Tolookah

joined 1 year ago
[–] [email protected] 10 points 5 days ago

If the warnings go under 100, something is wrong.

[–] [email protected] 7 points 1 week ago* (last edited 1 week ago) (1 children)

The charge pump not being stable can mean several things. If it's not where it should be (it won't be) the high side fets won't turn on all the way, causing loads of excess heat inside the chip. This also may never recover, depending on the duty cycle, and then that chip will burn up/let the smoke out.

Essentially, the charge pump capacitor has a set of circuitry that brings the low side of it low, lets it get 5 or 12v, then floats it up to the voltage rail, to turn on the fet hard. If it's only partially on, the fet has a resistance that is too high. (The high side of the capacitor usually has a diode to charge it)

[–] [email protected] 28 points 1 week ago (4 children)

Right now? I'd say first alert smoke alarms. The batch we bought all has failed in an "alarm always, and don't stop" kind of way. They are only two years old, and I'm frustrated.

[–] [email protected] 3 points 1 week ago (1 children)

Digikey carries adafruit stuff, though not likely their whole line. Sparkfun is hobby-ish?

[–] [email protected] 22 points 1 week ago (3 children)

Some meetings dip into negative productivity.

[–] [email protected] 1 points 1 week ago

I wish karma was real.

[–] [email protected] 9 points 2 weeks ago (1 children)

Summon fish!

Or maybe summon food and water? (It's hard to stay dry with a flopping fish around)

Bigby's crushing fish?

[–] [email protected] 4 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Are you sure you replaced the 5v regulator with a pin compatible one?

The tlv75733 is a linear regulator, so if you are giving it more voltage than it was set up for, it will get hot, as it has to soak up the difference.

Does the teensy act the same when powered by USB instead? If not, it's not the tlv.

Edit: the tlv has a thermal shutdown, so the shutdown is a direct result of the overheating.

Follow up edit: https://forum.pjrc.com/index.php?threads/one-component-on-teensy-4-1-gets-very-hot.62255/

[–] [email protected] 14 points 3 weeks ago (2 children)

How much to get into the gold poop futures market?

[–] [email protected] 9 points 3 weeks ago

Ah, "the numbers go down if you stop testing" approach.

That sucks for the kids

[–] [email protected] 35 points 3 weeks ago (5 children)

From my immediate environment? I sit on the toilet, the toilet does not sit on me.

[–] [email protected] 40 points 3 weeks ago (2 children)

It doesn't help that news corps have found that we generally respond to the negative news much more than we do positive news.

view more: next ›