"Professional" Keyboard TI99 Packaging Project

Any discussions related to the creation of new hardware or software for the ZX80 or ZX81
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gammaray
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"Professional" Keyboard TI99 Packaging Project

Post by gammaray » Sun Jan 07, 2018 1:22 am

So far this is the best keyboard for TXZ81000 (TS1000/ZX81) conversion since most of important keys layout is arrayed on 8x5.

It's dirty and one key is stuck from some contaminent...
IMG_20180106_152123.jpg
IMG_20180106_152123.jpg (2.31 MiB) Viewed 281 times
Dirty inside...
IMG_20180106_152032.jpg
IMG_20180106_152032.jpg (2.91 MiB) Viewed 281 times
Bottom tray...
IMG_20180106_152053.jpg
IMG_20180106_152053.jpg (4.87 MiB) Viewed 281 times
Keyboard and power supply...
IMG_20180106_165135.jpg
IMG_20180106_165135.jpg (2.89 MiB) Viewed 281 times
This is a HI TEC keyboard http://www.mainbyte.com/ti99/console/alpha_lock.html
hi tec IMG_1380-tny.jpg
hi tec IMG_1380-tny.jpg (49.56 KiB) Viewed 281 times
Need to clean. What solvent would work on plastic, aluminum and copper chemically neutral?
Will use a Waterpik to clean tight spots with a controllable jet of fluid.
Finish what you start. Truth is over the mountaintop or six feet under.
4 x TS1000, 2 x TS1500 , 2 x timex 2040 printer, 1/2 x timex 2020 cassette deck, ZXPAND+AY, ZeddyNET, ZXBlast..., unfinished Spectrum...Still no life!

McKlaud
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Re: "Professional" Keyboard TI99 Packaging Project

Post by McKlaud » Sun Jan 07, 2018 1:36 am

IPA is goo. But be very careful with any printed labels. They will come off if the paint is alcohol based.
Claudius
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gammaray
Posts: 374
Joined: Sun Apr 17, 2016 2:44 am
Location: Texas

Re: "Professional" Keyboard TI99 Packaging Project

Post by gammaray » Sun Jan 07, 2018 3:06 am

If IPA is Isopropyl Alcohol commonly found at drug stores in various concentrations,

that is how I dissolved the aluminized contacts on my mother's TS1500 keyboard membrane. She relegated it to the closet until SellMyRetro began selling replacements for the Spectrum which could be used as a replacement. That is when my covetous nature convinced her she no longer needed it :twisted:

Looking for another substitute unless no one thinks that anything on the TI99/4A keyboard would be aluminized...
Finish what you start. Truth is over the mountaintop or six feet under.
4 x TS1000, 2 x TS1500 , 2 x timex 2040 printer, 1/2 x timex 2020 cassette deck, ZXPAND+AY, ZeddyNET, ZXBlast..., unfinished Spectrum...Still no life!

axtelle
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Re: "Professional" Keyboard TI99 Packaging Project

Post by axtelle » Sun Jan 07, 2018 3:05 pm


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gammaray
Posts: 374
Joined: Sun Apr 17, 2016 2:44 am
Location: Texas

Re: "Professional" Keyboard TI99 Packaging Project

Post by gammaray » Sun Jan 07, 2018 8:23 pm

Probably will make a power cord as it is 4 pronged and none on eBay except bundled with a computer.

Using some liquid RTV silicone and making a mold using male recessed socket from OEM power circuit, aplug could be made. Mostly because case would need modification to use more modern equivalent.

Then it is time to determine if a new PCB for power and/or other things is necessary...

What voltage max. current scheme is already being put out...I'll get my voltmeter...
Finish what you start. Truth is over the mountaintop or six feet under.
4 x TS1000, 2 x TS1500 , 2 x timex 2040 printer, 1/2 x timex 2020 cassette deck, ZXPAND+AY, ZeddyNET, ZXBlast..., unfinished Spectrum...Still no life!

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gammaray
Posts: 374
Joined: Sun Apr 17, 2016 2:44 am
Location: Texas

Re: "Professional" Keyboard TI99 Packaging Project

Post by gammaray » Mon Jan 08, 2018 10:11 pm

Thanks mooredan for sending me down this road!
Finish what you start. Truth is over the mountaintop or six feet under.
4 x TS1000, 2 x TS1500 , 2 x timex 2040 printer, 1/2 x timex 2020 cassette deck, ZXPAND+AY, ZeddyNET, ZXBlast..., unfinished Spectrum...Still no life!

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