Craig Cheney

Building at the intersection of robotics, manufacturing, and physical AI | MIT PhD | Water polo coach and player

[Craig Cheney @TheCbac]

@i2cjak Although I can be convinced to use a TSSOP in a pinch

[Craig Cheney @TheCbac]

@blind_via Beginners who are just learning PCB layout shouldn’t use ground planes. They should explicitly route return current paths instead

[Craig Cheney @TheCbac]

Something interesting is starting to work

[Craig Cheney @TheCbac]

@i2cjak @blind_via For copper, a current density of 10^7 A/m^2 is a good estimate for steady state, so you can calculate the rough current rating of the via directly from the cross-sectional area

[Craig Cheney @TheCbac]

And since the thickness of the plating is much less than the diameter of the via, current scales roughly linearly with via diameter

[Craig Cheney @TheCbac]

For copper, a current density of 10^7 A/m^2 is a good estimate for steady state, so you can calculate the rough current rating of the via directly from the cross-sectional area

[i2cjak @i2cjak]

what’s the equation for ts? And is via plating thickness independent of copper layer thickness? I imagine it is since it’s a separate plating step. Would be an interesting post to do trade off/break even of larger via vs more via since circumference only grows linearly w/ via diameter

[Craig Cheney @TheCbac]

@JoshuaSteinman Large technical challenges remain in the machine-skin interfaces. It’s shocking hard to apply dynamic forces to tissue without pain or discomfort

[Craig Cheney @TheCbac]

Knowing which issues to tackle is an evergreen problem and one that cannot be vibecoded away

[Kyle🤖🚀🦭 @KyleMorgenstein]

So you can run laps around people who think like this. People who outsource their thinking end up with zero intuition and waste their life chasing the wrong problems.

[Craig Cheney @TheCbac]

Has there ever been an instance in history where opening the help page after pressing F1 has been useful?

[Craig Cheney @TheCbac]

@PatrickHeizer @NathanpmYoung How hard is it to identify the antigen to target?

[Craig Cheney @TheCbac]

@yacineMTB Use a monolithic buck converter with integrated inductor. Almost no parts to spec. For example the MPM3612

[Craig Cheney @TheCbac]

@yacineMTB Because you don’t have models for all of the ICs you’re likely using, so the results are minimally useful

[Craig Cheney @TheCbac]

@willreil What’s the thickness of your stencil?

[Craig Cheney @TheCbac]

@jlcjak Incredibly mid design for a part

[Nick Maselli @NickBuilds11]

The term "Fullstack Engineer" now means "Hardware, Electrical, and Software" capability

[Craig Cheney @TheCbac]

@slut4house Hit up OKAYVAL at the Grand tomorrow

[Craig Cheney @TheCbac]

@curiosityonx Such a stupid take, that’s what the definition of “touch” is

[Craig Cheney @TheCbac]

AI induced psychosis will be a major health issue this year

[Anthony Varrell @V_arrell]

LLM's will cause more psychosis than cannabis.

But that's not a conversation people are ready to have.

[Kyle Vedder @KyleVedder]

"robotics data factory" is such a terrible space to be in

there's a a gajillion overcapitalized players, all desperately sliding into LinkedIn / X DMs asking "how can we provide value?"

my answer: idk, show your value by training policies vs baselines with scientific rigor

[Craig Cheney @TheCbac]

@oprydai Super cool, the frost evaporates on the heat producing shorted capacitor