Search found 419 matches
- Sun Dec 11, 2022 12:18 pm
- Forum: Hardware
- Topic: Keyboard from where
- Replies: 59
- Views: 13747
Re: Keyboard from where
More stupid questions that someone can probably answer off the top of their head. How long does a QL keyboard key have to be present to register and how long is a scan line on for? All this is so I can get a simple serial or SPI link from the above keyboard to QL.
- Sat Dec 10, 2022 11:32 pm
- Forum: General QL Chat
- Topic: New Forum
- Replies: 109
- Views: 27885
Re: New Forum
Can you try this test again please? Oh dear! it seems the cpu usage is still high on the board index page but not the thread of this message or the Edit Post creation pages. It is still sitting at 25%+ on the board index page and it can hit 40% by moving the mouse particularly over underlined objec...
- Sat Dec 10, 2022 4:50 pm
- Forum: General QL Chat
- Topic: New Forum
- Replies: 109
- Views: 27885
Re: New Forum
Can you try this test again please? The cpu load has disappeared. :) You can use the CPU monitor to see the difference. On Suse Linux I just press CTRL & ESC to pop it up. Previously your site used +25% continuously now it is down to flashing between 6% and nothing when in focus like other site...
- Fri Dec 09, 2022 5:09 pm
- Forum: Hardware
- Topic: USB Keyboard IF
- Replies: 38
- Views: 11400
Re: USB Keyboard IF
No, Spectratur translates key strokes, not characters. So when pressing the three keys on the USB keyboard, three distinct key events are generated. Each of those gets translated into the closing of the appropriate switch in the MT88xx switch matrix. Thanks for explaining I haven't looked into how ...
- Thu Dec 08, 2022 9:02 pm
- Forum: Hardware
- Topic: USB Keyboard IF
- Replies: 38
- Views: 11400
- Thu Dec 08, 2022 8:41 pm
- Forum: Hardware
- Topic: QL Power Supply Primary Winding
- Replies: 8
- Views: 1170
Re: QL Power Supply Primary Winding
The meter would be applying a constant DC voltage. The component tester (using ATmega328) would, I assume, be repeatedly applying a slow varying (or step) voltage to judge inductance, so the extra resistance value is from reactance. At 50Hz the reactance would add considerably to the effective resi...
- Thu Dec 08, 2022 2:22 pm
- Forum: Hardware
- Topic: USB Keyboard IF
- Replies: 38
- Views: 11400
- Mon Dec 05, 2022 9:17 pm
- Forum: Hardware
- Topic: QL Power Supply Primary Winding
- Replies: 8
- Views: 1170
Re: QL Power Supply Primary Winding
Why does your inductance meter say 93.5R? Just curious why DC resistance would be different between meters.
- Sun Dec 04, 2022 11:51 am
- Forum: Hardware
- Topic: Keyboard from where
- Replies: 59
- Views: 13747
Re: Keyboard from where
You mean something like this? Sort of but not so complex. I didn't consider the length of a key press, then went in a big loop thinking about key on key off status ending up deciding it was all irrelevant. :roll: All I have to do is place what ever key is received by my PIC on one scan of the QL ke...
- Sat Dec 03, 2022 10:41 am
- Forum: General QL Chat
- Topic: New Forum
- Replies: 109
- Views: 27885
Re: New Forum
I just noticed if I open another tab in Firefox so the QL forum is not the focus the cpu load disappears if that helps identify the massive cpu load used by your not so green site despite the colour.