so, my body doesn’t produce sex hormones on its own (and hasn’t, based on a long history of lab tests); and if I don’t inject synthetic ones myself, I’m super exhausted all the time

(this is probably related to an intersex condition, but I’m super hesitant to apply labels)
CW: consequences of bad politics

the bad political state of the US recently has made me increasingly worried that some of these meds would be less available, as they’re often used for birth control — and for trans care

i *really* don’t want to go back to being eternally tired
CW: consequences of bad politics

the thing is, for a lot of people, going without synthetic hormones is more than just a threat of perpetual tired

for lots of trans folks, this kind of thing can have much more dire consequences; & genuinely cause serious damage to mental health
trans issues aren’t — and have really never been — niche. they affect more people than you know, and it’s all of our responsibility to fight for them
(also, this isn’t to claim there’s anything wrong if people choose to be without either primary sex hormone themselves

it wasn’t great for me, but if it works for others, that’s totally valid!)

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More from @ktemkin

18 Nov
okay; now that we have that remote black-box RE'd; let's cheat a little, and open the remote up! ^_^ Image
The remote's PCB is ultra-simple-- it's literally:

- a single EV1527 control IC
- four buttons
- four diodes
- a crystal
- a switching FET
- an LED
- a PCB antenna

We can guess a lot of this by looking; but it turns out we don't have to-- we can pretty easily grab a schematic!
If we take a moment to look up the part number on the main SO-8 IC, we'll find that it's an EV1527 "OTP Encoder", manufactured by Silvan Chip Electronics.

Looking just a bit further, we can find a short data brief, which happens to contain the schematic for a reference design! Image
Read 13 tweets
17 Nov
Okay, as promised, it's time to live-tweet as I "quickly" reverse the RF protocols associated with this wonderfully-named JOOFOO floor lamp:

amazon.com/JOOFO-Torchier…

The lamp's pretty bright; but it's defining features are accessed via a small remote control.
The remote allows one to adjust the lamp’s brightness and color temperature— and despite having no FCC identifying label, seems to communicate over RF.

At a glance we can guess this slightly dopey looking remote uses a simple modulation in one of the ISM bands. ImageImage
When looking at a device like this, my instinct tends to be to check ~433.92MHz first; lots of these kinds of devices broadcast over little pulse-width modulations up there.

Sure enough, monitoring around 433MHz using gr-fosphor quickly shows us a signal on button presses: Image
Read 16 tweets
5 Sep
a few years ago, at the virtualization company I worked at:

customer: ever since we installed your new GPU driver, excel has been coming up with... wrong answers
me: wait what
customer: here, watch
me: how the *fuck*

bonus points to the first person to guess how that happened
background:
- this was a Windows XP driver (XPDM)
- there was no GPU compute involved
- only excel showed any kind of weirdness at all; everything else was perfect
(I’ll be good and not give feedback on guesses until someone gets it reasonably exactly or a few hours pass. >:])
Read 4 tweets

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