Dimand

joined 1 year ago
[–] [email protected] 2 points 4 weeks ago (1 children)

+1 to this. A steel frame 90s mountain bike with 26" wheels, some maintenance know how and about $100 in parts will get you thousands of km of riding with much less trouble compared to a fancy aluminium/carbon frame with hydraulic breaks and a drivetrain that locks the moment something goes slightly out of tolerance.

Only caveat is needing to buy some tools, but good tools will last.

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

Old school YouTube here. Short niche content, no clickbait or algorithm pushing. Nice birds, love it. I feel like you haven't been able to browse and just watch simple original content like this since 2015.

My only complaint is it's three pages down on videos.

[–] [email protected] 4 points 3 months ago

+1 for frigate. I have some old V2 wyze cameras with openmiko for rtsp functionality.

https://github.com/openmiko/openmiko

[–] [email protected] 7 points 6 months ago
[–] [email protected] 5 points 9 months ago

Solvespace

Watch a few of these to get started, skip ahead as needed. It's got some limitations but leagues ahead of freecad in terms of UI and workflow.

https://youtube.com/playlist?list=PLGAjLwYQPgaBafzQTLA84IkTOptOdIsUX&si=sci5_24nPVyUEGqm

[–] [email protected] 5 points 9 months ago

The existence of foss projects should never exclude the creation of alternatives if someone wants to try.

[–] [email protected] 2 points 9 months ago

Try solvespace. Freecad UI is a mess. Hopefully they fix it one day.

[–] [email protected] 10 points 9 months ago* (last edited 9 months ago)

Wow. Thank fuck I love somewhere where unions are an accepted and appreciated concept.

[–] [email protected] 11 points 9 months ago (1 children)

I think this is rather location dependent. Here in Aus a lot of people I know use them. Just some more anecdotal evidence.

[–] [email protected] 8 points 11 months ago

DOIs or GTFO

[–] [email protected] 1 points 1 year ago

It's not easy but you can correct the atmosphere. This is done with guide stars and adaptive optics.

The bigger challenge is that for intense pulsed lasers, the standard laser profile causes them to self focus in air through nonlinear effects. To overcome this you need to make weird profiles like top hats that are much hard to get just right.

This is a fundamentally physical limitation that is pretty tricky to overcome.

[–] [email protected] 11 points 1 year ago (4 children)

The pure joy of putting a single joule of optical power into a sub nanosecond pulse.

For those not familiar with lasers, that's a GW of instantaneous power that you can focus down to a micron sized spot.

https://youtu.be/Z1Xky_ermd4?si=1Luz0fuzm4kcwIwc

All that said, the successful laser weapons right now seem to all be anti drone/aircraft and they are typically using tracked CW (not pulsed) lasers with heating over time to avoid atmospheric lensing. Lots of challenges to overcome in getting pulsed energy a long way through air.

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