Matias Switches (200-Pack) Discussions | Drop

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Matias Switches (200-Pack)

Mech Keys

Showing 1 of 35 conversations about:

Matias Switches (200-Pack)

chzel

173

Jul 3, 2014

How exactly do these have "N-key rollover support"? Please proof-read your drops MD...

MAR82

Jul 3, 2014

chzelIf the keyboard that they are being used on supports N-Key rollover, they will not pose a problem and will be supported. It's like when part makers say stuff like "optimized for performance" (it's not like they optimized it be crap), it's all marketing.

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AndrewLekashman

2368

Input Club

Jul 3, 2014

chzelNot all switches have the capability for N-Key Rollover! Also, frequently people use these to replace broken switches from older Alps keyboards, so it's good to know their capabilities

cccxm

Jul 3, 2014

AndrewLekashmanI don't see a diode in the switch....

chzel

173

Jul 3, 2014

MAR82IMHO your logic is flawed. Being used in a keyboard that supports NKRO does not make them have "N-key rollover support". I can use a pair of wires instead of the switch and the keyboard will still support NKRO...that doesn't mean the wires "support NKRO". It is a function of the way the switches are wired (matrix) and the controller that reads it. Check out one of the best easy-to-read guides on matrices here: http://pcbheaven.com/wikipages/How_Key_Matrices_Works/

chzel

173

Jul 3, 2014

AndrewLekashmanYes, ALL switches support NKRO when they are used as a part of a matrix with diodes and a controller that supports NKRO. And, NO, Matias DO NOT contain a diode nor do the Alps switches. And quoting the company's marketing mumbo-jumbo without a hint of thought, after having the mistake pointed out, with an extra false statement, is just bad practice. I love the concept of MassDrop, but details like that can ruin an otherwise nice experience. Rgrds, Chris

r691175002

Jul 3, 2014

chzelThat is not true, for a switch to support NKRO it must also contain a diode. (Or the keyboard must have the diodes on the PCB, which is very unusual.)
A pair of wires would not have NKRO even if they were used in a keyboard that was wired for NKRO as they are missing the diodes. Your own link confirms this under the heading "The Masking Problem" showing where diodes are required.
It is unusual to refer to a switch as supporting NKRO, but it is technically correct. If you look at cherry switches, they come in many part numbers with some containing diodes and some without.
For example, the MX1A-11NN switch is a Cherry Black *without* NKRO support as there is no diode. The MX1A-11ND is a Cherry Black with NKRO.

chzel

173

Jul 3, 2014

r691175002"(Or the keyboard must have the diodes on the PCB, which is very unusual.)" In fact THAT is the usual way keyboards are built. I am using one right now. The wires in my example were the equivalent of the orange and purple dots on that gif. The MX1A-11NN switch is a Cherry Black *without* DIODE.

HaaTa

558

Input Club

Jul 3, 2014

chzelSo, just because I dislike mis-information, here's a keyboard with switches that absolutely cannot be NKRO (without modifying the switches). https://www.flickr.com/photos/triplehaata/sets/72157636174490175/
Making it NKRO would require something like polarizing lenses as it uses an optical encoder to detect which key is being pressed.
And, to prove this isn't a one-off, here's another one with a completely different design (easier to make NKRO, but that has nothing to do with diodes). https://www.flickr.com/photos/triplehaata/sets/72157639444527936/

AndrewLekashman

2368

Input Club

Jul 3, 2014

chzelGood sir, you are correct!

I just broke open a switch to see if I was accurate with my earlier statement and I was not. I've cleared out misinformation in this thread and I'm adjusting the listing. I also called up Matias to let them know that their website had a bit of confusing language and they were incredibly impressed by your comments.

chzel

173

Jul 3, 2014

AndrewLekashmanIt is great to see such fast reaction! Keep up the good work and the pretty nice drops!
@HaaTa: Very interesting designs, esp the Collimation one! I need to look into them! BTW great collection!

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cccxm

Jul 5, 2014

r691175002most boards already have seperate diodes. Matias switch defintly does not have a diode in it

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gcb0

Jul 6, 2014

AndrewLekashmanmight as well remove "apple's alps switches" from the first paragraph.
that's wrong on so many levels its embarrassing to read. :-)

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gcb0

Jul 6, 2014

HaaTathat's just a bunch of random pictures. (at least the mobile flicker version I'm getting). with zero information to back your (sorry) crazy claims.
even if it was a photodiode with a filter to only trigger with the light from krypton's sun, it doesn't matter. in the end it will result in a resistance being close to zero or above some value. after that, it's a switch like anyother.

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