Possible concerns I heard/thought of:
* Inrush currents
* Ability of +24V supply to handle fast PWM of up to a couple amps total
* Switching time / "smearing" of PWM pulses
* EMI/RFI that could mess with a nearby Raspberry Pi type device on the same 5V supply
* Are the resistor values right
* Do we need capacitors in here somewhere
Now on the Cargo-Culted EE Design Hour:
I've found this suggested circuit to drive some LED strips (analog, 5-channel RGB+CCT) with the TLC59711 PWM IC which @catoutofbed recommended to me ages ago.
The IC has nice features which should prevent flicker unlike many others, but it's not designed for driving strips. It's an open-drain device. Thus the workaround.
I have concerns, but no EE skill to know what may be wrong with this. Total current thru each channel shouldn't exceed 500mA, though.
@moonman Looks like I'm gonna be setting up dev-specific browser profiles then.
@vrsmd argh okay. thanks.
it's pretty #cyberpunk how normal people talk about "The Algorithm" in conversation
if you unionize at work, they fire you.
if your whole team unionizes, they liquidate the company.
so how do you unionize?
tech multiplies the power of labor,
which multiplies the power of the scab.
while the boss fires unionists,
only the bossless can unionize.
@thomasfuchs legit bought my dad one back in the day to go with his 21" CRT set to 1024x768
@art the struggle to survive and maybe make a little money I can put toward projects
<< The average person tends to have either less than eight tabs open, or to add tabs without organization until declaring “tab bankruptcy” and starting fresh. >>
yeah, I'm the... second one
(checks browser; it reports 'new mathematical research needed in order to determine if your number of open tabs is even theoretically countably infinite')
I figure I can stick LED strips to the middle sections there and this would serve both as mounting for the LEDs, plus heat sink.
@graydon that said, my constant concern is that people bolt that weak left critique of free speech onto valid concerns regarding weaponisation, and -- together with the fact that the far right uses free speech as an empty rallying cry -- abandon free expression as a value to centralised control once again. even though it was the early assymetric advantage of cheap speech to silenced and disenfranchised groups that drove IMHO much of the new renaissance of the left in the last decade
@graydon no, I hear you: I disagree with the assessment that the far right have some sort of structural advantage in an era of cheap speech. I don’t think it’s surprising that they would take advantage of it (the primary surprise for me was that it took so long), but I don’t think I could convince you of that in a few short toots. I can only encourage you to investigate how your peers reached the political conclusions they did, and also observe what tools succeed best.
@graydon with my EFF hat more firmly on, one of the levers people reach for in times of fear is to target free expression as a potential choke point to stem a deeper problem.
Previous experience indicates this doesn’t work — and, for most progressive goals, is radically counter-productive. (I’d argue it’s not even that great if you have reactionary goals, but hey, I argue with censoring conservatives every other day).
The Armageddon of Things (AoT) is gonna be SO DOPE
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!