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.
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
My wing chun sifu played a classic martial-arts-master trick on me tonight.
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:
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
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: 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!
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…
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.
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