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geekhack Community => Keyboards => Topic started by: HotRoderX on Fri, 02 February 2018, 16:09:17

Title: bad switches?
Post by: HotRoderX on Fri, 02 February 2018, 16:09:17
Whats the chances of getting some bad switches in a pack? Give a little context. I have had this K-Type since December. I have used Halos (To test with) > Tealios > Kailh Pro Purples for about a week. Today I got in some Box Black switches. I went about switching all my switches out got everything done. Started typing and had double types on a number of switches. I ended up doing a bit of trouble shooting and figured out the issue is the switches in question. I can even replicate the issue with the switches I think are bad which is 7 so far. Is this common? I mechanically can't think of anything that would cause a malfunction in a switch. Then again when you can change a piece of equipment out and it resolves the issue. Then the answer is clear. I was just wondering is it common practice to test switches before building a keyboard in case of issues? I got lucky the broken switches are being used on a hot swap board. 
Title: Re: bad switches?
Post by: Tactile on Fri, 02 February 2018, 16:22:08
Cherry spec the debounce time of MX switches at 5ms or less. If the controller is programmed for this timing... What is the debounce time for the new switches?
Title: Re: bad switches?
Post by: Leslieann on Fri, 02 February 2018, 16:44:52
Could also be they got too hot during soldering.
They may use a plastic with a lower melting point than you are used to.
Title: Re: bad switches?
Post by: HotRoderX on Fri, 02 February 2018, 16:58:40
Cherry spec the debounce time of MX switches at 5ms or less. If the controller is programmed for this timing... What is the debounce time for the new switches?

I am honestly not sure but that might be a possibility thought found majority of the switches are working fine so far

Could also be they got too hot during soldering.
They may use a plastic with a lower melting point than you are used to.

These where not soldered in. The board uses hot swap sockets.
Title: Re: bad switches?
Post by: Leslieann on Fri, 02 February 2018, 18:21:23
May be a bad batch, it happens.

Title: Re: bad switches?
Post by: Puddsy on Fri, 02 February 2018, 18:32:10
May be a bad batch, it happens.



most likely

could also just be some bad luck
Title: Re: bad switches?
Post by: brainT on Fri, 02 February 2018, 19:35:28
I picked up a 5 pack of Box Blacks to try out and they all have chatter issues if you wiggle the stem back and forth while they're depressed which doesn't happen if I swap the stems into different housings. 

Bad batches happen so when I order more I'll just buy extras.
Title: Re: bad switches?
Post by: pixelpusher on Fri, 02 February 2018, 20:33:14
I had this issue with a bag of pale blue box.  Almost all had the chatter when you pressed down and wiggled. Luckily it was a hotswap board.  Mike sent me replacements and they all worked fine. Bad batches happen for sure
Title: Re: bad switches?
Post by: HotRoderX on Fri, 02 February 2018, 20:36:01
Thanks everyone I was kind a scratching my head. Cause with how the switches are constructed I thought short of corrosion they would work. These are box blacks and I bet its the same thing when the stim wiggles it chatters. I tested the switches in another hotswap board and all 10 did the same. I am still testing to make sure there isn't more broken ones glad I am not crazy