Mean Well has some constant current dimmable 24v power supplies with zero flicker. You'd need 2 if you want each strip to be independently controllable. They also can take a PWM signal if you're so inclined, but I bought them because I prefer flicker-free dimming.
e.g.
https://www.mouser.com/ProductDetail/709-HLG40H-24B
You are unlikely to get amazing dimming performance using constant current with a 24V strip intended for constant voltage operation.
For a bench application like this, get a constant current strip from Bridgelux. They’re cheap and excellent. Digi-key sells them. The “thrive” series is a bit less efficient but has a very nice spectrum. The tiny drivers from Cuvee Systems work well, start quickly, and dim well, but any ordinary LED driver can drive them. Or the bench power supply :)
For 24V tape, here are a few decent choices for drivers:
The Meanwell PWM series. The frequency is below IEEE 1789 recommendations but is okay.
eldoLED LinearDRIVE. The best, but kind of expensive and annoying to use. Program it for a log curve. Here, for example:
Yeah, with a CV strip the Mean Wells with CC dimming have an abrupt shutoff at low brightness - maybe 5% (I haven't measured it), and a brief flash upon increasing brightness just above that threshold. Otherwise they work reasonably well for my use case.
I would also expect some degree of uneven output at lower currents, especially as it ages. But maybe LEDs are more consistently manufactured these days.
You may also experience worse failure modes with the fancier strips that have current limiting ICs instead of resistors.
(Pixel strips can be quite good, too. They seem to mostly have very high PWM frequencies. I assume this is because the electrical behavior is better that way rather than due to any particular care for the pleasantness of using them.)
Mean Well’s power supplies are by far the best I’ve used. Apart from working really well, they also seem to be constructed better than others I’ve used.
My 3d printer, grow lights, hydroponic automation hardware, and a little CNC project are all run on Mean Well power supplies now.
Speaking from quite a bit of experience, content can matter at Gmail if it's very obviously malicious/spammy, but not usually otherwise. Metrics matter more than content at gmail.
For other filters/ISPs, content can matter a bit more, but as a general rule for consumer mailbox providers, metrics are the primary thing that affects filter outcomes.
I deal with email at global scale, and yes, you're a fringe case. There are many billions of messages sent every day which have lots of links, and which recipients in general are interested in, and want delivered to the inbox (or promotions), rather than spam.
You're correct that a lot of senders have no idea when they're sending unwanted email, and that unwanted email is well within the realm of possibility here. But don't assume DOI is a panacea; you can use DOI and still send unwanted email. It can improve quality metrics (fewer bounces), but engagement metrics are a much stronger signal, especially for gmail.
Can you think of a scenario where a well-intentioned organization doesn't realize they're sending some unwanted mail, and by looking at the right metrics they realize they have a problem and take steps to fix it?
Gmail is subject to specific targeting by spammers in a way that fastmail is not. The returns for spending weeks or months finding a niche way through Gmail's filters are justified by the number of gmail addresses that can be targeted, which is probably 3 orders of magnitude larger than the total number of fastmail subscribers.
Table S3 here[1] starting on page 9 appears to show nearly 80 different genuses within stool samples after filtering out "vegetative (non–spore form) bacteria, fungi, parasites, and viruses" [2].
No word on how many strains per genus, but reasonable to assume multiple, if not hundreds in some cases.
On nice! I will save that one and read up on each species. I think it would be useful to know which of those are beneficial and are missing from the 20 I utilize.
It's not quite clear if this is cultivated or not but I know this MD was working on cultivation at one point.
"SER-109 is composed of approximately 50 species of Firmicutes spores derived from stool specimens from healthy donors."
