Author Topic: Simple Questions, Simple Answers (FAQ in the OP)  (Read 2808251 times)

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Offline Leopard223

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16850 on: Sun, 16 January 2022, 21:38:58 »
I've seen some Ultrasonic cleaners on AliExpress going for about $10, do you think they'll work properly? gut says no but AliExpress never fails to surprise me.

Offline faye_valentine

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16851 on: Thu, 03 February 2022, 02:05:00 »
Trying to replace ibm model rubber dome keypad with mechanical keypad I had lying around. When removing the mechanical keypad from its previous circuit, I believe I might have broken it. Please help.

Offline Username

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16852 on: Fri, 04 February 2022, 07:08:18 »
I used to use white lithium grease as lube for my stabilizers. Is that okay? Or any other good recommendations?

Offline Handke

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16853 on: Fri, 04 February 2022, 07:39:07 »
I've seen some Ultrasonic cleaners on AliExpress going for about $10, do you think they'll work properly? gut says no but AliExpress never fails to surprise me.

If you're going to clean keycaps, a big model (100 watt) will be the absoute minimum. I own smaller units and they don't clean as much, plus you have to waste at least three time as much time to clean.

Offline suicidal_orange

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16854 on: Fri, 04 February 2022, 10:27:59 »
Trying to replace ibm model rubber dome keypad with mechanical keypad I had lying around. When removing the mechanical keypad from its previous circuit, I believe I might have broken it. Please help.
The ribbon cable looks fine, only thing that looks possibly damaged is the socket - did the front snap off?  As long as something holds the ribbon against the connector it will work so doesn't look fatal.

If I'm missing something obvious feel free to point it out, I'm pretty much one eyed at the moment so it's very possible
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Offline faye_valentine

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16855 on: Tue, 08 February 2022, 04:36:07 »
Trying to replace ibm model rubber dome keypad with mechanical keypad I had lying around. When removing the mechanical keypad from its previous circuit, I believe I might have broken it. Please help.(
The ribbon cable looks fine, only thing that looks possibly damaged is the socket - did the front snap off?  As long as something holds the ribbon against the connector it will work so doesn't look fatal.

If I'm missing something obvious feel free to point it out, I'm pretty much one eyed at the moment so it's very possible
Show Image


I assumed I could pull the ribbon, with the socket at the end, directly out of the board. I accidentally pulled the ribbon directly out of the socket itself. Now it's a "naked" ribbon and I'm not sure if I can put it back into a socket, but was afraid to test in case I damaged the ribbon (further). Let me know if you need clarification.

Offline user 18

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16856 on: Fri, 11 February 2022, 11:28:23 »
Trying to replace ibm model rubber dome keypad with mechanical keypad I had lying around. When removing the mechanical keypad from its previous circuit, I believe I might have broken it. Please help.(
The ribbon cable looks fine, only thing that looks possibly damaged is the socket - did the front snap off?  As long as something holds the ribbon against the connector it will work so doesn't look fatal.

If I'm missing something obvious feel free to point it out, I'm pretty much one eyed at the moment so it's very possible
Show Image


I assumed I could pull the ribbon, with the socket at the end, directly out of the board. I accidentally pulled the ribbon directly out of the socket itself. Now it's a "naked" ribbon and I'm not sure if I can put it back into a socket, but was afraid to test in case I damaged the ribbon (further). Let me know if you need clarification.

I know that many ribbon cables don't actually have connectors on them, just exposed conductors on the plastic membrane. The socket is soldered to the board. I'm 90% sure that the IBM controllers fall into that category, but don't have one in front of me to double-check.

E: for reference, here's what a model M controller looks like without the ribbon cables inserted. From what I can tell, this is the same socket as your board, which just expects the 'naked' ribbon to be inserted. It doesn't look to me like anything is damaged in your photo.
« Last Edit: Fri, 11 February 2022, 11:34:58 by user 18 »
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Offline faye_valentine

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16857 on: Tue, 22 February 2022, 18:00:50 »
Thanks, I'll check the link until further notice.

Offline faye_valentine

  • Posts: 4
Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16858 on: Mon, 07 March 2022, 08:00:09 »
Trying to replace ibm model rubber dome keypad with mechanical keypad I had lying around. When removing the mechanical keypad from its previous circuit, I believe I might have broken it. Please help.(
The ribbon cable looks fine, only thing that looks possibly damaged is the socket - did the front snap off?  As long as something holds the ribbon against the connector it will work so doesn't look fatal.

