WaterWaiver

joined 2 years ago
[–] [email protected] 2 points 3 months ago

I don't want my children influenced by this. "Dad why does your transistor only have 3 legs?". And I had only just rid the house of dual-gate mosfets too!

[–] [email protected] 2 points 3 months ago (6 children)

I only know what wikipedia tells me about these things, I've never played with one. I also have no clue yet what it does in this circuit.

3 emitters and 2 collectors.

[–] [email protected] 8 points 3 months ago

The headline and text of this article were amended on 24 March 2025 after the Guardian was notified of a significant calculation error in the Queensland Conservation Council research. An earlier version said the dams that supply the proposed Callide and Tarong nuclear plants “could not access enough water” to cool them in the event of a meltdown; our article has been amended in line with the organisation’s revised analysis.

Source: bottom of amended article.

[–] [email protected] 1 points 3 months ago* (last edited 3 months ago)

That's a CH340G, it has an in-built 3.3V regulator. But there is no external regulator on the board.

Maybe the chip is running off its internal 3.3V, but the board designers put a tie-up resistor on one of its pins to 5V, which results in the weird 3.9V. Dunno. Try attaching a 1K resistor between that pin a GND, see if that makes the problem disappear.

[–] [email protected] 1 points 3 months ago (2 children)

The 5.3V is from your computer, that's not the fault of the USB UART.

3.2V is perfectly acceptable for a 3.3V rail.

The 3.9V is a bit weird. Can you post a photo of your USB UART board? Maybe the main chip has an inbuilt 3.3V regulator separate to the external one.

[–] [email protected] 5 points 3 months ago

Stand back, I'm carrying a budgie smuggler.

[–] [email protected] 1 points 3 months ago

It's holding a hammer!

[–] [email protected] 3 points 3 months ago* (last edited 3 months ago)

There are some youtube videos of people machining them (sadly my browser does not support smell). Looks like you treat it like any other solid material: hobb or mill the teeth. This is much more expensive than 3d printing.

You might be surprised by your 3d printed gears. If you keep the detail size large they work really well, but backlash is definitely an issue.

[–] [email protected] 2 points 3 months ago (1 children)

I provided a HTTP link not a HTTPS link, I didn't even know there was a (broken) HTTPS version of this site. Your browser must have some setting or addon that auto-redirects to https versions of sites even when the site doesn't request it.

[–] [email protected] 2 points 3 months ago* (last edited 3 months ago)

I swear that I read that white lead oxide is water soluble, thus happily sticks to your fingers and then gets on your food. I must be misremembering.

Maybe it was something about the solid lead object turning into an (oxide) powder that can then be easily ported as tiny particles on greasy hands? Hearsay science and safety information from me today :)

[–] [email protected] 5 points 3 months ago* (last edited 3 months ago) (3 children)

~~The fun thing about Pb is it's relatively safe in pure form. Unfortunately the oxides that appear on its surface are water soluble and love entering our bodies.~~

Just looked this up, apparently I'm completely wrong. Maybe I was thinking about lipid compatibility? Not sure now.

[–] [email protected] 3 points 3 months ago* (last edited 3 months ago)

Welcome to security news theatre :(

I don't think espressif would bother suing, these kind of misshapen claims get constantly made against popular projects all of the time. It's just unusual to see so much coverage about this particular one.

Not so say that externally attackable vulnerabilities in an ESP32 don't exist, they might. Bluetooth devices have an awful track record. But making them up doesn't help the world.

 

The new theme seems deadset on replacing content with whitespace, driving my father in particular mad (he's having more luck finding Australian news on DW than the ABC right now; and he is sore that he has to hunt for the "Science" news category now in menus).

Not sure how long they'll keep the ?future=x flag available, but for now it gives you about double the number of articles per page.

 

Recommend engineer's bikinis (shorts).

 
 

I can't find a official message from the RTBU (their website is out of date, nothing seems public on facebook and twitter refuses me access unless I create an account).

 

8PM (right now) +/- 10 hours

Better call the tiberium harvester back in.

16
submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]
 

Encountered this fellow during bushcare today. He was sitting right on top of the bridal veil roots we were pulling, looking suspiciously like a rock.

We probably shouldn't have handled him (I hope turtles don't get dizzy from being turned upside down). We put him back down and hid him under some other groundcover as a local Kookaburra was loitering.

5
submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]
 

Imagine you're in the blue car, wanting to turn left:

Green is turning right. There is only one lane.

Two options I see:

(1) Stay behind the green car, to the left (and behind the crossing) until they leave.

(2) Pull up to the left of the green car (as if there were two lanes).

I assume (1) is correct given there is technically only one lane, but I can't find any materials on the NSW site or driving handbook about it and (2) is something I see other people do.

(I have my license test next week)

EDIT: Solved, option (2) is the right one. see https://www.nsw.gov.au/driving-boating-and-transport/roads-safety-and-rules/sharing-road-overtaking-and-merging/overtaking-safely

The only time you can overtake on the left is when the vehicle you’re overtaking is:

  • waiting to turn right or make a U-turn from the centre of the road
 

I could not find any mentions of these problems online. The article itself has no technical detail.

Looking forward to seeing what the actual problems are. It seems this is the first product to market.

Guesses based off the general subject matter:

  • Silica concentrations probably vary depending on the exact position of your head, especially since it's heavy material. If you mount this sensor even a few meters away from a worker then it's readings could possibly become invalid, eg because an angle grinder is firing dust a different direction to the sensor.
  • Silica is a slang term for a very big category of materials. Some might look completely different to others under certain laser observations, leading to some getting missed (bad) and others materials triggering false positives (leading to the sensor's screams being ignored by workers).
  • Self-cleaning routines might be needed to stop it clogging up, otherwise the sensor starts reporting a higher baseline. They could either choose to report this ("pls clean me" light comes on) or ignore it (bury head in sand mode).
  • Alternatively it's performance might actually be fine, but perhaps it's still being spruked inappropriately. Government involvement in funding the project might (?) magnify this problem.
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