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Author Topic: My Keyboard Sometimes Registers Letters twice! HELP!  (Read 1880 times)

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Offline YoungMichael88

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My Keyboard Sometimes Registers Letters twice! HELP!
« on: Wed, 15 January 2014, 14:52:34 »
It seems that my keyboard will double register letters from time to time. I have tried adjusting the key repeat speed and delay but it has not helped. It happens rarely but often enough that it gets pretty annoying. I'm using an LZ-GH but i'm going to switch keyboards to see if the problem persists. Im just wondering if anyone else has ever experienced this problem. I'm using a Mac (take your bashing elsewhere please) and MX Greens. The problem doesn't always occur with the same keys either.

Any ideas?

Thanks
YM88

EDIT: This was meant to go in the Keyboard forum not Key Caps
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Offline Puddsy

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Re: My Keyboard Sometimes Registers Letters twice! HELP!
« Reply #1 on: Wed, 15 January 2014, 14:55:17 »
That's called chattering. I don't know of a fix offhand, but one does exist.
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Offline YoungMichael88

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Re: My Keyboard Sometimes Registers Letters twice! HELP!
« Reply #2 on: Wed, 15 January 2014, 14:56:43 »
just found this thread
http://geekhack.org/index.php?topic=38339.0

so this is a common problem?
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Offline CPTBadAss

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Re: My Keyboard Sometimes Registers Letters twice! HELP!
« Reply #3 on: Wed, 15 January 2014, 14:57:38 »
Are you sure the soldering joints are ok? Check those. If they're ok, try putting a piece of drawer liner between your PCB and case. I've had that happen on my Pure with a CNC case as well as my 700R. Something seemed to be shorting out against the case. The drawer liner stopped my issues.

Edit: Oh yeah...I forgot there was issues with the LZ-GH firmware...

There's a debounce issue with the firmware. Some discussion can be found here and here. I can't remember exactly where Photoelectric was talking about it but I saw you linked the "Please fix it" thread.
« Last Edit: Wed, 15 January 2014, 15:02:19 by CPTBadAss »
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Offline Puddsy

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Re: My Keyboard Sometimes Registers Letters twice! HELP!
« Reply #4 on: Wed, 15 January 2014, 14:58:03 »
Yeah, seems to happen more often than it should.
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QFR | MJ2 TKL | "Bulgogiboard" (Keycon 104) | ctrl.alt x GON 60% | TGR Alice | Mira SE #29 | Mira SE #34 | Revo One | z | Keycult No. 1 | First CW87 prototype | Mech27v1 | Camp C225 | Duck Orion V1 | LZ CLS sxh | Geon Frog TKL | Hiney TKL One | Geon Glare TKL



"Everything is worse, but in a barely perceptible and indefinable way" -dollartacos, after I came back from a break | "Is Linkshine our Nixon?" -NAV | "Puddsy is the Puddsy of keebs" -ns90

Offline YoungMichael88

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Re: My Keyboard Sometimes Registers Letters twice! HELP!
« Reply #5 on: Wed, 15 January 2014, 15:01:56 »
Quote from: CPTBadAss on Wed, 15 January 2014, 14:57:38
Are you sure the soldering joints are ok? Check those. If they're ok, try putting a piece of drawer liner between your PCB and case. I've had that happen on my Pure with a CNC case as well as my 700R. Something seemed to be shorting out against the case. The drawer liner stopped my issues.

Edit: Oh yeah...I forgot there was issues with the LZ-GH firmware...
Yea, I have a layer of cloth between PCB and case and its not always the same keys that repeat so I doubt its a soldering issue. I'll check the joints and keep a log on the keys that its happening on and maybe re-flow those joints one day.
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Offline YoungMichael88

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Re: My Keyboard Sometimes Registers Letters twice! HELP!
« Reply #6 on: Wed, 15 January 2014, 15:05:21 »
Now that I know this is called 'Chattering' I have found this thread http://geekhack.org/index.php?topic=51663.new#new

I guess this is a firmware issue.
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Offline joneslee85

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Re: My Keyboard Sometimes Registers Letters twice! HELP!
« Reply #7 on: Wed, 15 January 2014, 15:06:31 »
It is firmware issue mate,
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Offline CPTBadAss

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Re: My Keyboard Sometimes Registers Letters twice! HELP!
« Reply #8 on: Wed, 15 January 2014, 15:07:11 »
This is the thread on the LZ-GH firmware issue I was thinking of
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Offline Photoelectric

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Re: My Keyboard Sometimes Registers Letters twice! HELP!
« Reply #9 on: Wed, 15 January 2014, 15:11:48 »
Yup, sounds like a firmware issue (debounce handling).  Last I heard, new firmware should be available later this month.  I hope it's true.
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Offline YoungMichael88

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Re: My Keyboard Sometimes Registers Letters twice! HELP!
« Reply #10 on: Wed, 15 January 2014, 23:15:24 »

Quote from: Photoelectric on Wed, 15 January 2014, 15:11:48
Yup, sounds like a firmware issue (debounce handling).  Last I heard, new firmware should be available later this month.  I hope it's true.
I hope so. I've been putting up with it for months. I finally switched back to my poker. Has anyone been using the existing firmware on Mac? I just plugged the board in and used it without using any firmware.
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