Cyclical (u/Cyclical)

Cyclical commented on We saw a Pi running underwater at CES in Las Vegas raspberrypi.com/news/we-s... · Posted by u/Brajeshwar

jimmyswimmy · 2 years ago

There are a number of conformal coatings that can be used to keep a circuit board dry at fish tank pressures. Parylene is my favorite as it isn't too harsh on the board materials and coats even underneath the surface mount components. Doesn't usually stick to the board though so it's more of a perfectly sealed bag around the board. It's good for basically forever.

If you unplug the connectors you rip a hole in the "bag" though and the connectors will corrode. The way around that is to use expensive hermetically sealed connectors that are designed to operate underwater. Each side of those will cost a few hundred USD for boring round connectors. I have never tried to run e.g. HDMI through a bulkhead but such a connector would probably be impressively expensive.

Anyway the best thing about Parylene is you have to send your equipment out to have it applied, no do it yourself here. The spray on coatings are usually sticky, messy, and not that great overall in comparison.

Cyclical · 2 years ago

As a small note, IP67 sealed connectors vary greatly in price, with excellent high pin count options like the Ecomate Aquarius line being in the low tens of dollars. The Deutsch/Amphenol AT automotive connectors are also very cheap yet provide a watertight seal.

Cyclical commented on Autophage rocket engine consumes plastic fuselage for fuel theengineer.co.uk/content... · Posted by u/timthorn

Cyclical · 2 years ago

Promin Aerospace, a Ukrainian company founded by a friend of mine, has been working on the same technology. Interesting to see this take on it though, it's an idea that seems almost too fantastical to work.

Cyclical commented on Roblox is coming to Quest 2 and Quest 3 VR headsets theverge.com/2023/7/12/23... · Posted by u/astlouis44

Cyclical · 2 years ago

Roblox is likely one of the closest things to an actual "metaverse" that exists right now. An extensible world, where anyone can add/program in locations and experiences, is the truly transformative part of media like Ready Player One.

Cyclical commented on Canada plans brain drain of H-1B visa holders, with no-job, no-worries permits theregister.com/2023/06/2... · Posted by u/Bender

Kareem71 · 2 years ago

As a Canadian who moved to the US for tech, I strongly advocate for any young Canadian with capable means who is reading this to leave Canada.

An already broken system is being stacked against you

Housing prices are more expensive in Canada. Health care systems are crumbling within Canada. Wages are lower in Canada. General cost of living is more expensive in Canada

I was frankly shocked after a lifetime of watching CBC just how much my quality of life improved by moving to the USA.

Cyclical · 2 years ago

I had the exact opposite experience moving from Canada to San Francisco. While wages are much higher, the cost of living is not even comparable - anecdotally much, much higher in SF than either Toronto or Vancouver (both of which I have lived in). Healthcare has been a horrible experience here too, with Kaiser putting my through endless levels of bureaucracy in an effort to avoid paying for my medication.

Cyclical commented on Ways to Put Lasers on Silicon spectrum.ieee.org/lasers-... · Posted by u/mfiguiere

Cyclical · 3 years ago

I took Lukas Chrostowski's silicon photonics design course back when I was studying at UBC and it was one of the most interesting courses I ever participated in. We designed and actually did tape out for multiple projects like DBR resonator cavities, which was an incredible experience. For anyone intetested in the field I recommend his book Silicon Photonics Design: From Devices to Systems.