bacon_waffle (u/bacon_waffle)

bacon_waffle commented on USB-C for Lightning iPhones obsoless.com/products/iph... · Posted by u/colinprince

colinprince · a month ago

His video is great

https://www.youtube.com/watch?v=KUXQzVD1TdI

Thanks for the link - PCBWay recently offered me sponsorship, and this video has provided some good inspiration to make use of it :)

bacon_waffle commented on Electric cars produce less brake dust pollution than combustion-engine cars modernengineeringmarvels.... · Posted by u/tzs

brtkwr · a month ago

Just normal driving, it wasn’t quite so bad on our previous car which was a Nissan Leaf (with 30kWh battery) but our current Kia Niro just has a lot bigger batter (64kWh) and it is a lot heavier I suppose, the tyres just don’t seem to last as long. I’m pretty sure I’m using summer tyres all year round (I live in the UK) this was recommended by the dealer

bacon_waffle · a month ago

The additional battery weight would be something under 250kg (having handled a few Leaf battery packs), and wikipedia says the Niro EV is about 1700kg

bacon_waffle commented on Touching the back wall of the Apple store blog.lauramichet.com/touc... · Posted by u/nivethan

Gigachad · 2 months ago

Almost none of those things have ads on the iPhone. All of them function reliably.

bacon_waffle · 2 months ago

I regularly notice bugs when using iOS Mail; one that springs to mind would display one email's body with the header info from another email, it seems to have recently been fixed but was easily reproducible for weeks if not months.

bacon_waffle commented on Ask HN: Who wants to be hired? (June 2025) · Posted by u/whoishiring

bacon_waffle · 3 months ago

Location: South Island, Aotearoa/New Zealand

Remote: Yes

Willing to relocate: No

Technologies: Rust, electronics, insulation

Résumé/CV: https://ianrees.nz/tech/about.html

Email: code atsign ianrees dot en ze(e|d)

Microchip: please hire me to work on the Rust HAL for your ATSAM chips, which I currently volunteer the odd hour or two to help maintain. Between Rust bringing robust modular software in to embedded, and companies like Adafruit pumping out ATSAM boards, there's huge potential in this space.

https://github.com/atsamd-rs/atsamd

bacon_waffle commented on Show HN: Rotary Phone Dial Linux Kernel Driver gitlab.com/sephalon/rotar... · Posted by u/sephalon

bacon_waffle · 3 months ago

Fun historical twist: New Zealand rotary phones used a reversed mapping between digit and pulse count - here the number of pulses was 10-digit.

bacon_waffle commented on The Solid-State Shift: Reinventing the Transformer for Modern Grids powermag.com/the-solid-st... · Posted by u/JumpCrisscross

hristov · 5 months ago

This is very interesting and cannot happen fast enough, considering the current worldwide transformer shortage.

I have a question for people more familiar with these. What exactly happens at the isolation stage. They say it includes a high frequency transformer (HFT). But its input and out put is DC. And classic transformers operate on AC. So in order to get the transformer working, one would have to chop up the incoming dc power into a square wave or a sine wave. But what transistors can you use to do this, considering you are dealing both with very high power and very high frequencies?

bacon_waffle · 5 months ago

There are techniques for "stack"ing transistors so that the individual swtiching devices see potentials that are within spec and much lower than the voltage switched by the overall circuit.

bacon_waffle commented on Ask HN: Predictions for 2025? · Posted by u/uncomplexity_

esafak · 8 months ago

https://theonion.com/fuck-everything-were-doing-five-blades-...

bacon_waffle · 8 months ago

"The 8th blade sends an electronic pulse to the center of the brain, which destroys the part of the brain responsible for hair growth and 4 other nonessential functions"

https://www.youtube.com/watch?v=UjAZnGeBcgg

bacon_waffle commented on Deploying Rust in existing firmware codebases security.googleblog.com/2... · Posted by u/pjmlp

jsheard · a year ago

I was a bit taken aback when I realized that Embassy's low-level PAC crates expose all of the devices raw registers through "safe" interfaces though. I'm pretty sure that letting you configure DMA engines arbitrarily at any time is not in the spirit of safe Rust. AFAIK their high-level HAL crates do aim to be properly safe but their PAC approach makes me nervous.

https://docs.embassy.dev/rp-pac/git/default/dma/struct.Chann...

bacon_waffle · a year ago

Usually the HAL is between the main firmware and the PAC, so whether the PAC methods are marked as unsafe could almost be considered an implementation detail.

But yes, there has been a lot of discussion around how to handle DMA peripherals - the embedded_dma crate offers some abstractions that I've found handy.

bacon_waffle commented on 'Virtually intact' wreck believed to be Royal Navy warship torpedoed in WWI theguardian.com/uk-news/a... · Posted by u/SonOfKyuss

kyteland · a year ago

I believe you have those inverted. Bronze has tin and brass has zinc.

bacon_waffle · a year ago

Whoops, yes you're correct. Serves me right for looking at some SEO spam link!

Main point was that bronze is much more common in marine applications than brass - I wouldn't be surprised to learn there's been an error upstream as well.

bacon_waffle commented on 'Virtually intact' wreck believed to be Royal Navy warship torpedoed in WWI theguardian.com/uk-news/a... · Posted by u/SonOfKyuss

CobrastanJorji · a year ago

> "All the brass work on the wreck, like the portholes and the breaches for the deck guns, are all still shiny..."

I'm not a materials science person, but doesn't brass degrade fairly quickly in saltwater? Googling around, I'm discovering "Naval Brass," which is an alloy particularly resistant to dezincification in salt water, but it doesn't sound like it was in use in 1914. But I'm also reading about some brass artifacts from centuries ago that survived relatively well underwater. Wonder if somebody who knows about this stuff could clue me in to how these things do so well underwater for so long?

bacon_waffle · a year ago

I believe bronze (copper + zinc) is a lot more common in marine applications than brass (copper + tin)

u/bacon_waffle

KarmaCake day1221December 14, 2017

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Electronics/software engineer in Dunedin, New Zealand.

https://github.com/ianrrees

https://ianrees.nz/tech

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