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f1fco

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Joined: 18/03/2012
Location: France
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Posted: 10:08am 28 Jun 2014

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I want to use the CGKEYCHIP1 - PS/2 Keyboard Chip
like this, here : http://www.circuitgizmos.com/products/cgkeychip1/cgkeychip1. shtml

but HOW to make a keyboard ? with custom keys
I want to write my own labels under the caps... to custom a little keyboard (10 to 20 keys)

can you help me to found this keys ?

thank you

Pierre, from Nimes, south of France

73s de F1FCO

f1fco

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Joined: 18/03/2012
Location: France
Posts: 155

Posted: 10:10am 28 Jun 2014

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the site is here :
http://www.circuitgizmos.com/products/cgkeychip1/cgkeychip1. shtml

73s de F1FCO

f1fco

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Joined: 18/03/2012
Location: France
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Posted: 10:11am 28 Jun 2014

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http://www.circuitgizmos.com/products/cgkeychip1/cgkeychip1. shtml

73s de F1FCO

f1fco

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Posted: 10:12am 28 Jun 2014

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cgkeychip1. shtml !!!
erase the space between dot and shtml

73s de F1FCO

BobD

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Joined: 07/12/2011
Location: Australia
Posts: 935

Posted: 10:31am 28 Jun 2014

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Pierre
Use the hyperlink button to add links. It is the 4th button from the left on the toolbar.
Bob
http://www.circuitgizmos.com/products/cgkeychip1/cgkeychip1. shtml

Frank N. Furter
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Joined: 28/05/2012
Location: Germany
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Posted: 07:15am 29 Jun 2014

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Hi Pierre,

take a look on my Keyboardemulator

It works very fine on PS/2 and you can generate ANY keystroke!!!

(There is a HT82K628A from HOLTEK available which can only PS/2 which doesn't need an quartz... - it's a very simple circuit!!!)

Frank

Frank N. Furter
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Posted: 07:33pm 29 Jun 2014

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I used in the past this Button:

You can open it and you can put any (laser) printed paper (with transparent foil above) instead of the original plate in it.

Frank

Grogster

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Joined: 31/12/2012
Location: New Zealand
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Posted: 07:58pm 29 Jun 2014

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The CG keyboard chip is for use with the MaxiMite series of computers - it will not function as a keyboard if you connect it to a PC or other full-size computer.

CG has tested that, and a PC will not respond to this chip as a keyboard, as it is not a true keyboard controller, but an emulator.

This works fine on the MM, but just don't expect to be able to plug this into a PC...

@ Frank-N-Furter - I have the 628A's, that don't need the crystal, and these are the ones I could not make work.

I might have to try again....

Smoke makes things work. When the smoke gets out, it stops!

Frank N. Furter
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Joined: 28/05/2012
Location: Germany
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Posted: 08:17pm 29 Jun 2014

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Hi Grogster,

I have no experience with the HT82K628A, I used only the HT82K629A (and this one works very fine).

Did you used the correct value for the oscillator resistor (58,3KOhm - I think the timing of the oscillator is very important) and did you used a FERRIT on VDD? I would try to connect the resistor on the �C-side of the FERRIT OR on the power side...

I hadn't any problems with the HT82K629A on USB AND PS/2...

Frank

Grogster

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Posted: 08:57pm 29 Jun 2014

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Hi there.

I tried to get as close to the 58k3 as possible, but perhaps I should have used a resistor and a trimmer, and set that to exactly 58k3 before putting the chip in....(i did not do THAT)

I might have another play with these chips, as I have nine more....

Yes, I did use a ferrite bead on VCC as per the datasheet.

EDIT: Just had a quick look at my old attempt - I used a 56k and 2k2 metal-film 1% resitor in series, giving a total of 58k2, which I thought would have been close enough - perhaps not? I will see if I can find the old prototype PCB, and I could always hack an extra 100-ohm 1% resistor in there, and see if we get a response.Edited by Grogster 2014-07-01

Smoke makes things work. When the smoke gets out, it stops!

f1fco

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Joined: 18/03/2012
Location: France
Posts: 155

Posted: 10:19am 30 Jun 2014

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thank you Frank for photo and link of the buttons, but item is out of stock

I seach for custom buttom to use it with a maximite via a CG keyboard chip, not with a PC !!!

Pierre

73s de F1FCO

Grogster

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Posted: 01:33pm 30 Jun 2014

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Lovely - that's nice to know.

At least it should work fine then.

Smoke makes things work. When the smoke gets out, it stops!

Frank N. Furter
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Joined: 28/05/2012
Location: Germany
Posts: 936

Posted: 07:18pm 30 Jun 2014

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Hi Pierre,

you should get the Buttons from:

REICHELT

MOUSER

or

DIGIKEY

Take a search to "Schurter" "1241.1100.7093" on the WEB

Frank

f1fco

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Joined: 18/03/2012
Location: France
Posts: 155

Posted: 08:30pm 07 Jul 2014

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thank you for answer
also I search for "old" DIGITAST keys
at low prices...

73s from F1FCO, Pierre from Nimes, south of France

73s de F1FCO

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