If you want a hardware upgrade it's actually reasonably inexpensive to build something direct drive (which is how the real sub-30kg ones work). This gives you many advantages over the plastic gear type including a much faster response time and more accurate positioning.

Look for "gimbal motors", basically a large skinny pancake brushless motor. Combine those with a storm32, simplebgc or odrive and a magnetic encoder. A 3D printer will help.

You can also have a look at low cost suppliers of cheap UAV stuff if you want something fully integrated for you. A basic Gremsy, Viewpro or Siyi isn't that much more than your Amazon thing. Various software bugs but they can be worked around. The DJI units can sometimes be had used and some of the protocols have been RE'd already.

Comments URL: https://news.ycombinator.com/item?id=46545838

Points: 2

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Nowadays this type of diving would be done using an eCCR (and backup open circuit), where some software on a microcontroller controls the amount of oxygen in a breathing loop. A scrubber (hopefully) removes the CO2. Changing the gas mixture as you go is required to reach these sorts of depths because oxygen becomes toxic at pressure, and gas density itself can cause issues with breathing.

https://valetudo.cloud/pages/general/supported-robots.html#i...

Every Rolls-Royce gas turbine FADEC runs ADA binaries on a custom processor [1].

It's also used extensively at Airbus. Lots of DO-178C (safety critical aerospace).

1: https://www.his-conference.co.uk/session/visiumcore-a-high-i...

https://www.revk.uk/

He also runs an excellent ISP in the UK called AAISP which I can highly recommend (https://www.aa.net.uk)

AAISP build their own core & customer networking devices/routers from scratch (not Linux based) in the UK. They are fascinating to use - a completely different evolutionary tree to any other networking kit I've used. Some unique features.

https://www.firebrick.co.uk/fb9000/

Comments URL: https://news.ycombinator.com/item?id=44570405

Points: 3

# Comments: 0

Also, no mandatory login walls for toolchains and datasheets gets them a lot of goodwill in my book.

https://n-fuse.co/devices/tinyCurrent-precision-low-Current-...

https://www.chronova-engineering.co.uk/epoch

Comments URL: https://news.ycombinator.com/item?id=43783885

Points: 6

# Comments: 0

https://www.hlsnewforest.org.uk/2024/10/24/reflective-collar...

You can write custom c++ modules for bits they don't have already, although that's pretty rare. Often used with HA but it works fine standalone with MQTT too, and deployment doesn't have to be from a server.

https://esphome.io/

I use the "cab404" one and very impressed with it.

This is presumably a totally uncritical lazy press release copy paste. For goodness sake, NASA's Ingenuity is not exactly a secret and that's only the latest in a very long line of commercial coaxial UAS.

Looks like a perfectly nice coax, but exactly the same tradeoffs of much higher mechanical complexity for a slightly smaller operating footprint which make them less appealing for most use cases. The article completely glosses over the fact that most traditional X/+ designs fold for transport.

Pluses of my Pebble Time:

- A lovely always on e-ink screen (the Pine Time has a TFT that relies on wrist detect to be visible, like an apple or pixel watch)

- Much better battery life

- A perfectly crafted UX full of lovely little touches, it's hard to explain if you haven't used one. It's full of animations but somehow they aren't annoying. Bit like using BB10. You can tell the dev-years & care that went into knocking off all the rough edges. It's the opposite feeling of "f you you're the product" I get from using most modern "tech" (Windows/Pixel watch/etc etc).

- Brilliant timeline view

- Rock solid connectivity (again, better than android/pixel watches)

- Much nicer HW feel in terms of build & fit/finish

- Huge user base who created a massive range of apps & watch faces