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David Perry

@dwjperry

Engineer/Scientist. Co-founder & CTO at BOOMPower, Director at Hepburn Energy Used to electrify ๐Ÿง  now ๐Ÿก (less squishy).

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17.09.2023
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Latest posts by David Perry @dwjperry

Get onto it Australia! Plenty more rooftops yet...

11.03.2026 11:31 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

I've also heard from them that stock is piling up, so you'd think they'd get moving

11.03.2026 11:01 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Fuckers!

11.03.2026 10:50 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Old thread alert! Apparently Tesla have sorted this and you can add a Powerwall 3 to a 2 now.

11.03.2026 09:25 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Can't tell you how happy I am to have someone drop train facts on me, thank you !โ™ฅ๏ธ

So you'd only be able to keep the bodies and nothing else? Is there even enough room on top for a pantograph? Could you swap one unit in a set for a hypothetical new electric version or too underpowered?

09.03.2026 20:58 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Has there been any work on retrofitting vlocity units?

Even just getting electrification within the suburbs would be a big win, especially given how gross southern cross is.

09.03.2026 11:00 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

And the "personality" they are juicing these products with absolutely encourages that. If you try some of the coding specific tools, they tame it right down because no-one has time for the ego-boosting chit chat.

09.03.2026 10:15 ๐Ÿ‘ 5 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

That's an ambitious one! I don't mind that though given the number of pixels to worth with...

09.03.2026 09:57 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

I often wondered if you did this. Suspect I have a different world view to you on this, I do find the tech useful. But the subtlety of the BS is terrifying, people are far less critical than I ever imagined coming from a science trained bubble.

09.03.2026 09:44 ๐Ÿ‘ 8 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

The OMG ones? Also brought home six...did not survive long.

08.03.2026 07:19 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

๐Ÿชฆ๐Ÿชฆ๐Ÿชฆ

06.03.2026 22:00 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

It's no good, my wife has a hard science PhD.

06.03.2026 21:56 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

I don't think you're allowed to be a professor without a recumbent bike right?

04.03.2026 11:55 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
a woman is smiling and saying they think he is a righteous dude . ALT: a woman is smiling and saying they think he is a righteous dude .

Did not like their CEO one bit, but now...

27.02.2026 22:11 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

The engineer there dipped a finger in the cooling goo and had a taste to show off... that'll stick with me next time I watch that movie.

24.02.2026 23:21 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

And as a slight aside, have you seen how DUG do data centre cooling? That one gave me a real crisis when I visited their office in Perth...

24.02.2026 12:09 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

๐Ÿ˜ฌ That sounds about right. There's plenty of water waste around in ag and so on for them to solve a small piece of it and say "it's all fungible, so we're zero water use now".

24.02.2026 12:03 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0

Drivers okay I wonder? I have a perfectly fine old laser printer but PITA to get it running on windows 10.

19.02.2026 06:46 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
KPMG partner fined for using artificial intelligence to cheat in AI training test Firm says person fined A$10,000 is one of over two dozen staff in Australia caught using AI in exams since July

Sorry, but this is hilarious.

16.02.2026 22:57 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Hang on, I've tinkered in big compute... that really doesn't have to be true I think. Many compute loads are flexible, and could be throttled or redistributed cheaply.

16.02.2026 21:31 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Had a similar enraging experience with my super "5 years ago, sorry no paperwork"... Robotdebt, MFers!

15.02.2026 22:13 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Up there with the slack founder who just wanted to do gardening...

13.02.2026 00:52 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1

Going straight to my slack emojis โ™ฅ๏ธ

12.02.2026 21:08 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
YikeBike - Wikipedia

This was close ... en.wikipedia.org/wiki/YikeBike

09.02.2026 23:41 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Saw Pauline in the security queue and five fossil fuel ads at the airport... that wouldn't happen on the train.

05.02.2026 07:23 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
Police tell of teen tram thief's obsession A 15-year-old boy who allegedly stole two trams over the weekend, drove them a total of more than 25 kilometres and picked up passengers along the way is a good lad whose obsession got the better of h...

Team up with thus guy to do the deliveries

www.abc.net.au/news/2005-04...

04.02.2026 04:43 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I think people often wonder this, and it's a great question, so let me explain the advantages of 3D printing whistles. There are many.

The 3D printing effort started from one of our organizers who started by sourcing mass-produced whistles.

04.02.2026 03:00 ๐Ÿ‘ 1239 ๐Ÿ” 408 ๐Ÿ’ฌ 16 ๐Ÿ“Œ 77

There's a salvage yard near me with all kinds of weird glazing left over from commercial projects... would love to do something like this.

31.01.2026 09:55 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

๐Ÿ˜ฑ
We're paying like $0.15/W for resi scale orders.

29.01.2026 09:23 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

How much do you pay in $/W by the pallet load, out of curiosity?

29.01.2026 09:07 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0