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DanielR

@danielr-phd.bsky.social

1.4K followers 123 following 771 posts

Imaging Physicist substack.com/@danielrphd

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DanielR @danielr-phd.bsky.social · 01/10/2026

It is crazy how little it costs to make a circuit board. I had five boards made and delivered to my door for a total of US$10.59. Time from placing the order to receiving the boards was exactly two weeks.

DanielR @danielr-phd.bsky.social · 01/10/2026

This is a printed circuit board where I did a last-minute change. Oops, I forgot to rerun the design rule checks before exporting the Gerber files. The result is a stitching via shorting the ground plane to a signal line. This is just a prototype board so not a big deal.

DanielR @danielr-phd.bsky.social · 24/09/2026

Information wise, there isn't much here that wasn't already known. The video was obviously released by the company (that's their logo on the top left). celebratech.net

celebratech.net

Celebra Tech — українська defence tech компанія повного циклу

Спеціалізуємось на оборонних технологіях та розробляємо передові безпілотні системи, роботизовані комплекси, засоби радіоелектронної боротьби та власне програмне забезпечення.

DanielR @danielr-phd.bsky.social · 23/09/2026

A look at an interesting Ukrainian drone. It has a 4-cylinder engine but is otherwise a bit of a mystery.

DanielR @danielr-phd.bsky.social · 19/09/2026

I always look at the safety card and check where the exits are.

DanielR @danielr-phd.bsky.social · 17/09/2026

Both are good. Raisins are fine as long as there are not too many.

DanielR @danielr-phd.bsky.social · 17/09/2026

Except for the cigarette.

DanielR @danielr-phd.bsky.social · 15/09/2026

Thank you for your well-considered comment. Being a resource was my intent. Using my old Twitter posts as a starting point, and then posting a revised version to Substack made the most sense to me. The audience on Substack is also much more mature than that lurking on X.

DanielR @danielr-phd.bsky.social · 14/09/2026

Where do the engines come from? That is the question I ask whenever a company announces it is going to make large quantities of long-range drones. Here is a close look at a Ukrainian engine. The article is free to read on Substack. danielrphd.substack.com/p/ukraine-ma...

danielrphd.substack.com

Ukraine Makes a Drone Engine

The MMV400 By Glefa and Ursus

DanielR @danielr-phd.bsky.social · 12/09/2026

"many of Trump’s attempts at [foreign] interference failed... Now Carney seems to be on the verge of doing something Trump couldn’t: help to install a more favorable government abroad." - The New Republic 😅 🇨🇦

DanielR @danielr-phd.bsky.social · 08/09/2026

Here is a thread on Bars from almost one year ago. bsky.app/profile/dani...

DanielR @danielr-phd.bsky.social · 08/09/2026

You can read more about recent developments in this RBC interview. www.rbc.ua/rus/news/vla...

Власні двигуни та ручне керування над РФ: інтерв'ю з розробником реактивних дронів "Барс"

Подробиці читайте на сайті

DanielR @danielr-phd.bsky.social · 08/09/2026

The Bars cruise missile (sometimes a drone) is one of the more interesting developments to come out of Ukraine. Of course, development does not stop.

DanielR @danielr-phd.bsky.social · 17/08/2026

To complicate matters, Donald Trump is chummy with russian and North Korea. This whole mess could become quite a bit hotter in the next six months.

DanielR @danielr-phd.bsky.social · 17/08/2026

There is nothing stopping European countries from defending Ukraine (and Europe).

DanielR @danielr-phd.bsky.social · 17/08/2026

Last January, I posted about a colleague who died from frontotemporal dementia, and how Trump was showing similar symptoms. Since then, Trump's symptoms have obviously gotten much worse. The USA will continue to make excuses for him though.

DanielR @danielr-phd.bsky.social · 17/08/2026

This drone flying over Ukraine illustrates how much trouble the world is in. Is it operated by russia or North Korea? Was it made in North Korea or in China? Or was it supplied by Iran? Shaun Pinner and Chris Sampson recently asked, "Are we in a world war?" Perhaps yes.

DanielR @danielr-phd.bsky.social · 14/08/2026

Trains move. Substations don't.

100

DanielR @danielr-phd.bsky.social · 14/08/2026

5. As for targets in russia, there are many interesting possibilities. What would you target?

DanielR @danielr-phd.bsky.social · 14/08/2026

4. At this point it appears that Crimea is very close to going fully dark. A big question is what happens then? Will the Kerch bridge be hit? Will Ukraine start eliminating substations inside russia? The website russiaoilpowermap.com provides a nice list of potential targets.

DanielR @danielr-phd.bsky.social · 14/08/2026

3. Losing refrigeration, HVAC and possibly water will make life difficult, i.e., russians should leave while the Kerch bridge stands. The latest update by Magyar's Birds @414magyarbirds gives an idea how many electrical substations have been hit by Ukrainian drones. bsky.app/profile/maks...

DanielR @danielr-phd.bsky.social · 14/08/2026

2. A corresponding image from August 11, 2026 shows large parts of Crimea including Yalta and Yevpatoriya are now without power. Simferopol is dimmer, suggesting reduced power. Mariupol and Berdiansk have gone dark. Lack of streetlights is just a proxy and not a big problem.

