fisian

Rolling shutter is quite nice and used in different scenarios to increase framerate.

For example to extract sound from just a camera [1].

Additionally, while not directly related to the rolling shutter effect [2] uses a technique to increase the framerate of the Raspi Camera by 10x or more, but reducing image resolution.

[1] https://people.csail.mit.edu/mrub/VisualMic/

[2] https://github.com/Hermann-SW/fork-raspiraw

I got a (seemingly?) impossible problem:

- roman numerals must multiply to 35

- my chess move is: Rf7+

- Atomic numbers of elements must add up to 200

So I need V, VII and Rf7+ in there but then the atomic numbers are way past 200 already.

I also had to figure out how to enter chess notation. As it turns out you have to add "x" after the piece if you want to capture or "+" suffix for check.

It just depends how you measure "closest".

Similarly, Mount Everest is the highest mountain (above MSL), however Mauna Kea is higher if measured by prominance (starting from its base which is under water).

I also like to use ctrl+K to search from the address bar.

It's nice because usually I use ctrl+L to type in the address bar and that's a similar shortcut for times when my search looks like a URL.

I'm on so many different machines (mostly some embedded stuff/RasPis that need linux) that I ignore all these bad defaults.

The only thing I find unbearable is vimdiff colors, that have the SAME or very similar foreground and background so it's impossible to read. (I don't remember, but believe it's just on some distros)

> Disallowed characters

> < > ” / \ | ? * Never allowed

A friend once somehow crated a file called <HTML>.

I don't know how, but he also couldn't delete or do anything with it.

Smallstep uses ProxyCommand [0]. Not sure how Tailscale does it.

0: https://smallstep.com/docs/ssh/how-it-works

Someone made a camera that has this "feature": https://philippschmitt.com/archive/2018/work/camera-restrict...

I used `protoc --encode` (and `--decode`) to do something similar. Didn't send it over HTTP but piped it to MQTT or serial ports.

Unfortunately, those options are poorly documented, so it took me some time to figure that out.

"Differential flatness" is synonymous to "flatness".

The concept is a bit comparable to inverse kinematics. With inverse kinematics you compute, e.g. the joint angles of a robot arm given its endeffector pose.

While with differential flatness you use the pose trajectory and its derivatives (i.e. how the pose changes over time) to calculate the state trajectory (joint angles, speeds and accelerations for the robot arm example).

Flatness[1] based control is pretty neat.

Basically, you can define a trajectory (that is differentiable n-times) and then calculate the state of the system from that.

In this case, given the trajectory they could compute the speed, acceleration, jerk and yaw+rate for the tailsitter ahead of time using the model.

[1] https://en.wikipedia.org/wiki/Flatness_(systems_theory)

Confusingly, Fennec F-Droid is Fenix.

In the description on the F-Droid page it says "Fennec F-Droid is based on the latest Firefox release (codenamed Fenix).".

You can block many websites cookie banners by using ublock origin and enable some of the Annoyances filter lists in the settings.

I use the "AdGuard annoyances" and "easylist cookie" lists and that blocks many cookie banners.

Also, "I don't care about cookies" was recently bought by a company, which could mean bad things for the extension in the future.

I agree.

I feel like there should be a lightweight way to use SSH certificates, so you could use it independently or on top of Tailscale. Like a server (CA), client and daemon on your machines that should be reachable via SSH that handles short lived certs and authentication of clients. But I'm not aware of anything like that.

I have used Teleport before but it seemed not that great for machines not publicly reachable, because then all the traffic goes through a proxy.

There is a fork by the community "I still don't care about cookies" (note the "still") that should avoid any evil stuff Avast would do to the original extension.

This reminds me of innovation management [1], but done by individuals (founders) instead of existing organisations. The wikipedia article links some more techniques, including some of which are in the post like brainstorming.

[1] https://en.wikipedia.org/wiki/Innovation_management

There are competitors in EU and US: Skydio and Parrot are the first I can think of, although their products cost more and aren't as consumer focused.

For me it wasn't about being next to a road but just to compensate for a bad microphone.

After using RNNoise directly, now I use EasyEffects with a preset I found here: https://gist.github.com/MateusRodCosta/a10225eb132cdcb97d7c4...

It reduces the background noise to be barely noticeable.

It is based on the Odroid N2+, which can definitely replace a Pi.

I used some in the past and they are powerful alternatives.

The only downside is worse software support (the official images have only older linux versions), but there are alternative images. I had good experience using Armbian images instead of the official ones.

Related to applying a non-linear function to randomly distributed points is the Unscented Transform[0]. It approximates how the function changes the distribution's mean and standard deviation by selecting several points, applying the function to these points and calculating the transformed mean and standard deviation from the transformed points.

[0]: https://en.wikipedia.org/wiki/Unscented_transform

Some time ago I was at a talk about verifying different MQTT brokers so they fulfill the spec. They presented several inconsistencies they found (in OSS brokers) and submitted fixes for.

I looked up if there's some info online and found that paper (unfortunately paywalled): https://graz.pure.elsevier.com/en/publications/learning-base...

I found that conclusion weirdly dismissive, given how detailed the carotenes and their effect and regional preferences were described. It doesn't do the article justice to summarize it like that.

SymPy Gamma, for example: https://www.sympygamma.com/input/?i=diff%28a**%285*x**2%29%2...

The blog the article is on is from teleport (goteleport.com), which you might want to take a look at. I haven't used it myself but it could be used for this task.

To add to that, until now there is the ÖBB Österreichcard which allows infinite train rides on all ÖBB trains. It's about 2000€. Now it will be replaced by this Klimaticket.

There is also this wikimedia illustration of the history of distributions.

https://upload.wikimedia.org/wikipedia/commons/1/1b/Linux_Di...

Also available as HTML:

https://learn.adacore.com/courses/Ada_For_The_CPP_Java_Devel...

KeePass uses .Net/mono to run on all platforms, while KeePassXC has a more "native" feel.

KeePass has many plugins available, which allow extending its behavior. KeePassXC doesn't have plugins, but has many quality of live things built-in.

I used both, but currently use KeePassXC. I really love its ssh key integration.