[Coco] Using a CoCo2 keyboard in a CoCo1

Jayeson Lee-Steere cocolistemail at titaniumstudios.com
Sat Sep 10 22:51:33 EDT 2016

A quick update on the reverse keyboard adapter (old keyboard socket strip
to newer Coco flat flex). The 0.8mm board from OSHPark is too thick - does
not work at all. 0.6mm board would go in there, but will definitely stretch
the contacts so it will no longer work well with the original keyboard flat

If it were possible to get a short length of flat flex ribbon, that could
be made to work. But I can't find anything available in the ancient 2.54mm
pitch. It was a bit of a surprise to even be able to get the connector new.

I would say the best solution to use an old keyboard with a newer Coco is
to remove the flat flex connector from the Coco main board and replace it
with a pin header.

- Jayeson

On Tue, Aug 9, 2016 at 12:28 PM, Jayeson Lee-Steere <
cocolistemail at titaniumstudios.com> wrote:

> Sanding might work. It is not something I'd expect to have much success
> with, but some folks are wizards with such things.
> I found the datasheet for the connector and it is specified for up to
> 0.38mm. I did fit something 0.7mm in there and it will fit, but does indeed
> stretch the contacts so they have less pressure when going back to the
> original 0.35mm flat flex. If it involves running the risk of having to
> replace the connector, perhaps it would be better to just solder a pin
> header onto the main board in the first place.
> - Jayeson
> On Tue, Aug 9, 2016 at 7:18 AM, Barry Nelson <barry.nelson at amobiledevice.
> com> wrote:
>> I wonder if the board could be sanded thinner where it plugs into the
>> connector?
>> > I also made up this experiment for a reverse connector to use old
>> keyboards
>> > with newer Cocos. OSH Park's 0.8mm thick boards are probably too thick
>> to
>> > work, but I ordered some anyway to see.
>> >
>> > https://oshpark.com/shared_projects/oUGZhWO8
>> >
>> > - Jayeson
>> --
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