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David Perry

@dwjperry.bsky.social

Engineer/Scientist. Co-founder & CTO at BOOMPower, Director at Hepburn Energy Used to electrify 🧠 now 🏡 (less squishy).

605 Followers  |  235 Following  |  645 Posts  |  Joined: 17.09.2023
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Posts by David Perry (@dwjperry.bsky.social)

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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 — 👍 1    🔁 0    💬 0    📌 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 — 👍 0    🔁 0    💬 0    📌 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 — 👍 0    🔁 0    💬 1    📌 0

😬 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 — 👍 0    🔁 0    💬 2    📌 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 — 👍 0    🔁 0    💬 0    📌 0
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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 — 👍 0    🔁 0    💬 0    📌 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 — 👍 0    🔁 0    💬 0    📌 0

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

15.02.2026 22:13 — 👍 1    🔁 0    💬 0    📌 0

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

13.02.2026 00:52 — 👍 1    🔁 0    💬 0    📌 1

Going straight to my slack emojis ♥️

12.02.2026 21:08 — 👍 1    🔁 0    💬 0    📌 0
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YikeBike - Wikipedia

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

09.02.2026 23:41 — 👍 0    🔁 0    💬 0    📌 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 — 👍 1    🔁 0    💬 0    📌 0
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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 — 👍 2    🔁 0    💬 0    📌 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 — 👍 1243    🔁 408    💬 16    📌 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 — 👍 2    🔁 0    💬 0    📌 0

😱
We're paying like $0.15/W for resi scale orders.

29.01.2026 09:23 — 👍 2    🔁 0    💬 1    📌 0

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

29.01.2026 09:07 — 👍 1    🔁 0    💬 1    📌 0

I was tempted to do one of the courses out of morbid curiosity... Thank goodness I dodged that, pretty much what I expected.

28.01.2026 21:59 — 👍 0    🔁 0    💬 0    📌 0

I'll gladly take a modern sleeper train and not have to wait until I'm at retirement age...

27.01.2026 21:22 — 👍 1    🔁 0    💬 1    📌 0

I have to fly to Canberra next week for work and the whole process is so incredibly miserable.

Dreaming of a world where travel is relaxed, low carbon and fun.

27.01.2026 09:06 — 👍 4    🔁 2    💬 1    📌 1

Imagine if Australia had electric interstate trains with these...

27.01.2026 09:01 — 👍 7    🔁 1    💬 1    📌 0

Wow, that's real living-in-the-future type stuff!

27.01.2026 08:55 — 👍 0    🔁 0    💬 0    📌 0

Oof. Well, I've seen some attempts with Bunnings shade canopies etc. but not ideal

25.01.2026 02:33 — 👍 0    🔁 0    💬 0    📌 0

I wouldn't put them on a north or west wall with no shade, but it's pretty usual otherwise.

25.01.2026 01:29 — 👍 0    🔁 0    💬 1    📌 0

A new 40kWh battery can be had for that price now 😬😬😬

25.01.2026 01:10 — 👍 0    🔁 0    💬 1    📌 0

You might be surprised... The energy use from blower fans and air leakage on ducted gas can be so shit that you'll end up ahead.

24.01.2026 23:14 — 👍 2    🔁 0    💬 1    📌 0

I'm looking at Sigenergy V2X module which will get you 12/25kW... But gotta keep asking myself, what would I do with it?! I can't export more than 5kW anyway. Maybe if you wanted the fast charging to dump a bunch of solar into the car quickly if you're not home as much.

24.01.2026 21:53 — 👍 2    🔁 0    💬 0    📌 0

I might add V2L to my battery stack, but BYD doesn't warrant it yet outside pilots. But mostly for energy nerd sake... It doesn't really stack up now that home batteries have gotten incredibly cheap.

24.01.2026 20:28 — 👍 1    🔁 0    💬 1    📌 0

An EV charger that can vary charge rate based on solar exports might be your best bet? I gather you want to soak up solar, rather than have loads of battery capacity for playing with Amber or similar.

24.01.2026 20:25 — 👍 1    🔁 0    💬 1    📌 0

Yeah, sorry 😐 let me know if you wanna chat about it another time

24.01.2026 12:08 — 👍 1    🔁 0    💬 1    📌 0