i2pi

I added some more context in the title here.

A YouTube machinist goes through how he learned an HDL and got his customer microprocessor taped out and working.

Love this!

(void) space. :P

I was challenged to make a lens for a friend without buying any new optical elements. I have a pile of glass that I've salvaged from old camera lenses that I've modified. I wanted to make a cooke triplet but didn't have any negative elements on hand where I precisely knew their characteristics. I then realized that my eye glasses are relatively well characterized negative lenses, so I had an optometrist cut them into a disc shape and I built the lens around that. It performed very well in my simulations, but not so well in real life. But it was a fun project and my friend ended up with a unique lens for her camera.

Now try 430Hz.

As someone who has just moved back to Australia after ~20 years in the USA, I was surprised to notice how many people reverse park here. It seems to be an ego thing , particularly when I notice how many people do it at the supermarket, where it has to be super inconvenient.

Muscle movements, think talking, chewing, or blinking, generate voltages orders of magnitude higher on the scalp than sources from neural activity inside the skull.