deskthority

that's sounds like the black rubber foil has deformed when you putting the keyboard together and it interferes keystrokes. suggest you to take the keyboard apart to make sure parts are put up correctly.

I've got the pcb file from a guy "cerement".

anthonymak wrote: ↑

28 Dec 2020, 12:19

nice work, I use a new pcb for my m0110, the pcb uses a pro micro as controller but I am going to remap the pcb with a 32u4 feather. and is now waiting for wire and plugs to do the remap.

nice work, I use a new pcb for my m0110, the pcb uses a pro micro as controller but I am going to remap the pcb with a 32u4 feather. and is now waiting for wire and plugs to do the remap.

try this before you decide to replace the microswitch.

https://www.youtube.com/watch?v=eDoXMJyimDU

I would like to see more options for alps switches restoration. There are always better ideas.

very interesting project.

I have a question for everybody - I built one of these and had my F working for about 2 minutes, now it's not registering any keypresses at all anymore - even in the keypress util, it's got a threshold of 96 and all keys are "never pressed". Are there any debugging ideas anybody may have? I've chec...

you need this or compatible

looks like its faulty trace but I also come across a water damaged model m with its rubber layer swelled and causes the same problem.

here are some variety of super flat head m2 screws from aliexpress https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20201102222526&SearchText=super+flat+head+m2+screw I managed to find some nylon locknuts in M2 size, which I think will be more long term than regular nuts, but they're a ...

use this.

I guess screw tension has minimal impact on membrane performance. The internal black rubber layer has already serve as tension buffer unless you ditch the rubber. I have done bolt or screw mod to several model m and none of them has screws falling out even without the rubber layer. I would say screw...

Thought I'd share some progress pics. Everything's routed, checked dimensions, and it just needs more polish (and maybe a little more design rules checking?) before I attempt to send out the order ^^ I also added some screen print art because a board this big felt like an empty canvas. I think it g...

download and install SwitchHitter. It will show scan code for every key press.

The one I am using is 7mm overall thickness (including solder mask and copper trace) When I order I said 8mm but turns our 7mm but it works perfect.

Permatex Dielectric Grease

any update on the electric paint?

please refer to the pics below and hope this help

Just finished a usb conversion to a TRS-80 model 4P with teensy++2.0 First, thanks very much for updating this thread! Second, I have a Tandy 1000 keyboard and I'd like to make it work with a Teensy. Can you please provide a bit more detail into how you wired up the Teensy and how you wired up the ...

Just finished a usb conversion to a TRS-80 model 4P with teensy++2.0

I was thinking that capacitive sensing might be used to upgrade the ibm model m to nkey rollover. someone who owns a bolt modded model m could experiment with sticking kapton tape over a membrane contact (like how the varmilo switch is done), then using a capacitive controller to detect if the key ...

neat, one suggestion, wish that the components are soldered to the other side, the through hole components can be seen.

xwhatsit installed with 3.96mm pitch headers. this is on a model M

unless your f122 controller has malfunction, I prefer to use soarer converter instead of using xwhatsit. but if you use xwhatsit, better use 3.96mm pitch male and female header for the installation. will show photos on what I did to my model m with xwhatsit and headers.

I prefer to retain the original coil cable and use an external soarer converter like this one. it has locking cap/numlock/sclock leds

simply make a soarer converter with the specific features.

wcass wrote: ↑

30 Jan 2020, 02:02

The crystal footprint is 7x4.1mm. Example: ABLS7M2-16.000MHZ-D-2Y-T

I tried 5032 16Mhz crystal with the original xwhatsit model f controller and it works fine without any noticeable issue. the original crystal spec is just a little bit big.

the adafruit 32u4 breakout board is good if you need a lot of IO. some people flash leonardo bootloader with the breakout board but the original adafruit 32u4 breakout board bootloader is more logical,

here is a photo which shows wiring to a teensy2.0

from top to bottom, only 1, 3, 4 and 5 are used and they belongs to the lower row of pin on the blue socket.

hope this help.

this kind of mild oxidation inside the membrane is normal for a keyboard over several years and should not cause any problem. I would suggest you clean the contact area that plug into the FPC socket with mild alcohol or pencil eraser(not the one for erasing ink). strong alcohol will remove the silve...