Search found 177 matches

by Ruptor
Fri Sep 25, 2020 2:22 pm
Forum: Hardware
Topic: Noddy Keyboard Almost
Replies: 25
Views: 1549

Re: Noddy Keyboard Almost

That switch requires 150g of force to actuate. The commonest actuation force is 45g, and 65g is considered ‘stiff’... Yes that is why I arranged the switch footprint with large pads so it can take 6 mm switches or others like this diagonally between pads. EziUsin-6-6-5-Silent-Botton-PCB-Keyboard-Li...
by Ruptor
Fri Sep 25, 2020 2:00 pm
Forum: General QL Chat
Topic: Faster CPU plug in extensions, How?
Replies: 27
Views: 1184

Re: Faster CPU plug in extensions, How?

Dave wrote:it’s easier to accomplish the goal by making a small expansion card with thru-connector and disabling the internal CPU like the SGC does.
Perhaps remove the 68008 to save power as well?
by Ruptor
Thu Sep 24, 2020 4:29 pm
Forum: Hardware
Topic: Noddy Keyboard Almost
Replies: 25
Views: 1549

Re: Noddy Keyboard Almost

no - it was about an interface board he's made to go into the keyboard tail sockets and has I think a 20 pin connector with an IDC female end on it Oh! thanks, the PCB plug. Probably Derek would like it but it is too neat & fancy for me. :lol: I don't think a straight one piece PCB would fit a ...
by Ruptor
Thu Sep 24, 2020 4:25 pm
Forum: Hardware
Topic: Noddy Keyboard Almost
Replies: 25
Views: 1549

Re: Noddy Keyboard Almost

Derek_Stewart wrote:There does not seem to be a Schematic symbol file.
The switch symbol is in the standard library as Switch:SW_Push. Do you want me to send you my schematic?
Derek_Stewart wrote:Do you know the manufacturer of the switch?
Nope. But it is probably a Chinese copy of an Omron B3FS-4.
by Ruptor
Thu Sep 24, 2020 2:23 pm
Forum: Hardware
Topic: Noddy Keyboard Almost
Replies: 25
Views: 1549

Re: Noddy Keyboard Almost

I haven't yet created any footprints, but I believe from watching a video on the matter on You Tube, that it lives in a different library. In order to export a PCB design to use on another system, you need to supply the library as well as any PCB stuff that uses it. The files and library management...
by Ruptor
Thu Sep 24, 2020 11:23 am
Forum: Hardware
Topic: Noddy Keyboard Almost
Replies: 25
Views: 1549

Re: Noddy Keyboard Almost

Tetroid might even be persuaded to release his adaptor board as a separate product, then you could make use of that... I think you mean I could use a serial keyboard with an adapter but this thread is about replacing the membrane with hardware switches. One could use the QL serial port because Jan ...
by Ruptor
Thu Sep 24, 2020 12:02 am
Forum: Hardware
Topic: Noddy Keyboard Almost
Replies: 25
Views: 1549

Re: Noddy Keyboard Almost

I don't find this Kicad very intuitive but I have made some progress and created foot prints in a net list pulled in to the PCB as a right mess as attached. :o :D The Footprint is missing from the zip file. I can't understand that since it is the file in my custom.pretty folder that is pulled in to ...
by Ruptor
Wed Sep 23, 2020 2:48 pm
Forum: Hardware
Topic: Noddy Keyboard Almost
Replies: 25
Views: 1549

Re: Noddy Keyboard Almost

I have managed to make a footprint in Kicad for the surface mount switch so it can take both 12 mm and 6 mm switches for flexibility as attached. I exported it so you should be able to import it if I did it correctly. I must be looking at the wrong documentation because the text and icons don't matc...
by Ruptor
Sun Sep 20, 2020 11:54 pm
Forum: Hardware
Topic: Noddy Keyboard Almost
Replies: 25
Views: 1549

Re: Noddy Keyboard Almost

Hi Derek I am not ignoring you I just haven't had a working computer. :( I installed Tumbleweed because it said it had Kcad 5 and everything went to pot on two computers. :roll: It turns out I could have upgraded to Suse 15.2. Everything is still not sorted out but I can at least type messages. I di...
by Ruptor
Tue Sep 15, 2020 11:22 am
Forum: General QL Chat
Topic: Faster CPU plug in extensions, How?
Replies: 27
Views: 1184

Re: Faster CPU plug in extensions, How?

Personally, I like assembly code, but I lack the creativity to perform it correctly.But I am prepared to have a go, do not expect anything soon, as I am only beginning in ARM assembly programming. These days optimising compilers are just as good as assembler so it is best to learn how to tweak the ...