@johne@denvr.social avatar

johne

@johne@denvr.social

Geek Dad, Software and Electrical Engineer. First of His Generation. Breaker of Tools. Roaster of coffee. Rider of Many Bikes. Neurodivergent. Rage Against the Machine Learning.

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smellsofbikes, to random
@smellsofbikes@mastodon.social avatar

I'm trying to test thermal shutdown on an IC: if it gets hot enough, does its thermal regulation work? It has: an ADC measuring die temp via bandgap, a hardware bandgap that cuts function at a specific temperature, and a write register that you can set a value into so when it exceeds that value it shuts down. The important one, the hardware that should cut the power section, is way off. It hasn't tripped at 200C.
So today I talked to a running chip through liquid solder. That's a first.

johne,
@johne@denvr.social avatar

@smellsofbikes heat gun? thats how i once tried to reproduce field failures of a product that kept letting its smoke out. never could reproduce. The conditions were way over whatever they experienced in the field.

ProPublica, to Illinois
@ProPublica@newsie.social avatar

Ticketed at as a Teen, a Young Black Woman Is Suing an City for Violating Her Civil Rights

It took four years and a jury trial for Amara Harris to beat the ticket that accused her of stealing another girl’s AirPods.

Now she’s heading back to court in the hope of stopping from using to discipline .

https://www.propublica.org/article/illinois-naperville-school-ticketing-amara-harris-civil-rights-lawsuit-airpods

johne,
@johne@denvr.social avatar

@ProPublica racism in suburban Chicago? Only on days that end in Y.

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