If I'm missing something obvious feel free to point it out, I'm pretty much one eyed at the moment so it's very possible
Show Image


I assumed I could pull the ribbon, with the socket at the end, directly out of the board. I accidentally pulled the ribbon directly out of the socket itself. Now it's a "naked" ribbon and I'm not sure if I can put it back into a socket, but was afraid to test in case I damaged the ribbon (further). Let me know if you need clarification.

I know that many ribbon cables don't actually have connectors on them, just exposed conductors on the plastic membrane. The socket is soldered to the board. I'm 90% sure that the IBM controllers fall into that category, but don't have one in front of me to double-check.

E: for reference, here's what a model M controller looks like without the ribbon cables inserted. From what I can tell, this is the same socket as your board, which just expects the 'naked' ribbon to be inserted. It doesn't look to me like anything is damaged in your photo.

well it appears as though the "working" ibm model m has stopped working
i'm noticing that a ps2 connecter requires 6 metal pins and a large rectangular pin, whereas my current "working" ibm has only 4.
currently not sure as to whether these pins accidentally came off or if I received the ibm this way
pics related
i might still try conducting the keypad swap given i can't get the keyboard working soon just as a fun project

Offline fohat.digs

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16859 on: Tue, 08 March 2022, 09:10:17 »

ps2 connecter requires 6 metal pins and a large rectangular pin, whereas my current "working" ibm has only 4


The socket does not "require" 6 pins, it accommodates them. There are only 4 that are live. The ones marked "2" and "6" on the diagram aren't doing anything.

The result is that the war, while it is of course overwhelmingly a fight for Ukrainian freedom, has also, weirdly, become a front in America’s cultural and political wars.
There’s growing speculation about what will happen inside Russia if the invasion of Ukraine ends in outright failure.
But you also have to wonder how the US right will handle the revelation that sometimes tough guys finish last.
- Paul Krugman NYT 2022-09-12

Offline lowercaselena

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  • Location: France
Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16860 on: Sat, 19 March 2022, 16:28:35 »
hello, i was wondering if anyone here had experience getting acrylic cut for a custom case/plate. im looking for pointer on how to design the files, places i could contact in europe/france etc

Offline PinkRoy

  • Posts: 1
Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16861 on: Mon, 21 March 2022, 11:22:07 »
New to geekhack and way too young for a message board like this so sorry if I'm messing anything up. What kind of key rollover do BTC dome with slider boards have? I wanna know if I can use a BTC board for games that require a lot of key combinations at once. Thanks.

Offline Magnusmaster

  • Posts: 1
Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16862 on: Sun, 24 April 2022, 17:29:50 »
I have a mechanical keyboard that claims to have MX-Compatible Blue switches and the N key is sometimes unresponsive. Blowing the switch makes it more responsive for a while, but the problem persists, so I'm considering changing the switch. However, the keyboard doesn't seem to have standard MX-Compatible Blue switches. The switches have a hole on top to let light go through. Can anyone identify which switch this? Will a standard MX-Compatible Blue switch fit?

Offline Chewable Food

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16863 on: Tue, 26 April 2022, 18:23:34 »
I murdered the bootloader of an ATmega32U4 based keyboard (BM980).  There is no ISP header as far as I can tell.  Am I missing something or is there no way to restore the bootloader?  Game over?

Offline suicidal_orange

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16864 on: Wed, 27 April 2022, 15:28:28 »
I murdered the bootloader of an ATmega32U4 based keyboard (BM980).  There is no ISP header as far as I can tell.  Am I missing something or is there no way to restore the bootloader?  Game over?
The header is just a convenient place to connect all the pins you need in one place, as long as you connect to them somewhere you can use ISP to fix it.

I can't find any firmware for this board to confirm which pins are used in the matrix but there's a good chance MOSI MISO and SCK are connected to some switches or diodes and if there's a button to enter flashing mode that will be connected to RESET and GND.  Hopefully that just leaves 5V which is conveniently located on a pin on the corner of the chip if it's not attached to something LED related) so you could carefully solder a wire directly to the pin.

285532-0
Note the dot in the corner to locate pin 1.

If you have firmware and need more help please post a link to it :)
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Offline fr3

  • Posts: 2
Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16865 on: Mon, 16 May 2022, 15:00:10 »
Would it be okay to lube switches ~8 months in advance with something like tribosys 3204 before putting it in a board? 

Offline AnonAustria13

  • Posts: 1
Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16866 on: Mon, 30 May 2022, 17:40:52 »
Q: Is there a specific reason for having numblock and nav-cluster to the right where it interferes with mouse movement instead of placing it to the left in a custom layout?

