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bruno_rzn

Re:Ask HN: What are you working on? (May 2025) on Monday May 26, 2025 @06:44AM (#44096050)
Thanks a lot!

Yes, the first idea that came to mind (after music/light controllers) was indeed car user interfaces.

Maybe some cool interfaces for home automation too, and I can also imagine controllers for factories or workshops—pretty much anywhere with lots of parameters to control.

But really, if you have other scenarios in mind, please share, I’m very interested, as you can imagine ;)

Re:Ask HN: What are you working on? (May 2025) on Sunday May 25, 2025 @05:29PM (#44091330)
I’m working on Karl [https://www.veloursdevices.com], a MIDI controller. It’s quite unique because it features 32 encoders over a display, which allows you to have a fully customizable interface—like a touchscreen, but with actual knobs you can touch.

I have a software engineering background, and I’ve been working on this for nearly 3 years now! I used to play with the Electra One controller before, but having the encoders over the display is really something I’ve always wanted.

I presented Karl last month at Superbooth (a fair in Berlin) and got really good feedback. After 6 months of beta and 2 years of touring with it myself, the first batch will be dispatched in August, and this is quite exciting!

Show HN: Biq Blue – Destroy Your Google BigQuery Costs

https://biq.blue/

Hi!I've been working on Biq Blue, a tool engineered to analyze your Google BigQuery tables, storage, and requests with the goal of drastically reducing your costs.Currently in early free beta, Biq Blue has already demonstrated its effectiveness on some big data sets.Essentially, it's a server that connects to your BigQuery database via the gcloud CLI, conducts analyses, and opens an HTTP port...

( Read More... | 1 comment | 4 points | on HN )
I'm building a MIDI controller that has knobs (rotary encoders) displayed on top of a full hd display. I looked everywhere for something similar and I'm pretty sure that it does not exist. Did my first gig with the first prototype. It's basically a mix between the Electra One, the MP Midi Controller and the Stream Deck.

I'm working on this for months now, and I had to learn how to use tools like Fusion 360 and Kicad for this, which is incredibly fun!

I'm looking for a name for this product, current propositions are "a screen with holes" and "écran total" but ideas are welcome :)

Ask HN: Could we make a decision based on a random measured value?

Let's have a set of two actions { goLeftOpenDoor, goRightRiseFlag }, and a deterministic algorithm to pick one action given a completely random input.Alice and Bob are both aware of this algorithm, but they are very far from each other.Alice and Bob each receives one particle from an entangled pair (A,B).Alice makes a measurement on her particle, and so does Bob.They now both also share a...

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Re:Ask HN: Can a tautology be serious? on Monday August 27, 2018 @06:36AM (#17850572)
Thank you again for this answer.

What I really don't understand here is the transition between :

1 - You can read Kaya's identity as per capita CO2 emissions from human sources is equal to per capita GDP times energy use per GDP unit times CO2 emissions per energy unit production.

and

2 - So, you have three ways of reducing per capita CO2 emissions...

What is the logic behind this ? I mean, if you pose [ CO2 = CO2/pop * pop ] (simplified, but indeed always true by definition), how can you say that one way of reducing the CO2 emissions is reducing the [pop] term ?

I don't know if I'm clear enough...

Re:Ask HN: Can a tautology be serious? on Thursday August 23, 2018 @07:15PM (#17831379)
Could you generalize to other identities ?

Or, on the contrary, give an example of such equation with some actual empirical value ?

Ask HN: Can a tautology be serious?

Let's write a tautology : A = A Let's rewrite it : A = A/B * BNow, I often see people (in economics, mostly) do this little trick :ΔA = Δ(A/B * B) Δ * ln(A) = Δ * ln(A/B) + Δ * ln(B)Then, they will show that, empirically, A/B has always been constant (more or less), thus, if you want to increase A, you just have to work on increasing B.Can this kind of equation actually say something about...

( Read More... | 5 comments | on HN )
Re:Ask HN: How will the GDPR law handle tracking cookies? on Thursday March 01, 2018 @06:41AM (#16491226)
Thanks a lot. Very interesting link.

Same question: this iFrame would be used to store information related to the user across websites, it kind of works like a cross-domain-cookie-replacement : could GDPR make these kind of tooling illegal ? Should we display a very specific popup to tell the user what those scripts really do ? And have an opt-out option ?

Re:Ask HN: How will the GDPR law handle tracking cookies? on Wednesday February 28, 2018 @02:34PM (#16485996)
I mean, since most of Tag Managers solutions let 3rd Parties set cookies, ads companies such as Criteo (for instance) must use them to trace users across several websites, no ?

What kind of other solution do you think about ?