DanielR @danielr-phd.bsky.social · 14/08/2026

1. Ukraine has been targeting electrical substations in Crimea and other parts of occupied Ukraine. The NASA Worldview data lets us see the effects on night-time lighting. An image from April 5, 2026 shows where there are lights and thus power.

DanielR @danielr-phd.bsky.social · 13/08/2026

4. For readers interested in survival after capture, there are many hard-won lessons here. This book also provides clear insight into russia's dangerous incompetence and brutality.

DanielR @danielr-phd.bsky.social · 13/08/2026

3. Each situation was assessed (usually bad) and then the options carefully considered (also bad). This approach included how to interact with guards and manage his fellow prisoners.

DanielR @danielr-phd.bsky.social · 13/08/2026

2. Captured and taken to a Black Site, he and others were tortured and horribly mistreated by the russians. Pinner's writing is frequently intimate as he shares his innermost thoughts and feelings. One thing that struck me was how Pinner used his brains and training to survive.

DanielR @danielr-phd.bsky.social · 13/08/2026

Live Fight Survive by @shaunpinner.bsky.social 1. This intense and unforgettable account is a powerful study of survival in the face of extreme hardship. Written in the first-person, Pinner describes how he and other soldiers defended Mariupol after russia invaded in 2022.

DanielR @danielr-phd.bsky.social · 12/08/2026

Solar eclipse today. We only catch the edge in Canada.

DanielR @danielr-phd.bsky.social · 10/08/2026

I also got a copy.

DanielR @danielr-phd.bsky.social · 07/08/2026

Theme song for Chonky Boy?

DanielR @danielr-phd.bsky.social · 06/08/2026

2. You can read about Chonky Boy here: danielrphd.substack.com/p/chonky-boy

danielrphd.substack.com

A Ukrainian Drone

DanielR @danielr-phd.bsky.social · 06/08/2026

1. I wrote an article about a Ukrainian drone that for a long time did not have a name. Now it has two names, an interesting engine, and a curious business arrangement. These drones are being made in quantity and have been spotted flying into russia. Here's your chance to see what's inside.

DanielR @danielr-phd.bsky.social · 30/07/2026

Bomb it too.

DanielR @danielr-phd.bsky.social · 15/07/2026

2. Here is the full video showing the drone and capture of a russian prisoner.

DanielR @danielr-phd.bsky.social · 15/07/2026

1. Ukrainian soldier shoots at a nearby russian drone. The subsequent explosion must hurt.

DanielR @danielr-phd.bsky.social · 13/07/2026

Ukraine has systematically targeted russian air defence, and pretty much everyone (including me) predicted that the situation could rapidly change once these defences were sufficiently degraded. The result is still surprising though. This is like watching baby seals being bludgeoned.

Reposted by DanielR

MAKS 26 👀🇺🇦 @maks23.bsky.social · 08/07/2026

🇺🇸Trump: Would you go to Moscow? 😄Zelensky: It's difficult. There are a lot of Ukrainian drones there. 👀Reporter: Will you go to Ukraine? 🇺🇸Trump: I would. I would rather have the war be over.

DanielR @danielr-phd.bsky.social · 05/07/2026

Ukraine continues to hit electrical infrastructure in Crimea. Unfortunately, it was partially cloudy the night of July 5 but obviously russians are struggling to keep the lights on. The city of Yevpatoriya is dark.

DanielR @danielr-phd.bsky.social · 04/07/2026

I was thinking of writing exactly that but decided not to. There are still a lot of substations to target.

DanielR @danielr-phd.bsky.social · 04/07/2026

2. A more recent photo from July 2, 2026 shows that Crimea is close to being completely dark.

DanielR @danielr-phd.bsky.social · 04/07/2026

1. Ukraine has been targeting substations and other infrastructure in Crimea. The NASA Worldview data lets us see the effects on night-time lighting. An image from May 10, 2023 shows there was plenty of lighting (light pollution).

DanielR @danielr-phd.bsky.social · 03/07/2026

Excellent and enjoyable video.

DanielR @danielr-phd.bsky.social · 03/07/2026

This is an enjoyable video by Operator Starsky on how russian brains are reacting to their fuel crisis. That is, Stages Of Grief Explained

DanielR @danielr-phd.bsky.social · 22/06/2026

4. (ps) The location 46.735955, 36.329734 posted by Dominik @99Dominik_

DanielR @danielr-phd.bsky.social · 22/06/2026

Posted by Dominik @99Dominik_ 46.735955, 36.329734

DanielR @danielr-phd.bsky.social · 21/06/2026

3. The video is here. bsky.app/profile/tend...

DanielR @danielr-phd.bsky.social · 21/06/2026

2. What makes this special is the video also shows the car's GPS display thus giving the exact time and location. OSINT folks greatly appreciate videos like this.

DanielR @danielr-phd.bsky.social · 21/06/2026

1. There must be some sort of geolocation award for a video showing the results of a Ukrainian attack on russian trucks. There are two burned trucks along with an air-defence vehicle.

DanielR @danielr-phd.bsky.social · 19/06/2026

These things happen.

DanielR @danielr-phd.bsky.social · 17/06/2026

A video showing the Behemoth drone by Culver Aerospace. In a few days, I will release a story on this drone.