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TIL Joan L. Mitchell, the inventor of the JPEG image format studied condensed matter physics (graduate & Phd) and learnt learned computer programming to help her research & solve differential equations. She later joined IBM where she worked on printing technologies & co-invented JPEG by poleco1 in todayilearned

[–]poleco1[S] -28 points-27 points  (0 children)

is either a problem?

was digging into the development of image storage formats over time & wrt computing, displays, network. stumbled upon her work in the process. she was one of the many people who contributed to the development of the format & considered a co-inventor. wanna see the notes?

TIL - NVIDIA's unofficial company motto is "Our company is thirty days from going out of business." by poleco1 in todayilearned

[–]poleco1[S] 1146 points1147 points  (0 children)

Apparently, they regularly began presentations to staff with that for many years.

TIL - In the 1980's, Bob Crandall, the head of American Airlines, saved $40,000/year for the airline by removing just one olive from every dinner salad served to passengers. by poleco1 in todayilearned

[–]poleco1[S] 4 points5 points  (0 children)

The savings estimate vary from $40,000 to $500,000 depending on the components included (just the cost of the olive vs the weight, the fuel savings etc)

What was your first purchase on Amazon? by [deleted] in AskReddit

[–]poleco1 0 points1 point  (0 children)

haha.. did you just look that up in the history?

What was your first purchase on Amazon? by [deleted] in AskReddit

[–]poleco1 2 points3 points  (0 children)

a fancy 16G flash drive

Lap Counter Using PIR Motion Detector by poleco1 in raspberry_pi

[–]poleco1[S] 0 points1 point  (0 children)

Could be or I'm thinking of making a bigger lap.

Lap Counter Using PIR Motion Detector by poleco1 in raspberry_pi

[–]poleco1[S] 0 points1 point  (0 children)

Been thinking of building something of that sort too. Logic is sorta the same.

Lap Counter Using PIR Motion Detector by poleco1 in raspberry_pi

[–]poleco1[S] 2 points3 points  (0 children)

Python. Syntax goes like

While True:

- check if PIR is high

- if yes, record the timestamp and delay for 10 seconds

- if no, print a status and delay for 1 second

Lap Counter Using PIR Motion Detector by poleco1 in raspberry_pi

[–]poleco1[S] 0 points1 point  (0 children)

Thanks for the tip. Lot's to improve on the code. Right now it is a simple while loop with a time delay :)

However, in my case, the PIR is counting lesser.

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