Hacker News: proee

New comment by proee in "Solar and batteries can power the world"

proee — Fri, 03 Apr 2026 16:14:03 +0000

EVs are essentially a giant battery on wheels. Seems there is a good opportunity to configure them as bidirectional power banks for your local grid. You could rewire all parking slots to have a plugin that acts as a bidirectional power station. Imaging how much power could be moved around with such a grid! This would require a major investment in power transmission layouts, but a city full of batteries on wheels.

California has registered around 1M Teslas alone. So this is like having a 1Mx80kwh = 80GWh battery at your service. As a reference, the largest solar + storage facility in California is around 3.2 GWh.

New comment by proee in "Artemis II Launch Day Updates"

proee — Wed, 01 Apr 2026 18:36:03 +0000

There is a LOC (Loss of Crew) number that is typically calculated for these missions. I'm curious what that is? Early Apollo missions were on the order of 4%.

New comment by proee in "The Micron Store: A Semiconductor Brand Strategy That Would Break the Internet"

proee — Mon, 30 Mar 2026 17:14:49 +0000

This is a brilliant take because Micron has traditionally struggled with their products being seen as a commodity. There is good value in trying to differential MU as some kind of magic memory company that is better than others (despite it following the same specs).

For the sake of bringing this to different cities and regions, maybe you could do the same thing but with a "Memory Mobile (MM)" that travels around the country like the Oscar Meyer wiener truck.

To motivate visitors, you could offer one "Willy-Wonka" ticket each year, that gets a huge cash price or something cool. Tickets are handed out upon visiting the MM, and at the end of the year, ticket number is announced. Hold on to your ticket kids!

New comment by proee in "Honda is killing its EVs"

proee — Tue, 17 Mar 2026 21:03:14 +0000

Could it be that the EVs they were planning were just out of touch with what the market wants? Their zero vehicles look butt-ugly in my opinion. They look like concept cars that are great for show, but no serious buyer would consider them for a daily driver.

New comment by proee in "AirPods Max 2"

proee — Mon, 16 Mar 2026 17:59:02 +0000

I bought the AirPods Max 1 but had to return them because they felt like a vice and were too heavy. I ended up going with the Sony wh-1000xm5, which are much lighter. My only complaint on the Sony is the earcups are not deep enough for my big ears.

New comment by proee in "Ask HN: Why can't we just make more RAM?"

proee — Sat, 14 Mar 2026 01:32:19 +0000

Outside of fabrication, memory chips also require some very fancy high speed testers that need specialized ICs which are most likely back ordered.

New comment by proee in "NASA targets Artemis II crewed moon mission for April 1 launch"

proee — Fri, 13 Mar 2026 18:38:10 +0000

Imagine riding in a vehicle that has been tested zero times. I would be terrified. Best of luck to the team.

New comment by proee in "PCB devboard the size of a USB-C plug"

proee — Mon, 09 Mar 2026 15:42:25 +0000

Just be aware of dorking around with exposed hardware connected to your $2K MBP. If you end up shorting out your DIY circuit, or have external power supplies connected to your dev board, it's very possible you can fry your laptop.

Best practice is to have a completely opto-isolated USB connection between your dev system and test hardware. You can buy a USB opto-isolated system for like $100 that will tell you downstream currents and isolate your hardware.

New comment by proee in "Math Notepad"

proee — Fri, 06 Mar 2026 22:34:16 +0000

Great tool. Reminds me of Instacalc, which has bee around forever.

https://instacalc.com/

New comment by proee in "TSA leaves passenger needing surgery after illegally forcing her through scanner"

proee — Fri, 06 Mar 2026 21:55:47 +0000

I brought a $14k oscilloscope through TSA once. They flagged the unit and proceeded to inspect it, lifting it by the edges of the plastic front cover and trying to remove it while held in mid-air. I kind of freaked out and said "stop" because the oscilloscope was about to take a free-fall. They were not happy that I spoke up, but luckily it averted a crisis.

New comment by proee in "China tests first megawatt-class flying wind turbine"

proee — Fri, 20 Feb 2026 16:21:42 +0000

This seems like a really cool idea. I wonder if the US is working on something similar and how practical this really is?

New comment by proee in "Overall, the colorectal cancer story is encouraging"

proee — Thu, 19 Feb 2026 20:37:17 +0000

Wow, I had no idea there is a 15X increase for endurance athletes. Make me want to dial down the running a bit, which make you wonder where the sweet spot is for distance training.

New comment by proee in "Show HN: Strava for Claude Code"

proee — Wed, 18 Feb 2026 20:49:53 +0000

You may need to be careful using "Strava" on your website as it's a trademarked name.

Cool idea though.

New comment by proee in "Ask HN: Are there examples of 3D printing data onto physical surfaces?"

proee — Wed, 18 Feb 2026 17:19:30 +0000

For long term data storage, you might consider using a UV laser to etch inside a crystal cube. This should last for thousands of years I would think. You could also read back the bits using optics which is non destructive.

New comment by proee in "Jony Ive Designed Ferrari Luce EV Interior"

proee — Mon, 09 Feb 2026 20:07:29 +0000

The corner radius on those displays it getting out of hand.

New comment by proee in "Extremophile molds are invading art museums"

proee — Wed, 28 Jan 2026 00:29:29 +0000

I've had to deal with mold more than I care to discuss.

The key is to keep humidity down (relative to temperature). There is a concept of "Days till Mold" growth. Once you're past this number all bets are off.

Here is a chart that shows Days to growth. If museums can stay in the "no risk" zone then artifacts should be good. If they fall outside that zone, then artifacts are at risk.

https://energyhandyman.com/knowledge-library/mold-chart-for-...

Example: At 85'F and 84% Humidity, it will take 7 days for mold to grow into your nostrils and reach your brain.

New comment by proee in "Amazon closing its Fresh and Go stores"

proee — Tue, 27 Jan 2026 16:32:30 +0000

Has anyone used their go stores? I'm curious how the experience felt from a consumer standpoint. Do you feel welcomed or more like a thief?

I remember WAY back in the day when Arby's implemented touch screen ordering (on CRTs!) and it was a very quirky process. An Arby's employee would sit behind the counter and stare at you while you spent 5 minutes poking a CRT display. Very slow and very impersonal. They discontinued them in a short period of time.

New comment by proee in "I built a light that reacts to radio waves [video]"

proee — Fri, 23 Jan 2026 15:24:42 +0000

How much did that sheet metal frame cost you from PCBWay? Thanks for sharing.

New comment by proee in "A Year of 3D Printing"

proee — Thu, 22 Jan 2026 15:02:55 +0000

Seems there is a market for a truly biodegradable print material, if even for doing a prototype before committing to a full plastic print. Or a real recyclable method to take old prints and reuse the material again.

New comment by proee in "Ask HN: Burned out from tech, what else is there?"

proee — Tue, 20 Jan 2026 18:52:31 +0000

Combine what you know with development and apply it to art. There's a lot of magic and opportunities at the intersection of two major domains. Artists would love to know how to use programming to bring their ideas to life. Programmer would love to come up with creative artistic ideas, but they are limited to the world they know - code.

If you become medium/ok at both domains, you become a bit of a renaissance person, and hopefully excited to work on ideas and projects that bring you much joy.

Edit: Replace Art with whatever second domain might interest you.