Offline fohat.digs

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16867 on: Mon, 30 May 2022, 18:31:03 »
There are left-handed keyboards.
The result is that the war, while it is of course overwhelmingly a fight for Ukrainian freedom, has also, weirdly, become a front in America’s cultural and political wars.
There’s growing speculation about what will happen inside Russia if the invasion of Ukraine ends in outright failure.
But you also have to wonder how the US right will handle the revelation that sometimes tough guys finish last.
- Paul Krugman NYT 2022-09-12

Offline geoken

  • Posts: 3
Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16868 on: Thu, 02 June 2022, 19:32:09 »
Anybody know the specs for the screw on an FC660C that screws from the bottom case to the top case (the really long one). I lost it and need to order a screw that will fit.

Offline ideus

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16869 on: Mon, 06 June 2022, 17:39:53 »
Is there a source to get a couple of 7G/6Gv2 Steelseries BAE's top stem guides?
« Last Edit: Mon, 06 June 2022, 17:47:38 by ideus »

Offline Morbii

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16870 on: Fri, 02 September 2022, 17:06:13 »
I’m new to the hobby and was wondering if there’s a place to find out what is and isn’t safe to stick in a keyboard?

I’ve seen videos with masking tape on the literal PCB / on chips, cotton balls, foams, etc.  Is plastic safe (like bubble wrap)?  Are there any unsafe items that might seem like a good idea, etc.

More importantly physical safety and fire safety, but electronics safety too.

Offline user 18

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16871 on: Sat, 03 September 2022, 17:45:48 »
I’m new to the hobby and was wondering if there’s a place to find out what is and isn’t safe to stick in a keyboard?

I’ve seen videos with masking tape on the literal PCB / on chips, cotton balls, foams, etc.  Is plastic safe (like bubble wrap)?  Are there any unsafe items that might seem like a good idea, etc.

More importantly physical safety and fire safety, but electronics safety too.

The biggest electronics/fire safety risk would be introducing a conductive material that causes a short circuit. Most of these tapes, foams, plastics, etc. that you see used for sound/vibration damping are non-conductive materials.

Usually the electronic components of a keyboard don't generate a ton of heat when operating normally, but it might in principle be possible to generate enough heat with a well-insulated controller or powerful LED to cause some trouble as well. Any component that consumes power (essentially any chip or discrete circuit element such as a diode/LED or resistor) should have some allowance made for cooling, although this could be as little as putting it in thermal contact with the PCB, and assuming heat will transfer into the copper ground plane.

In terms of physical safety, all the normal standards would apply, I guess. Don't ingest lube, try not to inhale flux vapour, don't hold the soldering iron too close to the tip, watch out for sharp edges on machined parts.

If you can post a bit more about what you're trying to accomplish, someone might be able to offer more specific advice.
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Offline Morbii

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16872 on: Sat, 03 September 2022, 22:49:40 »
Thank you!  I think that's a good head start for me just in terms of some basics. 

The thing that triggered this question is that I'm going to start trying to modify a high profile Drop CTRL to see what I can do with it.  I realize that there probably won't be too much I can do with it due to its limitations (plate mount stabs, integrated plate, no daughterboard or gaskets, no foam, wild pinging sounds, not a lot of room to maneuver in the case, etc), but I think it will be a good start just to play around.    I've already replaced the stabs with everglides, lubed them with 205g0 and the wire with grease, and used the Holee mod (no clips to snip).  Sounds better than it did, but I want to try to fiddle around a bit inside the case too.

I'm a fast learner, so beyond that I'm just trying to throw myself into the hobby in whichever ways I can.  I recently picked up my first soldering iron and some DIY kits, but I want to focus on a few more basics before I dive fully in, and probably want to either take a soldering class or find a good tutorial (I ordered a Hakko FX888 station).  I also have several boards to play with, from GMMK Pros, to Keychrons, some much more mainstream boards, and a Bubble 75 (with two PCBs, one solderable and one not - an end goal will be soldering the Bubble75 PCB when I am at least a little skilled at it).

My biggest issue was wondering about conductivity and which materials were/weren't safe.  I never would have thought of taping up a whole side of a PCB with masking tape, but I saw it in a video from someone that appeared very knowledgeable, so it invited questions.






Offline user 18

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Re: Simple Questions, Simple Answers (FAQ in the OP)
« Reply #16873 on: Sun, 04 September 2022, 10:25:12 »
Sounds awesome! Fortunately, keyswitches are just about the easiest thing in the world to solder -- large through-hole components that tend to stay in place even before soldering (either with PCB-mount legs, or from being held by a plate).

If you're looking at tape, keep in mind that most tapes will leave residue if used over long periods of time. You could also take a look around at what types of foam various other keyboards or kits have used, to get an idea for what's popular.
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