 2009, 09:36:02

Quote from: ripster;93117

Does anybody know what causes the click SOUND on a blue cherry switch?
 
It looks like it's caused by the white plastic part hitting the blue part. That would explain the plasticy sound. Webwit described it as "artificial", which is my thought when I switch in a Blue Cherry board for a Model M BS.
 
Chloe's link is in Japanese and but it seems to indicate vibration and something in that little exclamation bubble as the switch contacts are made.

You're exactly right.  On that same site, there is an animation of how it works.  Basically, the white plastic piece is butted up against the top of the switch and as it passes over the mechanism, the white plastic piece falls and clicks against the stem.

Title: G80-3000lpceu-0
Post by: itlnstln on Thu, 28 May 2009, 09:37:22

All the way on the bottom of this page is the blue Cherry animation: http://park16.wakwak.com/~ex4/kb/tech_cherry_mx.htm

Title: G80-3000lpceu-0
Post by: xyzzy on Thu, 28 May 2009, 09:46:54

Here's a direct link to the animation in all its glory: http://park16.wakwak.com/~ex4/kb/tech/cherry_mx_click.swf

Title: G80-3000lpceu-0
Post by: itlnstln on Thu, 28 May 2009, 10:00:17

Quote from: ripster;93124

Did anyone else find that animation strangely erotic?

Well, the switch is made by a company called "Cherry."

Title: G80-3000lpceu-0
Post by: itlnstln on Thu, 28 May 2009, 10:15:05

Quote from: ripster;93129

LOL - well I knew YOU would!

I didn't say that.  I was just offering a possible explanation. ;)

Title: G80-3000lpceu-0
Post by: IBI on Thu, 28 May 2009, 11:55:16

Quote from: ripster;93124

OK - now I got it.  The white part springs DOWN.  I thought it would go up.  It's actually hitting the tabs on the blue stem causing the sound (and some spring vibration).

I don't, what's causing the white part to go down in the last step?

Title: G80-3000lpceu-0
Post by: itlnstln on Thu, 28 May 2009, 13:05:19

Quote from: IBI;93133

I don't, what's causing the white part to go down in the last step?

It appears to be the lack of upward resistance from the leaf.  Once it gets past the leaf, the white piece falls.

Title: G80-3000lpceu-0
Post by: itlnstln on Thu, 28 May 2009, 13:41:35

There might be a spring in the white piece pushing down.