Recent comments in /f/MechanicalKeyboards

MattBoog t1_iwfs6q7 wrote

Agreed, but if possible I specifically want a key just above the right arrow. That sadly doesn't really exist. So I might have to change my keybinds first.

1

sunfaller t1_iwfrzsk wrote

For some reason, I like the aesthetics of 65 but like the usefulness of 75.

Unfortunately I also don't like the compacted 75 where the F and number rows have no space. I guess I collect 65 keyboards for display but actually use 75 for work and at home. And thus I like to buy more 65 but only keep 2 75s at a time

1

MetalHivemind t1_iwfr8v8 wrote

Okay, so I did a bit of research and this keeb does indeed have ESD protection.

Here is a shot of the PCb where the protection IC is located: https://i.ibb.co/7KQQ7gZ/IMG-5526.jpg

In that shot, you can see the JST connector and to it's right, a small IC labeled UL26. That IC is the ESD protection. Here is it's datasheet: https://www.st.com/resource/en/datasheet/usblc6-2.pdf

Here is a shot of the daughterboard: https://i.ibb.co/2vnQqjJ/IMG-5516.jpg

As you can see, there is no UL26 located on the daughterboard. There is a part labeled A7 that appears to be grounded (?) to the case via the db's screwhole. I also speculate that the USB hole in the case is too tight and perhaps the USB connector is hitting the case and that's how the ESD is making it through. The main PCB should be well isolated with the gaskets in use as well as the thin isolation sheet in the case.

Perhaps the fault is with the data lines? Doesn't seem to be much if any protection on those lines and maybe that's how ESD is affecting these boards... but I honestly don't know enough about this and I am just hoping that what I provided can offer some insight into the situation.

6

Stuart_Munto t1_iwfqjbi wrote

I completely agree

Exploded 75% is by far my favourite - having a slight separation for the arrow keys not only (imo) looks better but is highly functional

TKL is my second favourite form factor. I don’t think I could daily drive a 60%

6

shubashubamogumogu t1_iwfqh7d wrote

I think 75% had their time. Back when I joined this subreddit last year they were basically every post. GMMK Pro's and Q1's galore.

Now as other comments hinted 65% layout is quite common. TKLs' have had some kind of resurgence as well, which from digging through old geekhack threads seemed to be quite popular back in the day.

16

KABOTECH t1_iwfn55o wrote

Reply to comment by QWERKey-UK in We Need More 75s by QWERKey-UK

I'm talking about 60, most people say it's the best form factor but I don't agree, I'm okay with FN+F keys but it's a pain in the ass when it doesn't have separate arrow keys

1

QWERKey-UK t1_iwfmyka wrote

Do you have a central heating radiator that has any unpainted parts visible? While it may not necessarily be grounded, that sheer mass of the central heating system would present a low resistance destination for any residual static you may be carrying.

Also... your computer would be grounded, so touch any metal parts of the computer case. Unless it's painted with something insulating, it would do a similar job. One of the chassis screws on your PSU would be a good choice.

3

KABOTECH t1_iwfmfls wrote

Anything without proper arrow keys is a no for me, I do like small form factors but it's just stupid when you have to press FN to use arrow keys

3

QWERKey-UK t1_iwfmc1d wrote

The OP (of the other thread) described getting a static shock off his case, and the board instantly died, so it was definitely ESD that killed it. If you mean was it just some weird fluke event that was a combination of rare, unlikely circumstances that would be difficult to repeat? Sure.... no reason why not, but it does show that the board is not as well hardened against ESD as it could be.

1

QWERKey-UK OP t1_iwflyhv wrote

Reply to comment by WozNZ in We Need More 75s by QWERKey-UK

There seems to be more TKLs than 75s. There's been a few TKLs lately. 100% has always been left out in the cold, but 75s seems to be a recent thing. I'm sure they are waning in popularity, which would be a shame.

11

WozNZ t1_iwflmlv wrote

This is true of most formats apart from 60/65%.

I prefer TKL and 100% and that gets even more difficult and expensive than 75%

14

QWERKey-UK t1_iwfkk79 wrote

>I’m just curious that this might be why people are zapping the board.

Unlikely, as if it was caused by this it would be dead upon building it. The guy who posted yesterday zapped a fully built, working board that was in daily use.

Also, there's only been one post of a zapped Space, so it may not be widespread. (shrug)

2