@wirehead

131 Followers
94 Following
872 Posts

I fear neither scaling mountains nor software. Oh, and frying bacon while shirtless. I don't fear that either.

I do not speak for my employer.

http://pronoun.is/he

Show threadwirehead4d ago
@Ashedryden cosigned.
wireheadMar 19
I had a dream that somehow involved the nonexistent sequels to the 80s scifi dud Explorers (it became a trilogy) and a rocket powered by expired shredded cheese from the grocery store.
wireheadFeb 8
David Penfold Feb 6

I thought I'd check out the winter olympics by watching some ski jumping.

Then I ended up watching the bobsleigh, downhill, freestyle skiing and luge as well.

It's a slippery slope.

Show threadwireheadFeb 7

@jmeowmeow Also, auto electronics chips are generally made to a higher spec (AEC-Q) and generally come with a bunch of extra accessory requirements including having a longer manufacturing lifespan. This means that not all parts are made auto-grade and there was probably a lot more reason to bodge together older parts for the first set of LED upgrades.

At least right now, there's a wide selection of entirely reasonable chips for such purposes, so there's no excuse for modern cars.

Show threadwireheadFeb 7

@jmeowmeow It does feel like we're slowly and quietly moving towards a world of faster PWM speeds. Especially when switching power supplies get involved, overall faster PWM speeds (regulator switches at 1 MHz, lights PWM at 1 kHz) are fairly easy and make the inductors smaller.

I haven't shot a performance with cheap LED light fixtures that caused banding on my camera in a while, for example.

Show threadwireheadFeb 7
@jmeowmeow Presumably a lot of the time is that mismatch between LEDs that are only vaguely fine for regular use and using it on highways where vehicles are going to be blazing by at 50+ MPH and people just not thinking things through.
Show threadwireheadFeb 7
@jmeowmeow Some of the power driving circuits are a bit happier at slow speeds, depending. Most of the heat is generated when the transistor driving the LED is in an intermediate state between on and off so slowing that down creates less heat.
Show threadwireheadFeb 7

@jmeowmeow Not an illumination engineer but at least I build LED stuff..

At least some of the time it's because they blindly migrated from incandescent to LED without adjusting anything because it's still below the flicker threshold, right? (not really)

A lot of the time, they are driving them as a series or a panel (e.g. HUB75 LED matricies) and so it's actually clocked fairly high but each LED is clocked fairly low.

Show threadwireheadFeb 1
@adrake @jess.red @glyph Have soldered MilMax hotswap keyswitch sockets in the past. The trick I found is to have a single sacrificial keyswitch that you use to hold the sockets in place.
Show threadwireheadFeb 1
@glyph @jess.red [looks awkwardly at the keyboard project that's been needing rework for months now but keeps getting bumped by other priority projects]