Re: Lisa->USB keyboard adapter

A PS/2 or USB to Lisa keyboard adapter (as in to use a PS/2 or USB keyboard on a Lisa) is actually something some friends of mine have discussed doing before. Lisas are really cool machines, but foam and foil KeyTronic keyboards aren't known for their longevity, and while it's possible to make new foam pads, there are a couple of ASICs on the keyboard that are not replaceable. On the other hand, I rebuilt a Lisa keyboard using EPDM rubber weatherstrip foam (stuff that's used for the seal at the bottom of garage doors, designed to be impervious to chemicals, bad weather, etc.) for the contact pads which I hope will hold up a bit better than the original open-cell foam did, but I'll have to get back to you in another 15-20 years on that.

On Wednesday, September 3, 2014 11:00:40 PM UTC-4, Tom Stepleton wrote:
>
> Hi again,
>
> Answering some of the questions posed here:
>
> 1. I don't think the Arduino sketch posed here will be much help for early
> Mac keyboards. Based on the information described at
> http://www.mac.linux-m68k.org/devel/plushw.php , the Mac used a different
> and slightly more complicated protocol, as well as an extra clock line (had
> to use that fourth wire for something, I guess). However, there's no reason
> I can see why an Arduino couldn't do the job.
>
> 2. Here's a link to an ADB->USB converter done via Arduino:
>
> http://blog.jomon-lab.com/arduino-projects/adb-to-usb-adapter-using-arduino-keyboard-function
> It's based on this work using something called a Teensy:
> http://geekhack.org/index.php?topic=14290.msg277407#msg277407
> Bonus: here's how to hook up your non-ADB NeXT keyboard:
> https://learn.adafruit.com/usb-next-keyboard-with-arduino-micro/overview
>
> 3. Can you use a USB keyboard with a Lisa (i.e. do the opposite of what's
> done here)? I don't see any reason why not, but you'll have to make it your
> own project. If you want to use an Arduino, you will probably need an
> external USB host shield or an Arduino Due.
>
> --Tom
>
> On Saturday, August 30, 2014 2:29:47 PM UTC-4, Natalia Portillo wrote:
>>
>> A RJ11 mac128/512k/512ke/plus keyboard. I happen to have two untested of
>> them.
>>
>> ADB thru arduino sounds interesting, have a link?
>>
>> Sent from my iPhone
>>
>> > On 30/8/2014, at 9:34, Simon Claessen <sim..._at_email.domain.hidden> wrote:
>> >
>> > a pre-adb mac keyboard? or do you meen a pre-usb adb mac keyboard?
>> > there is a keyspan for that, but people have managed to make a arduino
>> sketch for adb keyboards iirc.
>> >
>> > simon
>> >
>> >> On 30-08-14 05:08, Natalia Portillo wrote:
>> >> Would it be compatible with a preADB mac keyb?
>> >>
>> >> Unfortunately I don't have an arduino to test xD
>> >>
>> >> Sent from my iPhone
>> >>
>> >> On 30/8/2014, at 1:40, Tom Stepleton <step..._at_email.domain.hidden
>> >> <mailto:step..._at_email.domain.hidden>> wrote:
>> >>
>> >>> Ever wanted to use your Lisa keyboard to type on a modern computer?
>> >>>
>> >>> Probably not, but if you have, now you can. Thanks to Patrick
>> >>> Schäfer's excellent documentation of his Lisa Keyboard Tester
>> >>> (http://john.ccac.rwth-aachen.de:8000/patrick/KBDtester.htm) it was
>> >>> straightforward to make an adaptor from one of the USB HID-device
>> >>> capable Arduino devices (in my case, Arduino Micro
>> >>> <http://arduino.cc/en/Main/arduinoBoardMicro>). The only other
>> >>> components you need are a 1/4" phone plug socket and a 10kohm
>> resistor.
>> >>>
>> >>> Software for the Arduino is attached. A picture of my setup:
>> >>>
>> >>> <
>> https://lh6.googleusercontent.com/-W85DjEH8Z28/U_jYrlLj2RI/AAAAAAAAPGs/TbVHETnWz40/s1600/IMG_20140823_140228.jpg>
>>
>> >>>
>> >>> The software is released into the public domain in accordance with
>> the
>> >>> statement appended below:
>> >>>
>> >>> --Tom
>> >>>
>> >>> *This is free and unencumbered software released into the public
>> domain.*
>> >>> *
>> >>> *
>> >>> *Anyone is free to copy, modify, publish, use, compile, sell, or*
>> >>> *distribute this software, either in source code form or as a
>> compiled*
>> >>> *binary, for any purpose, commercial or non-commercial, and by any*
>> >>> *means.*
>> >>> *
>> >>> *
>> >>> *In jurisdictions that recognize copyright laws, the author or
>> authors*
>> >>> *of this software dedicate any and all copyright interest in the*
>> >>> *software to the public domain. We make this dedication for the
>> benefit*
>> >>> *of the public at large and to the detriment of our heirs and*
>> >>> *successors. We intend this dedication to be an overt act of*
>> >>> *relinquishment in perpetuity of all present and future rights to
>> this*
>> >>> *software under copyright law.*
>> >>> *
>> >>> *
>> >>> *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,*
>> >>> *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF*
>> >>> *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
>> NONINFRINGEMENT.*
>> >>> *IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR*
>> >>> *OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
>> OTHERWISE,*
>> >>> *ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
>> OR*
>> >>> *OTHER DEALINGS IN THE SOFTWARE.*
>> >>> *
>> >>> *
>> >>> *For more information, please refer to <http://unlicense.org/>*
>> >>>
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>> >>> <keymap.h>
>> >>> <lisa_keyboard.ino>
>> >>
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>> >
>> > --
>> > Met vriendelijke Groet,
>> >
>> > Simon Claessen
>> > drukknop.nl
>> >
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