HN user

wtfmcgrill

67 karma
Posts0
Comments18
View on HN
No posts found.
Diamonds Suck 3 years ago

The margin is in cutting and faceting. The Swiss make a CNC diamond cutting machine that can cut and facet a diamond in about an hour vs days for manual cutting.

The positioners and tools are much cheaper if you buy direct from a DMC distributor. I bought the afm 8 and af8 from patlon in Canada and I got charged the MSRP on the DMC website. AF8 and the universal positioners was like 400usd when I got it and it covers like 90% of use cases. It can't do db pins though. If you buy the 38999 connectors from PEI genesis it also costs a lot less than what you would expect.

Lunar Energy 3 years ago

By the limited information provided in their engineering video yes, it's basically a battery + BMS in the really big box and a charge controller, inverter and service disconnect in the other box. The batteries seem to be liquid cooled though.

Correction: it's a complete solar system (sans panels) packaged as an all in one system. Looks like they're trying to applelify solar

Lunar Energy 3 years ago

Pb free man, gotta show people that you believe in your product by huffing tin fumes.

My immediate thought when I saw Handbook of Black Magic was "wonder what book has his nickname". "High Speed Digital Design: A Handbook of Black Magic" well I'll be damned, wish I had known about this a year ago.

Relay go click. Nice board, should add an LED parallel to the coil with a jumper to enable/disable the led, can very helpful if you're in a louder area and you can't reliably tell if the relay is on.

I have the same problem, I don't track my spending but have money automatically plowed into different investments and am generally frugal. Been looking into money manager ex and home bank as foss softwares. Mint, quicken and ynab are popular but I don't want a cloud solution where I have to pay a subscription fee, I mostly just want transactions with labelled data so I can see where the money goes.

If it's life safety chances are there's an acceptance/certification test that needs to be done to demonstrate safety. I think some applications that are life safety can use FEA for acceptance test but the criteria are strict and the FEA model needs to be well understood. FEA is mostly to aid in the design phase.

The running joke among my doctor friends is that pediatricians are immune to disease. Sick like a dog for the first couple years but then they become bullet proof.