291–300 of 382 posts
I've been so happy to see what Framework has been doing lately, and really want to support them, but I already have a desktop as my primary computer and two Thinkpads that are already set up nicely, but that I rarely use. I moved from 15" laptops to 14" when Lenovo added the numpad on the larger variant, and 14" is about as small as I want to go. I kind of want to buy a framework though, just to support them? But I h…
Earlier quoted context omitted.
I've noticed that I seem to miskey my unlock password immediately after resuming from sleep way more often than when I use that password at other times, or when using an external keyboard (Lenovo T480). I always suspected that something was wonky, but a weird debounce bug would totally explain it, especially as I tend to type that password very quickly.
The scrambling is easy to see once you know it's happening: press k and l simultaneously on your Thinkpad keyboard. It'll always come out "lk" unless you deliberately separate them. Testing was done [0], but it's not written in an easy-to-understand way. As a summary, Thinkpad keys are scrambled within 15-23 ms. Usually, humans ascribe scrambled letters to their own mistakes, but this time it's the keyboard's fault.…
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Yes. Essentially, when you see an edge, update the state immediately but have a guard interval before allowing further state changes. Intuitively, this means register the event when you see the first edge, not once the bounces have finished. For an example of incorrect denouncing, see most articles on denouncing (the hackaday article comes to mind), and the QMK firmware last time I checked (most keyboard set the deno…
> Yes. Essentially, when you see an edge, update the state immediately but have a guard interval before allowing further state changes. Isn’t that ultimately what capacitor + Schmitt buffer debouncers does? The only difference is that this would be in software?
A Schmitt buffer isn’t necessary when using polled GPIO with a microcontroller.
An equivalent accurate discrete logic circuit would be a latching circuit with a gated input pulse on state change corresponding to the denounce time, which is overkill for simple button handling.
I've been so happy to see what Framework has been doing lately, and really want to support them, but I already have a desktop as my primary computer and two Thinkpads that are already set up nicely, but that I rarely use. I moved from 15" laptops to 14" when Lenovo added the numpad on the larger variant, and 14" is about as small as I want to go. I kind of want to buy a framework though, just to support them? But I h…
Then go for the Framework one.
- AMD processor options
- Keyboards with a trackpoint - decades of ThinkPaddery have conditioned me; I regularly use a Dell touchpad-equipped laptop & contemporary Mac laptop and still pine for a trackpoint. Very personal preference, I know, but hopefully the Framework Marketplace comes to provide this.
- Proper 14" HiDPI screen
- Long battery life under Linux
I'm impressed with what they've been able to do and really hope they become sustainably successful!
I've been so happy to see what Framework has been doing lately, and really want to support them, but I already have a desktop as my primary computer and two Thinkpads that are already set up nicely, but that I rarely use. I moved from 15" laptops to 14" when Lenovo added the numpad on the larger variant, and 14" is about as small as I want to go. I kind of want to buy a framework though, just to support them? But I h…
From reports I've read the Framework laptop has poor build quality. This comment from here actually: https://news.ycombinator.com/item?id=29807585 I'd like to support their cause, but like you, I have way too many machines that already work well enough, that I can't justify another purchase unless it would offer a substantial improvement over my current setup (old ThinkPads). Plus I really can't function without a Tr…
Can’t comment on the trackpoint, which is something I’ve never personally liked, but if that’s a deal breaker, you’ll probably have to have a Thinkpad. But I’ve been very pleased with the build quality of my Framework.
I checked the keyboard debouncing logic [0] and it was fine. Some keyboards from other manufacturers, notably Lenovo Thinkpads, have absurd debouncing algorithms that scramble keys or add delays, so it's good to see Framework has a correct solution. [0]: https://github.com/FrameworkComputer/EmbeddedController/blob...
I've noticed that I seem to miskey my unlock password immediately after resuming from sleep way more often than when I use that password at other times, or when using an external keyboard (Lenovo T480). I always suspected that something was wonky, but a weird debounce bug would totally explain it, especially as I tend to type that password very quickly.
On top of that, I didn’t know what the issue was and it drove me nuts until I figured it out. Left a very bad taste in my mouth for Lenovo/ThinkPad despite all the love they receive.
Things I'm hoping to see in time for a Framework machine to become my next laptop: - AMD processor options - Keyboards with a trackpoint - decades of ThinkPaddery have conditioned me; I regularly use a Dell touchpad-equipped laptop & contemporary Mac laptop and still pine for a trackpoint. Very personal preference, I know, but hopefully the Framework Marketplace comes to provide this. - Proper 14" HiDPI screen - Long…
Great! So how’s that RYF certification coming?
Earlier quoted context omitted.
> Yes. Essentially, when you see an edge, update the state immediately but have a guard interval before allowing further state changes. Isn’t that ultimately what capacitor + Schmitt buffer debouncers does? The only difference is that this would be in software?
A capacitor plus pull up resistor will add an RC time constant delay on switch release, and for it to be effective at denouncing it needs to be on the order of 10ms. A software solution has zero delay in both cases. A Schmitt buffer isn’t necessary when using polled GPIO with a microcontroller. An equivalent accurate discrete logic circuit would be a latching circuit with a gated input pulse on state change correspon…
Since you said 'denounce' a couple times I'm not sure if this is some jargon I've not been aware of or just auto-correct.