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geekhack Community => Keyboards => Topic started by: OldIsNew on Sat, 29 July 2017, 15:34:58

Title: Fujitsu Leaf Spring, Teensy
Post by: OldIsNew on Sat, 29 July 2017, 15:34:58

I'd been curious about the Fujitsu leaf spring switch and came across a  Fujitsu N860-2500-T111 board with 3rd gen leaf springs. It has an 8 pin connector and I don't know what protocol it uses so I traced out the rows and columns and just soldered directly to the IC pads and wired up the Teensy.



[attach=1]         [attach=2]          [attach=3]         



The switches are clicky linear and feel pretty nice.  I'd be curious to compare them to the 1st gen switches.

 [attach=5]      [attach=6]            [attach=4]

Title: Re: Fujitsu Leaf Spring, Teensy
Post by: snuffleez on Mon, 18 September 2017, 21:17:31

Hello!

Mind if I ask what kind of software you've got on the teensy? I've got the matrix all figured out for this board, but it doesn't seem to want to cooperate with soarer's controller.

Thanks in advance

Title: Re: Fujitsu Leaf Spring, Teensy
Post by: OldIsNew on Mon, 18 September 2017, 22:22:09

Quote from: snuffleez on Mon, 18 September 2017, 21:17:31

Mind if I ask what kind of software you've got on the teensy?

I'm using Arduino C code that I wrote/modified, based off a tutorial by mepler ( http://www.instructables.com/id/RaspTI-Convert-a-Vintage-Computer-TI-994A-into/ ). It  works (I'm typing on the board now) but is quite unpolished. I wanted to write my own software for the board as part of the hobby. While I'd be happy to share the code, you would be better off using TMK as per matt3o's tutorial ( https://deskthority.net/workshop-f7/how-to-build-your-very-own-keyboard-firmware-t7177.html ) if you want  "professional" firmware.

I posted some additional info, including some re-wiring I ended up doing, here:

https://deskthority.net/workshop-f7/fujitsu-3rd-gen-leafspring-teensy-wired-t17087.html

Title: Re: Fujitsu Leaf Spring, Teensy
Post by: snuffleez on Mon, 18 September 2017, 22:37:02

Thanks for the info -- I hadn't seen that other thread. Can I take a look at the arduino code? I'm not the software type  :confused:

Title: Re: Fujitsu Leaf Spring, Teensy
Post by: OldIsNew on Mon, 18 September 2017, 22:55:35

Quote from: snuffleez on Mon, 18 September 2017, 22:37:02

Can I take a look at the arduino code?

Sure happy to post - if I can figure out how. I'm going to see if posting as a text link works. Also this code is messy and inelegant and would need to be modified for the rows/columns/pins as you are using them. I keep meaning to clean it up but haven't yet since I didn't figure anyone else would be looking at it!  BTW I used a Teensy++ 2.0

[attachurl=1]