Much has changed in UPSide over the last week. Ground has been broken on the software; one key piece of the control daemon, the policy state machine, now exists.
Month: March 2018
UPSide needs a battery technologist
The design of UPSide is coming together very nicely. We don’t have a full parts list yet, but we do have a functional diagram of the high-power subsystem most of which can be expanded into a schematic in a pretty straightforward way. If you want to see what we have, clone the repo, cd to… Continue reading UPSide needs a battery technologist
Sneaky sifu tricks
My wing chun sifu played a classic martial-arts-master trick on me tonight.
UPSes compared to guard dogs
Somebody using the handle JeffyPoooh (yes, ‘ooo’) left a comment on The Register that is an only slightly exaggerated summary of the reasons for UPSide:
How to get started on the UPSide project
The current state of play is: We have a high-level system design and a map of the behavior states. We have a capacity target (300W for 15 mins) and a peak-continuous-load spec (400W) We know we’re going to build a double-conversion design and we’re considering a couple of alternative topologies. We pretty much know the… Continue reading How to get started on the UPSide project
Stop logging in local time!
Inertia is a powerful force. The computing world retains a lot of practices that are odd little dysfunctional relics of past stages of its technology. The one I’m here to talk about today looks like this: Mar 6 15:11:07 snark postfix/qmgr[3927]: 0422513A6C53: removed That’s a log message hot’n’fresh from my /var/log/mail.log file. It’s entirely typical… Continue reading Stop logging in local time!
All of his complexion…
Andrew Klavan has a thoughtful essay out called A Nation of Iagos. In it, he comments on William Shakespeare’s depiction of Jews in a way I think is generally insightful, but includes what I think is one serious mistake about the scene from The Merchant of Venice in which the (black) Prince of Morocco woos… Continue reading All of his complexion…
Why the Culture books were bad SF
There’s a lot of buzz about Iain Banks’s Culture universe lately, what with Elon Musk naming his drone ships in Banksian style and a TV series in the works. I enjoyed the Culture books too, but they were a guilty pleasure for me because in a fundamental way they are bad SF.
upside wants a firmware dev
The UPSide project, announced here two weeks ago, has come together with amazing speed. We now have: * A hardware lead – A&D regular Eric Baskin – with thirty years of experience as a power and signals engineer. He is so superbly qualified for this gig that my grin when I think about it makes… Continue reading upside wants a firmware dev