deskthority

So I was able to get this far after I realized that the keyboard needed more than 5v (should have known!). It's still just those two keys but I haven't really had any time to tinker with it more. I did have a chance to try out LCtrl and it did indeed output 0x1d and 0x9d. When I first plug it in, th...

Only two keys on the board produce any sort of activity in hid_listen or Saleae logic: RShift and LCtrl

RShift (press)


RShift (release)

DEAR LORD. WE HAVE SIGNS OF LIFE!!!

Three other jumpers are missing as well (J05, J06, J09). However, these look like they were intentionally left disconnected from the factory rather than cut after the fact (since they appear to have never been populated in the first place). Is it safe to assume that these probably are not the proble...

Some new developments in the case have unfolded in these past couple hours. I was reviewing the crime scene photos and found something that I had overlooked initially. It looks to me like one of the jumpers on the board had met an untimely fate and was either snipped or accidentally severed. I must ...

The NeXT case is the last unsolved mystery in my department. Our team here is great but frankly we don't have the manpower (nor the brainpower) to identify these suspects. Here's the lineup: https://i.imgur.com/ZzcuVcw.jpg If you know the names of these persons of interest, please come forward with ...

Again I'm shifting my focus to capacitors to solve this case. Here's the line up: https://i.imgur.com/lA2AsrK.jpg If you know the names of any of these suspects, please let me know: Tres Tres https://i.imgur.com/nqjRmzJ.jpg Randy Red-text https://i.imgur.com/T7mFXMm.jpg Cylindrical Cindy https://i.i...

Enough is enough. Today marks the beginning of my war on capacitors. Just to recap, the Alloy Link case is a an unsolved death with few suspects to date. Upon to the scene, investigators found the victim unresponsive with no signs of life. The case immediately became suspicious due to the young age ...

Findecanor wrote: ↑How do you know the keyboard does not work? What did you test it with?

I tested with Hasu's firmware flashed to a teensy
https://github.com/tmk/tmk_keyboard/tre ... er/usb_usb

I got a really good deal on a "non-functional" NeXT keyboard. The previous owner had done some modifications that left the PCB in really poor shape. I played around with this board the other night and I kept getting excited because I thought I had found the (singular) problem causing the keyboard no...

Continuation of an old thread I started. Hopefully in a more appropriate place. :lol: https://deskthority.net/keyboards-f2/c-itoh-alps-buckling-spring-board-possible-to-convert-t18133.html I have this Alps buckling spring keyboard from a CIT324 Video Display Terminal. https://i.imgur.com/QZrWHuu.jpg...

Opps, I missed your pic of the numbering. here is my corrected pin out with my reasons in "{}" 1. Case GND/Shield. {connects to Ground Plane} 2. Reset {link not populated so optinal reset line} 3. VCC {Suppression Cap} 4. GND {center pin of regulator(assuming 7805)} 5. Clock/Data {goes off to hex b...

Working on a new theory that I'm a moron and the 6P6C cable is crossing over the wires... stay tuned!

There is a small probability that under the white 6-pin plastic connector the PCB has the pins marked with letters. Perhaps if you can unbend the pins just about 1mm and look between the connector and the PCB to see if there are any letters? (if you can do it without breaking something). No such lu...

There is a small probability that under the white 6-pin plastic connector the PCB has the pins marked with letters. Perhaps if you can unbend the pins just about 1mm and look between the connector and the PCB to see if there are any letters? (if you can do it without breaking something). No such lu...

Oh so not XT its firmware AT. that should help have you had any luck yet? If not, post some pic's of the back of the pcb to show traces. Still in the same pickle I'm afraid. Here are some shots of the back: https://i.imgur.com/JRUBNpC.jpg https://i.imgur.com/RFscfJQ.jpg https://i.imgur.com/rN30Jx3....

Hi guys, the other day I saw my coworkers rollermouse and immediately fell in love with the idea. I would really like a pointing device like this; where you don’t have to take your hands off the keyboard. One of the things that I do not like about the rollermouse is the size. My work keyboard is a R...

Here are some photos of the pinout: https://i.imgur.com/HioCqWf.jpg https://i.imgur.com/kYtuyxi.jpg And some more photos of the PCB: https://i.imgur.com/uvgAh0e.jpg https://i.imgur.com/2FqxNMN.jpg https://i.imgur.com/W8pIHo4.jpg https://i.imgur.com/9wSEjGI.jpg I believe the pinout is like this: 6: ?...

Very cool stuff, I feel like I'm learning a lot!

One question:

zool wrote: ↑ (may need to be pulled high or low on start up.)

How would one go about pulling a pin high or low on startup?

I'm unfortunately still not able to get much of a reading with the logic analyzer. I tried setting up a trigger to start capturing when I type on some keys but could not get it to pick up anything. However, I am able to set off the trigger if I start start the logic analyzer and *then* plug in the 5...

I'm a bit of a noob so sorry if this is obvious. What is this guy? Funny coincidence: Bought this from an individual on eBay located in the Czech Republic and it looks like the board was manufactured in Waukegan, IL where I work. https://i.imgur.com/UL1xKX8.jpg https://i.imgur.com/z01iPWO.jpg

davkol wrote: ↑Well, you could replace the switches (and PCB while at it).

Plan A: Dunk the whole thing in lube
Plan B: Replace switches and pcb
Plan C: Leave it in my closet indefinitely

I'm surprised that Mitsumi miniature switches have made it to bottom ♯2. There are some people who genuinely like them, although there's some binding and it's nearly impossible to open the switch for lubrication. Is there any hope for these switches? I have a really cool board but I refuse to use i...

I maked this

just try reading a logic high to start with just to make sure your setup is working. Yeah I think the sniffer I picked up may have been a good option a few years back when it was new and more supported but it doesn’t seem to play nicely with any of the software I tried (OLS and Pulseview). I found ...

Was I the lucky recipient of the switches from this board? What do you have planned for it next?

Good news! I got the logic analyzer. I successfully wired it up to my keyboard in true frankenstein fashion and the software seems to work (by "work" I mean that smoke has not come out of my PC yet). https://i.imgur.com/EIBLkp9.jpg https://i.imgur.com/sdo9xbN.png Bad news! I realized that I have no...

Green-squid, green plate!!