bertm

7 ms·

1.
by bertm 11mo ago
This misses the NVIDIA Jetson/Orin/Thor line of GPU-enabled edge computers which are more comparable with Raspberry Pis. The Jetson Orin Nano Super is $250. Another feature which we find useful is the native NVMe drive support. Fo
2.
by bertm 1y ago
A friend and I found a contractor to give us a couple of these lights in the Phoenix area. We traced the LEDs back to a Seoul Semiconductor Phosphor on-chip design. We still have a suspicion that LM80 testing didn’t catch this and it was du
3.
by bertm 1y ago
I had that same thought. I travel a bunch for work and would love to be able to wire up a RPi/Arduino remotely to a sensor or other device and run a test or two.
4.
Why Are Streetlights Turning Purple? In Depth Analysis and Fix [video](youtube.com)
3 points by bertm 2y ago|1 comments
5.
by bertm 2y ago
Deep dive into why streetlights across the US are failing.
6.
by bertm 2y ago
Dr. Levenspiel came up in another thread about elephant curves. He tried for many years to get this article published on the aerodynamics of dinosaurs and how this might reflect on atmospheric pressure at the time. There is a long list incl
7.
Atmospheric Pressure at the Time of Dinosaurs [pdf](levenspiel.com)
3 points by bertm 2y ago|1 comments
8.
by bertm 2y ago
I have to plug Dr Octave Levenspiel. Levenspiel was a professor emeritus when I did my undergrad. He did much of the work on industrial fluidized beds among other things. The elephant curve discussions were a criticism of the complex multi-
9.
by bertm 7y ago
I used this all the time. Sad to see it go.
10.
Hipmunk Says Goodbye(hipmunk.com)
1 points by bertm 7y ago|0 comments
11.
by bertm 7y ago
Found the complaint in PACER if anyone is interested in reading. https://www.scribd.com/document/420311557/Complaint-19-06570
12.
by bertm 7y ago
I worked for a long time as a chemical engineer making cadmium containing quantum dots. We had many discussions inside the company about complying with the EPA's TSCA regulations. https://www.epa.gov/laws-regulations&#x
13.
by bertm 8y ago
Great analysis. I wonder how a semi-log graph would look.
14.
Ask HN: Recommended Benefits Service/Software
1 points by bertm 9y ago|0 comments
15.
Tesla Battery Supply Constraints Weigh on a Young Storage Industry(greentechmedia.com)
1 points by bertm 9y ago|0 comments
16.
by bertm 10y ago
"A study published in 2007 from the US National Cancer Institute, for instance, found that men that took multivitamins were twice as likely to die from prostate cancer compared to those who didn’t. And in 2011, a similar study on 35,53
17.
by bertm 11y ago
Could be neat if they become the defacto way to launch and sell opensource hardware. I'd be interested to see if that pencils out as a viable/scalable business.
18.
by bertm 11y ago
Great contrast to the OP. They sound like a highly competent team, making a better "coffee".
19.
by bertm 11y ago
LoRa is a really cool technology. We are incorporating it into our networking stack/ hardware module. From field testing, we've seen about 4-6 miles line of sight, and about a mile through an urban environment (parking garage, apa
20.
by bertm 11y ago
Try out Low Power Labs Monteino with the HopeRF, RFM95 LoRa module. The radio library is lacking but you can get up and running quickly. https://lowpowerlab.com If you want something a little more enterprisy and turn-key, try t
21.
by bertm 11y ago
Another article on the same topic: http://www.computerworld.com/article/2969396/internet-of-thi... "Filament looks really interesting. It would be possible to dismiss this fledgling business as a hodgepodge o
22.
Peak IoT platform? Filament raises $5M(computerworld.com)
4 points by bertm 11y ago|0 comments
23.
by bertm 11y ago
"To build its technology, Filament is using a series of protocols that include the blockchain transaction database behind Bitcoin; BitTorrent, the popular peer-to-peer file sharing software; Jose, a contract management protocol that is
24.
Filament raises $5M to bring the blockchain to the Internet of things(fortune.com)
17 points by bertm 11y ago|8 comments
25.
by bertm 11y ago
Full report: http://www.mckinsey.com/~/media/McKinsey/dotcom/Insights/Bus...
26.
Unlocking the potential of the Internet of Things(mckinsey.com)
2 points by bertm 11y ago|2 comments
27.
A Declaration of Device Independence(medium.com)
8 points by bertm 11y ago|0 comments
28.
A Chemistry Startup Story(chemjobber.blogspot.com)
2 points by bertm 11y ago|0 comments
29.
V3 Telehash Encrypted Mesh Protocol Declared Stable(telehash.org)
8 points by bertm 11y ago|1 comments
30.
by bertm 12y ago
It looks like the powder is made by a physical process. Just as water absorbs into a towel. Ethanol apparently absorbs into dextrin powder and stays as a dry solid. From the patent: EXAMPLE II A 150 g. amount of the bulked 5 DE. MOR-REX dex

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