I thought it was just (or mostly) partial pressure of O2 when it comes to hemoglobin? It’s been about 15 years since I was in school so I might remember wrong.

Does that mean that if we took something rusty and put it in an environment without oxygen it would start to release oxygen from the rust?

I wanted to get into FPGAs when I was making some custom boards with MCUs but I really had a hard time finding a good idea for a starter project with them. How did you get started? Any recommendations?

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This is a great description of nicotine addiction (I’m a vaper, but have smoked). I’d highly recommend anyone who’s considering it to not bother even if you’re impulsive and having a stressful time. Imagine adding another biological need like sleeping to your plate when after a few months all it’ll do for you is allow you to stop thinking about it for a bit. No more buzz. Just cravings and knowing where the exits are.

When I was on the fire department (late 2000s) we bought cars for like $75 each to practice disassembling, I assume from the junkyard. I bet the price hasn’t changed too much.